AT27LV256A-15TC

AT27LV256A-15TC Datasheet


• Pin Compatible with JEDEC Standard AT27C256R<br>• Low-power CMOS Operation

Part Datasheet
AT27LV256A-15TC AT27LV256A-15TC AT27LV256A-15TC (pdf)
Related Parts Information
AT27LV256A-12JI AT27LV256A-12JI AT27LV256A-12JI
AT27LV256A-12RI AT27LV256A-12RI AT27LV256A-12RI
AT27LV256A-12RC AT27LV256A-12RC AT27LV256A-12RC
AT27LV256A-15TI AT27LV256A-15TI AT27LV256A-15TI
AT27LV256A-55JI AT27LV256A-55JI AT27LV256A-55JI
AT27LV256A-90JC AT27LV256A-90JC AT27LV256A-90JC
AT27LV256A-90TC AT27LV256A-90TC AT27LV256A-90TC
AT27LV256A-90RI AT27LV256A-90RI AT27LV256A-90RI
AT27LV256A-90RC AT27LV256A-90RC AT27LV256A-90RC
AT27LV256A-15RI AT27LV256A-15RI AT27LV256A-15RI
AT27LV256A-15RC AT27LV256A-15RC AT27LV256A-15RC
AT27LV256A-12JC AT27LV256A-12JC AT27LV256A-12JC
AT27LV256A-15JC AT27LV256A-15JC AT27LV256A-15JC
AT27LV256A-90TI AT27LV256A-90TI AT27LV256A-90TI
AT27LV256A-70TI AT27LV256A-70TI AT27LV256A-70TI
AT27LV256A-70TC AT27LV256A-70TC AT27LV256A-70TC
AT27LV256A-70JI AT27LV256A-70JI AT27LV256A-70JI
AT27LV256A-55TI AT27LV256A-55TI AT27LV256A-55TI
AT27LV256A-55TC AT27LV256A-55TC AT27LV256A-55TC
AT27LV256A-12TI AT27LV256A-12TI AT27LV256A-12TI
AT27LV256A-55RI AT27LV256A-55RI AT27LV256A-55RI
AT27LV256A-12TC AT27LV256A-12TC AT27LV256A-12TC
AT27LV256A-15JI AT27LV256A-15JI AT27LV256A-15JI
AT27LV256A-55RC AT27LV256A-55RC AT27LV256A-55RC
AT27LV256A-70JC AT27LV256A-70JC AT27LV256A-70JC
AT27LV256A-70RC AT27LV256A-70RC AT27LV256A-70RC
AT27LV256A-55JC AT27LV256A-55JC AT27LV256A-55JC
PDF Datasheet Preview
• Fast Read Access Time - 55ns
• Dual Voltage Range Operation

Low-voltage Power Supply Range, 3.0V to 3.6V or Standard 5V ± 10% Supply Range
• Pin Compatible with JEDEC Standard AT27C256R
• Low-power CMOS Operation
20 µA max. less than 1 µA typical Standby for VCC = 3.6V 29 mW max. Active at 5 MHz for VCC = 3.6V
• JEDEC Standard Packages 32-lead PLCC
28-lead 330-mil SOIC
28-lead TSOP
• High-reliability CMOS Technology
2,000V ESD Protection
200 mA Latchup Immunity
• Rapid Programming Algorithm - 100 µs/byte typical
• CMOS and TTL Compatible Inputs and Outputs

JEDEC Standard for LVTTL
• Integrated Product Identification Code
• Commercial and Industrial Temperature Ranges

The AT27LV256A is a high performance, low power, low voltage 262,144-bit one-time programmable read only memory OTP EPROM organized as 32K by 8 bits. It requires only one supply in the range of 3.0V to 3.6V in normal read mode operation,
continued

Pin Configurations

SOIC Top View

Pin Name A0 - A14 O0 - O7 CE OE NC

Function Addresses Outputs Chip Enable Output Enable No Connect

VPP 1 A12 2

A7 3 A6 4 A5 5 A4 6 A3 7 A2 8 A1 9 A0 10 O0 11 O1 12 O2 13 GND 14
28 VCC 27 A14 26 A13 25 A8 24 A9 23 A11 22 OE 21 A10 20 CE 19 O7 18 O6 17 O5 16 O4 15 O3

PLCC Top View

TSOP Top View Type 1
4 A7 3 A12 2 VPP 1 NC 32 VCC 31 A14 30 A13

A6 5 A5 6 A4 7 A3 8 A2 9 A1 10 A0 11 NC 12 O0 13
29 A8 28 A9 27 A11 26 NC 25 OE 24 A10 23 CE 22 O7 21 O6

O1 14 O2 15 GND 16 NC 17 O3 18 O4 19 O5 20

Note PLCC Package Pins 1 and 17 are DON’T CONNECT.

