ATA8742-PXQW

ATA8742-PXQW Datasheet

ATA8742

Part	Datasheet
ATA8742-PXQW	ATA8742-PXQW (pdf)

Related Parts	Information
ATA8742C-PXQW	ATA8742C-PXQW

PDF Datasheet Preview
ATA8742 Microcontroller with UHF ASK/FSK Transmitter DATASHEET General Features ● Transmitter with microcontroller consisting of an microcontroller and RF transmitter PLL in a single QFN24 5mm x 5mm package pitch 0.65mm ● f0 = 429MHz to 439MHz ● Temperature range to +85°C ● Supply voltage 2.0V to 4.0V allowing usage of single li-cell power supply ● Low power consumption ● Active mode Typical 9.8mA at 3.0V and 4MHz microcontroller-clock ● Power-down mode Typical 200nA at 3.0V ● Modulation scheme ASK/FSK ● Integrated PLL loop filter ● Output power of 7.5dBm at 433.92MHz ● Easy to design-in due to excellent isolation of the PLL from the PA and power supply ● Single-ended antenna output with high efficient power amplifier ● Very robust ESD protection HBM 2500V, MM100V, CDM 1000V ● High performance, low power AVR 8-bit microcontroller, similar to popular ATtiny44 ● Well known and market-accepted RISC architecture ● Non-volatile program and data memories ● 4KBytes of in-system programmable program memory flash ● 256Bytes in-system programmable EEPROM ● 256Bytes internal SRAM ● Programming lock for self-programming flash program and EEPROM data security ● Peripheral features ● Two Timer/Counter, 8- and 16-bit counters with Two PWM channels on both ● 10-bit ADC ● On-chip analog comparator ● Programmable watchdog timer with separate on-chip oscillator ● Universal serial interface USI 9151C-INDCO-09/14 ● Special microcontroller features ● debugWIRE on-chip debug system ● In-system programmable via SPI port ● External and internal interrupt sources ● Pin change interrupt on 12 pins ● Enhanced power-on reset circuit ● Programmable brown-out detection circuit ● Internal calibrated oscillator ● On-chip temperature sensor ● 12 programmable I/O lines ATA8742 [DATASHEET] The ATA8742 is a highly flexible programmable transmitter containing the microcontroller Atmel ATtiny44V and the UHF PLL transmitters a small QFN24 5mm x 5mm package. This device is a member of a transmitter family covering several operating frequency ranges, which has been specifically developed for the demands of RF low-cost data transmission systems with data rates of up to 32kBit/s. Its primary applications are in the areas of industrial/aftermarket remote keyless-entry RKE systems, alarm, telemetering, energy metering systems, home automotion/entertainment and toys. The Atmel ATA8742 can be used in the frequency band of f0 = 433MHz for ASK or FSK data transmission. Figure ASK System Block Diagram UHF ASK/FSK Remote Control Transmitter ATA8742 S1 PXY S1 PXY S1 PXY ATtiny44V VDD VS ATA8402 ATA8405 Power up/down ENABLE GND_RF UHF ASK/FSK Remote Control Receiver ATA8202 ATA8204 Demod Control 1 to 6 Microcontroller VCC_RF VS PA_ENABLE ANT2 ANT1 Antenna Loop Antenna ATA8742 [DATASHEET] Figure FSK System Block Diagram UHF ASK/FSK Remote Control Transmitter ATA8742 S1 PXY S1 PXY S1 PXY ATtiny44V VDD VS ATA8402 ATA8405 Power up/down ENABLE GND_RF As indicated in the ordering information paragraph, the product is available in only one temperature grade, Table Temperature Grade Identification for Automotive Products Temperature +125 Temperature Identifier Z Comments Full automotive temperature range Pin Descriptions VCC Supply voltage. GND Ground. Port B PB3...PB0 Port B is a 4-bit bi-directional I/O port with internal pull-up resistors selected for each bit . The port B output buffers have symmetrical drive characteristics with both high sink and source capability except PB3 which has the RESET capability. To use pin PB3 as an I/O pin, instead of RESET pin, program ‘0’ RSTDISBL fuse. As inputs, Port B pins that are externally pulled low will source current if the pull-up resistors are activated. The port B pins are tri-stated when a reset condition becomes active, even if the clock is not running. Port B also serves the functions of various special features of the Atmel ATtiny24/44/84 as listed on Section “Alternate Port Functions” on page RESET Reset input. A low level on this pin for longer than the minimum pulse length will generate a reset, even if the clock is not running. The minimum pulse length is given in Figure 16-1 on page Shorter pulses are not guaranteed to generate a reset. ATA8742 [DATASHEET] Port A PA7...PA0 Port A is a 8-bit bi-directional I/O port with internal pull-up resistors selected for each bit . The port A output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, port A pins that are externally pulled low will source current if the pull-up resistors are activated. The port A pins are tri-stated when a reset condition becomes active, even if the clock is not running. Port A has an alternate functions as analog inputs for the ADC, analog comparator, Timer/Counter, SPI and pin change interrupt as described in Section “Alternate Port Functions” on page 68 Resources A comprehensive set of development tools, drivers and application notes, and datasheets are available for download on About Code Examples This documentation contains simple code examples that briefly show how to use various parts of the device. These code examples assume that the part specific header file is included before compilation. Be aware that not all C compiler vendors include bit definitions in the header files and interrupt handling in C is compiler dependent. Please confirm with the C compiler documentation for more details. For I/O registers located in extended I/O map, “IN”, “OUT”, “SBIS”, “SBIC”, “CBI”, and “SBI” instructions must be replaced with instructions that allow access to extended I/O. Typically “LDS” and “STS” combined with “SBRS”, “SBRC”, “SBR”, and “CBR”. 