AT17LV020-10JI

AT17LV020-10JI Datasheet


The AT17C020 and AT17LV020 high-density AT17 Series FPGA Configuration EEPROMs Configurators provide an easy-to-use, cost-effective configuration memory for Field Programmable Gate Arrays. The AT17 Series is packaged in the popular 20-pin PLCC. The AT17 Series family uses a simple serial-access procedure to configure one or more FPGA devices. The AT17 Series organization supplies enough memory to configure one or multiple smaller FPGAs. The user can select the polarity of the reset function by programming internal EEPROM bytes. These devices also support a system-friendly READY pin, which signifies a “good” power level to the FPGA and can be used to ensure reliable system power-up.

Part Datasheet
AT17LV020-10JI AT17LV020-10JI AT17LV020-10JI (pdf)
Related Parts Information
AT17C020-10JI AT17C020-10JI AT17C020-10JI
AT17LV020-10JC AT17LV020-10JC AT17LV020-10JC
AT17C020-10JC AT17C020-10JC AT17C020-10JC
PDF Datasheet Preview
• EE Reprogrammable 2,097,152 x 1 bit Serial Memories Designed to Store Configuration Programs for Field Programmable Gate Arrays FPGAs
• In-System Programmable via 2-wire Bus
• Simple Interface to SRAM FPGAs
• Compatible with Atmel AT6000, AT40K FPGAs, Altera Devices,

FPGAs, Xilinx XC3000, XC4000, XC5200, FPGAs
• Cascadable Read Back to Support Additional Configurations or

Future Higher-density Arrays
• Low-power CMOS EEPROM Process
• Programmable Reset Polarity
• Available in PLCC Package Pin Compatible across Product Family
• Emulation of Atmel’s AT24CXXX Serial EEPROMs
• Available in 3.3V ± 10% LV and 5V ± 5% C Versions
• System-friendly READY Pin
• Low-power Standby Mode

The AT17C020 and AT17LV020 high-density AT17 Series FPGA Configuration EEPROMs Configurators provide an easy-to-use, cost-effective configuration memory for Field Programmable Gate Arrays. The AT17 Series is packaged in the popular 20-pin PLCC. The AT17 Series family uses a simple serial-access procedure to configure one or more FPGA devices. The AT17 Series organization supplies enough memory to configure one or multiple smaller FPGAs. The user can select the polarity of the reset function by programming internal EEPROM bytes. These devices also support a system-friendly READY pin, which signifies a “good” power level to the FPGA and can be used to ensure reliable system power-up.

The AT17 Series Configurators can be programmed with industry-standard programmers or Atmel’s ATDH2200E Programming System.
2-megabit FPGA Configuration EEPROM Memory

AT17C020 AT17LV020

Pin Configurations

PLCC
3 NC 2 DATA 1 NC 20 VCC 19 NC

CLK 4 NC 5

RESET/OE 6 NC 7 CE 8
18 NC 17 SER_EN 16 NC 15 READY 14 CEO A2

NC 9 GND 10

NC 11 NC 12 NC 13

Block Diagram

CEO A2

FPGA Master Serial Mode Summary

The I/O and logic functions of the FPGA and their associated interconnections are established by a configuration program. The program is loaded either automatically upon power-up, or on command, depending on the state of the FPGA mode pins. In Master Mode, the FPGA automatically loads the configuration program from an external memory. The AT17 Serial Configuration EEPROM has been designed for compatibility with the Master Serial Mode.

This document discusses the AT40K FPGA interface. For more details or AT6K FPGA applications, please reference “AT40K Series Configuration” or “AT6000 Series Configuration” application notes.

Controlling the Highdensity AT17 Series Serial EEPROMs During Configuration

Most connections between the FPGA device and the AT17 Serial EEPROM are simple and self-explanatory
• The DATA output of the AT17 Series Configurator drives DIN of the FPGA devices.
• The master FPGA CCLK output drives the CLK input of the AT17 Series

Configurator.
• The CEO output of any AT17C/LV020 drives the CE input of the next AT17C/LV020
in a cascade chain of EEPROMs.
• SER_EN must be connected to VCC, except during ISP .

The READY pin is available as an open-collector indicator of the device’s RESET status it is driven Low while the device is in its POWER-ON RESET cycle and released tri-stated when the cycle is complete.

There are two different ways to use the inputs CE and OE.
2 AT17C/LV020

AT17C/LV020

Condition 1

Condition 2

Cascading Serial Configuration EEPROMs

AT17 Series Reset Polarity

The simplest connection is to have the FPGA CON pin drive both CE and RESET/OE 1 in parallel. Due to its simplicity, however, this method will fail if the FPGA receives an external reset condition during the configuration cycle. If a system reset is applied to the FPGA, it will abort the original configuration and then reset itself for a new configuration, as intended. Of course, the AT17 Series Configurator does not see the external reset signal and will not reset its internal address counters and, consequently, will remain out of sync with the FPGA for the remainder of the configuration cycle.

Note For this condition, the reset polarity of the EEPROM must be set active High.

Figure Condition 2 Connection

AT40K

RESET

RESET

M2 M1 M0

D<0> CCLK CON
Ordering Information - 5V Devices

Memory Size 2Mb
Ordering Code AT17C020-10JC

AT17C020-10JI
Ordering Information - 3.3V Devices

Memory Size
Ordering Code

AT17LV020-10JC

AT17LV020-10JI

Package 20J

Package 20J

Operation Range Commercial 0°C to 70°C Industrial
-40°C to 85°C

Operation Range Commercial 0°C to 70°C Industrial
-40°C to 85°C

Package Type
20-lead, Plastic J-leaded Chip Carrier PLCC
10 AT17C/LV020

Packaging Information
20J, 20-lead, Plastic J-leaded Chip Carrier PLCC Dimensions in Inches and Millimeters

AT17C/LV020

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More datasheets: AO4488L | AO4488L_101 | AO4488 | CY7C1306CV25-167BZC | ADNK-6033-CC24 | ACT6305UC-T | EA6305UC | AT17C020-10JI | AT17LV020-10JC | AT17C020-10JC


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Datasheet ID: AT17LV020-10JI 518853