OE 22 A11 23

A9 24 A8 25 A13 26 A14 27 VCC 28 VPP 1 A12 2 A7 3 A6 4 A5 5 A4 6 A3 7
21 A10 20 CE 19 O7 18 O6 17 O5 16 O4 15 O3 14 GND 13 O2 12 O1 11 O0 10 A0
9 A1 8 A2
256K 32K x 8 Low-voltage OTP EPROM AT27LV256A
making it ideal for fast, portable systems using battery power.

Atmel’s innovative design techniques provide fast speeds that rival 5V parts while keeping the low power consumption of a 3.3V supply. At VCC = 3.0V, any byte can be accessed in less than 55 ns. With a typical power dissipation of only 18 mW at 5 MHz and VCC = 3.3V, the AT27LV256A consumes less than one fifth the power of a standard 5V EPROM.

Standby mode supply current is typically less than 1 µA at 3.3V.

The AT27LV256A is available in industry standard JEDECapproved one-time programmable OTP plastic PLCC, SOIC and TSOP packages. All devices feature two-line control CE, OE to give designers the flexibility to prevent bus contention.

The AT27LV256A operating with VCC at 3.0V produces TTL level outputs that are compatible with standard TTL logic devices operating at VCC = 5.0V. The device is also capable of standard 5-volt operation making it ideally suited for dual supply range systems or card products that are pluggable in both 3-volt and 5-volt hosts.

Atmel’s AT27LV256A has additional features to ensure high quality and efficient production use. The Rapid Programming Algorithm reduces the time required to program
the part and guarantees reliable programming. Programming time is typically only 100 µs/byte. The Integrated Product Identification Code electronically identifies the device and manufacturer. This feature is used by industry standard programming equipment to select the proper programming algorithms and voltages. The AT27LV256A programs exactly the same way as a standard 5V AT27C256R and uses the same programming equipment.

System Considerations

Switching between active and standby conditions via the Chip Enable pin may produce transient voltage excursions. Unless accommodated by the system design, these transients may exceed data sheet limits, resulting in device non-conformance. At a minimum, a µF high frequency, low inherent inductance, ceramic capacitor should be utilized for each device. This capacitor should be connected between the VCC and Ground terminals of the device, as close to the device as possible. Additionally, to stabilize the supply voltage level on printed circuit boards with large EPROM arrays, a µF bulk electrolytic capacitor should be utilized, again connected between the VCC and Ground terminals. This capacitor should be positioned as close as possible to the point where the power supply is connected to the array.

Block Diagram

AT27LV256A
Ordering Information
tACC

ICC mA

Active

Standby
Ordering Code

AT27LV256A-55JC AT27LV256A-55RC AT27LV256A-55TC

AT27LV256A-55JI AT27LV256A-55RI AT27LV256A-55TI

AT27LV256A-70JC AT27LV256A-70RC AT27LV256A-70TC

AT27LV256A-70JI AT27LV256A-70RI AT27LV256A-70TI

AT27LV256A-90JC AT27LV256A-90RC AT27LV256A-90TC

AT27LV256A-90JI AT27LV256A-90RI AT27LV256A-90TI

AT27LV256A-12JC AT27LV256A-12RC AT27LV256A-12TC

AT27LV256A-12JI AT27LV256A-12RI AT27LV256A-12TI

AT27LV256A-15JC AT27LV256A-15RC AT27LV256A-15TC

AT27LV256A-15JI AT27LV256A-15RI AT27LV256A-15TI

Package
32J 28R 28T
32J 28R 28T
32J 28R 28T
32J 28R 28T
32J 28R 28T
32J 28R 28T
32J 28R 28T
32J 28R 28T
32J 28R 28T
32J 28R 28T

Operation Range Commercial 0°C to 70°C

Industrial -40°C to 85°C

Commercial 0°C to 70°C

Industrial -40°C to 85°C

Commercial 0°C to 70°C

Industrial -40°C to 85°C

Commercial 0°C to 70°C

Industrial -40°C to 85°C

Commercial 0°C to 70°C

Industrial -40°C to 85°C
32J 28R 28T

Package Type 32-lead, Plastic J-Leaded Chip Carrier PLCC 28-lead, Wide, Plastic Gull Wing Small Outline SOIC 28-lead, Thin Small Outline Package TSOP

AT27LV256A

AT27LV256A

Packaging Information
32J, 32-lead, Plastic J-Leaded Chip Carrier PLCC Dimensions in Inches and Millimeters

JEDEC STANDARD MS-016 AE
28R, 28-lead, Wide, Plastic Gull Wing Small Outline SOIC Dimensions in Inches and Millimeters

X PIN NO. 1 IDENTIFY
More datasheets: AT27LV256A-12JI | AT27LV256A-12RI | AT27LV256A-12RC | AT27LV256A-15TI | AT27LV256A-55JI | AT27LV256A-90JC | AT27LV256A-90TC | AT27LV256A-90RI | AT27LV256A-90RC | AT27LV256A-15RI


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Datasheet ID: AT27LV256A-15TC 518956