20 ATA8742 [DATASHEET] CPU Core Overview This section discusses the core architecture in general. The main function of the CPU core is to ensure correct program execution. The CPU must therefore be able to access memories, perform calculations, control peripherals, and handle interrupts. Architectural Overview Figure Block Diagram of the AVR Architecture Data Bus 8-bit Flash Program Memory Program Counter Instruction Register Instruction Decoder Control Lines Direct Addressing Indirect Addressing Status and Control 32 x 8 General Purpose Registers Data SRAM EEPROM Interrupt Unit The current drawn from capacitive loaded pins may be estimated for one pin as CL x VCC x f where CL = load capacitance, VCC = operating voltage and f = average switching frequency of I/O pin. The parts are characterized at frequencies higher than test limits. Parts are not guaranteed to function properly at frequencies higher than the ordering code indicates. The difference between current consumption in power-down mode with watchdog timer enabled and power-down mode with watchdog timer disabled represents the differential current drawn by the watchdog timer. Active Supply Current Figure Active Supply Current versus Low Frequency to 1.0MHz - Temp. = 25°C 5.5V 5.0V 4.5V ICC mA 3.3V 3.0V 2.7V Frequency MHz ATA8742 [DATASHEET] 183 Figure Active Supply Current versus Low Frequency to 1.0MHz - Temp. = 125°C ICC mA Frequency MHz Figure Active Supply Current versus Frequency 1 to 20MHz - Temp. = 25°C 5.5V 5.0V 4.5V 3.3V 3.0V 2.7V ICC mA 5.5V 5.0V 4.5V 3.3V 3.0V 2.7V Frequency MHz Figure Active Supply Current versus Frequency 1 to 20MHz - Temp. = 125°C ICC mA 5.5V 5.0V 4.5V 3.3V 3.0V 2.7V Frequency MHz 184 ATA8742 [DATASHEET] Figure Active Supply Current versus VCC Internal RC Oscillator, 8MHz ICC mA VCC V Figure Active Supply Current versus VCC Internal RC Oscillator, 1MHz Ordering Information Extended Type Number ATA8742-PXQW-1 Package QFN24 5mm x 5mm Remarks Microcontroller with UHF Tx for 429MHZ to 439MHz, MOQ 6000 Package Information Top View D 24 1 PIN 1 ID Side View technical drawings according to DIN specifications Dimensions in mm Bottom View 18 19 e Z 10:1 COMMON DIMENSIONS Unit of Measure = mm Symbol MIN NOM MAX NOTE Package Drawing Contact: Package VQFN_5x5_24L Exposed pad 3.6x3.6 ATA8742 [DATASHEET] 213 History • Section 35 “Ordering Information” on page 213 updated • Section 36 “Package Information” on page 213 updated • Put datasheet in the latest template 214 ATA8742 [DATASHEET] Atmel Corporation 1600 Technology Drive, San Jose, CA 95110 USA T +1 408 F +1 408 Atmel logo and combinations thereof, Enabling Unlimited AVR and others are registered trademarks or trademarks of Atmel Corporation in U.S. and other countries. Other terms and product names may be trademarks of others. DISCLAIMER The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products. EXCEPT AS SET FORTH IN THE ATMEL TERMS AND CONDITIONS OF SALES LOCATED ON THE ATMEL WEBSITE, ATMEL ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS, IMPLIED OR STATUTORY WARRANTY RELATING TO ITS PRODUCTS INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, CONSEQUENTIAL, PUNITIVE, SPECIAL OR INCIDENTAL DAMAGES INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS AND PROFITS, BUSINESS INTERRUPTION, OR LOSS OF INFORMATION ARISING OUT OF THE USE OR INABILITY TO USE THIS DOCUMENT, EVEN IF ATMEL HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Atmel makes no representations or warranties with respect to the accuracy or completeness of the contents of this document and reserves the right to make changes to specifications and products descriptions at any time without notice. Atmel does not make any commitment to update the information contained herein. Unless specifically provided otherwise, Atmel products are not suitable for, and shall not be used in, automotive applications. Atmel products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life. SAFETY-CRITICAL, MILITARY, AND AUTOMOTIVE APPLICATIONS DISCLAIMER Atmel products are not designed for and will not be used in connection with any applications where the failure of such products would reasonably be expected to result in significant personal injury or death “Safety-Critical Applications” without an Atmel officer's specific written consent. Safety-Critical Applications include, without limitation, life support devices and systems, equipment or systems for the operation of nuclear facilities and weapons systems. Atmel products are not designed nor intended for use in military or aerospace applications or environments unless specifically designated by Atmel as military-grade. Atmel products are not designed nor intended for use in automotive applications unless specifically designated by Atmel as automotive-grade.

PDF Datasheet Preview

ATA8742

Microcontroller with UHF ASK/FSK Transmitter

DATASHEET

General Features
● Transmitter with microcontroller consisting of an microcontroller and RF transmitter PLL in a single QFN24 5mm x 5mm package pitch 0.65mm ● f0 = 429MHz to 439MHz
● Temperature range to +85°C ● Supply voltage 2.0V to 4.0V allowing usage of single li-cell power supply ● Low power consumption
● Active mode Typical 9.8mA at 3.0V and 4MHz microcontroller-clock ● Power-down mode Typical 200nA at 3.0V ● Modulation scheme ASK/FSK ● Integrated PLL loop filter ● Output power of 7.5dBm at 433.92MHz ● Easy to design-in due to excellent isolation of the PLL from the PA and power supply ● Single-ended antenna output with high efficient power amplifier ● Very robust ESD protection HBM 2500V, MM100V, CDM 1000V ● High performance, low power AVR 8-bit microcontroller, similar to popular ATtiny44 ● Well known and market-accepted RISC architecture ● Non-volatile program and data memories ● 4KBytes of in-system programmable program memory flash ● 256Bytes in-system programmable EEPROM ● 256Bytes internal SRAM ● Programming lock for self-programming flash program and EEPROM data security ● Peripheral features ● Two Timer/Counter, 8- and 16-bit counters with Two PWM channels on both ● 10-bit ADC ● On-chip analog comparator ● Programmable watchdog timer with separate on-chip oscillator ● Universal serial interface USI
9151C-INDCO-09/14
● Special microcontroller features
● debugWIRE on-chip debug system ● In-system programmable via SPI port ● External and internal interrupt sources ● Pin change interrupt on 12 pins ● Enhanced power-on reset circuit ● Programmable brown-out detection circuit ● Internal calibrated oscillator ● On-chip temperature sensor ● 12 programmable I/O lines

ATA8742 [DATASHEET]

The ATA8742 is a highly flexible programmable transmitter containing the microcontroller Atmel ATtiny44V and the UHF PLL transmitters a small QFN24 5mm x 5mm package. This device is a member of a transmitter family covering several operating frequency ranges, which has been specifically developed for the demands of RF low-cost data transmission systems with data rates of up to 32kBit/s. Its primary applications are in the areas of industrial/aftermarket remote keyless-entry RKE systems, alarm, telemetering, energy metering systems, home automotion/entertainment and toys. The Atmel ATA8742 can be used in the frequency band of f0 = 433MHz for ASK or FSK data transmission.

Figure ASK System Block Diagram

UHF ASK/FSK Remote Control Transmitter

ATA8742

S1 PXY S1 PXY S1 PXY

ATtiny44V

VDD VS

ATA8402 ATA8405

Power up/down

ENABLE GND_RF

UHF ASK/FSK Remote Control Receiver

ATA8202 ATA8204

Demod

Control
1 to 6 Microcontroller

VCC_RF VS

PA_ENABLE ANT2

ANT1

Antenna

Loop Antenna

ATA8742 [DATASHEET]

Figure FSK System Block Diagram

UHF ASK/FSK Remote Control Transmitter

ATA8742

S1 PXY S1 PXY S1 PXY

ATtiny44V

VDD VS

ATA8402 ATA8405

Power up/down

ENABLE GND_RF
As indicated in the ordering information paragraph, the product is available in only one temperature grade,

Table Temperature Grade Identification for Automotive Products

Temperature +125

Temperature Identifier Z

Comments Full automotive temperature range

Pin Descriptions

VCC Supply voltage.

GND Ground.

Port B PB3...PB0

Port B is a 4-bit bi-directional I/O port with internal pull-up resistors selected for each bit . The port B output buffers have symmetrical drive characteristics with both high sink and source capability except PB3 which has the RESET capability.

To use pin PB3 as an I/O pin, instead of RESET pin, program ‘0’ RSTDISBL fuse. As inputs, Port B pins that are externally pulled low will source current if the pull-up resistors are activated. The port B pins are tri-stated when a reset condition becomes active, even if the clock is not running.

Port B also serves the functions of various special features of the Atmel ATtiny24/44/84 as listed on Section “Alternate Port Functions” on page

RESET

Reset input. A low level on this pin for longer than the minimum pulse length will generate a reset, even if the clock is not running. The minimum pulse length is given in Figure 16-1 on page Shorter pulses are not guaranteed to generate a reset.

ATA8742 [DATASHEET]

Port A PA7...PA0

Port A is a 8-bit bi-directional I/O port with internal pull-up resistors selected for each bit . The port A output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, port A pins that are externally pulled low will source current if the pull-up resistors are activated. The port A pins are tri-stated when a reset condition becomes active, even if the clock is not running.

Port A has an alternate functions as analog inputs for the ADC, analog comparator, Timer/Counter, SPI and pin change interrupt as described in Section “Alternate Port Functions” on page 68

Resources

A comprehensive set of development tools, drivers and application notes, and datasheets are available for download on

About Code Examples

This documentation contains simple code examples that briefly show how to use various parts of the device. These code examples assume that the part specific header file is included before compilation. Be aware that not all C compiler vendors include bit definitions in the header files and interrupt handling in C is compiler dependent. Please confirm with the C compiler documentation for more details.

For I/O registers located in extended I/O map, “IN”, “OUT”, “SBIS”, “SBIC”, “CBI”, and “SBI” instructions must be replaced with instructions that allow access to extended I/O. Typically “LDS” and “STS” combined with “SBRS”, “SBRC”, “SBR”, and “CBR”.
20 ATA8742 [DATASHEET]

CPU Core

Overview

This section discusses the core architecture in general. The main function of the CPU core is to ensure correct program execution. The CPU must therefore be able to access memories, perform calculations, control peripherals, and handle interrupts.

Architectural Overview

Figure Block Diagram of the AVR Architecture

Data Bus 8-bit

Flash Program Memory

Program Counter

Instruction Register

Instruction Decoder

Control Lines

Direct Addressing Indirect Addressing

Status and Control
32 x 8 General Purpose Registers

Data SRAM

EEPROM

Interrupt Unit
The current drawn from capacitive loaded pins may be estimated for one pin as CL x VCC x f where CL = load capacitance, VCC = operating voltage and f = average switching frequency of I/O pin. The parts are characterized at frequencies higher than test limits. Parts are not guaranteed to function properly at frequencies higher than the ordering code indicates.

The difference between current consumption in power-down mode with watchdog timer enabled and power-down mode with watchdog timer disabled represents the differential current drawn by the watchdog timer.

Active Supply Current

Figure Active Supply Current versus Low Frequency to 1.0MHz - Temp. = 25°C
5.5V
5.0V
4.5V

ICC mA
3.3V
3.0V
2.7V

Frequency MHz

ATA8742 [DATASHEET] 183

Figure Active Supply Current versus Low Frequency to 1.0MHz - Temp. = 125°C

ICC mA

Frequency MHz

Figure Active Supply Current versus Frequency 1 to 20MHz - Temp. = 25°C
5.5V 5.0V 4.5V
3.3V 3.0V 2.7V

ICC mA
5.5V
5.0V
4.5V
3.3V
3.0V
2.7V

Frequency MHz

Figure Active Supply Current versus Frequency 1 to 20MHz - Temp. = 125°C

ICC mA
5.5V
5.0V
4.5V
3.3V
3.0V
2.7V

Frequency MHz
184 ATA8742 [DATASHEET]

Figure Active Supply Current versus VCC Internal RC Oscillator, 8MHz

ICC mA

VCC V

Figure Active Supply Current versus VCC Internal RC Oscillator, 1MHz
Ordering Information

Extended Type Number ATA8742-PXQW-1

Package QFN24 5mm x 5mm

Remarks Microcontroller with UHF Tx for 429MHZ to 439MHz, MOQ 6000

Package Information

Top View D
24 1 PIN 1 ID

Side View
technical drawings according to DIN specifications

Dimensions in mm

Bottom View
18 19 e

Z 10:1

COMMON DIMENSIONS

Unit of Measure = mm

Symbol MIN NOM MAX NOTE

Package Drawing Contact:

Package VQFN_5x5_24L Exposed pad 3.6x3.6

ATA8742 [DATASHEET] 213
History
• Section 35 “Ordering Information” on page 213 updated
• Section 36 “Package Information” on page 213 updated
• Put datasheet in the latest template
214 ATA8742 [DATASHEET]

Atmel Corporation
1600 Technology Drive, San Jose, CA 95110 USA

T +1 408

F +1 408

Atmel logo and combinations thereof, Enabling Unlimited AVR and others are registered trademarks or trademarks of Atmel Corporation in U.S. and other countries. Other terms and product names may be trademarks of others.

DISCLAIMER The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products. EXCEPT AS SET FORTH IN THE ATMEL TERMS AND CONDITIONS OF SALES LOCATED ON THE ATMEL WEBSITE, ATMEL ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS, IMPLIED OR STATUTORY WARRANTY RELATING TO ITS PRODUCTS INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, CONSEQUENTIAL, PUNITIVE, SPECIAL OR INCIDENTAL DAMAGES INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS AND PROFITS, BUSINESS INTERRUPTION, OR LOSS OF INFORMATION ARISING OUT OF THE USE OR INABILITY TO USE THIS DOCUMENT, EVEN IF ATMEL HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Atmel makes no representations or warranties with respect to the accuracy or completeness of the contents of this document and reserves the right to make changes to specifications and products descriptions at any time without notice. Atmel does not make any commitment to update the information contained herein. Unless specifically provided otherwise, Atmel products are not suitable for, and shall not be used in, automotive applications. Atmel products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life.

SAFETY-CRITICAL, MILITARY, AND AUTOMOTIVE APPLICATIONS DISCLAIMER Atmel products are not designed for and will not be used in connection with any applications where the failure of such products would reasonably be expected to result in significant personal injury or death “Safety-Critical Applications” without an Atmel officer's specific written consent. Safety-Critical Applications include, without limitation, life support devices and systems, equipment or systems for the operation of nuclear facilities and weapons systems. Atmel products are not designed nor intended for use in military or aerospace applications or environments unless specifically designated by Atmel as military-grade. Atmel products are not designed nor intended for use in automotive applications unless specifically designated by Atmel as automotive-grade.

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived ATA8742-PXQW Datasheet file may be downloaded here without warranties.

Datasheet ID: ATA8742-PXQW 519237