25AA020A_25LC020A| Datasheet

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25AA020A/25LC020A
2K SPI Bus Serial EEPROM
Device Selection Table
Part Number 25AA020A 25LC020A VCC Range 1.8-5.5V 2.5-5.5V Page Size 16 Bytes 16 Bytes Temp. Ranges I I, E Packages P, MS, SN, ST, MC, OT P, MS, SN, ST, MC, OT

Features:
10 MHz max. Clock Frequency Low-Power CMOS Technology: - Max. Write Current: 5 mA at 5.5V, 10 MHz - Read Current: 5 mA at 5.5V, 10 MHz - Standby Current: 5 A at 5.5V 256 x 8-bit Organization Write Page mode (up to 16 bytes) Sequential Read Self-Timed Erase and Write Cycles (5 ms max.) Block Write Protection: - Protect none, 1/4, 1/2 or all of array Built-in Write Protection: - Power-on/off data protection circuitry - Write enable latch - Write-protect pin High Reliability: - Endurance: 1,000,000 Erase/Write cycles - Data retention: >200 years - ESD protection: >4000V Temperature Ranges Supported: - Industrial (I): -40 C to +85 C - Automotive (E): -40 C to +125 C Pb-Free and RoHS Compliant

Description:
The Microchip Technology Inc. 25XX020A* is a 2 Kbit Serial Electrically Erasable Programmable Read-Only Memory (EEPROM). The memory is accessed via a simple Serial Peripheral Interface (SPI) compatible serial bus. The bus signals required are a clock input (SCK) plus separate data in (SI) and data out (SO) lines. Access to the device is controlled through a Chip Select (CS) input. Communication to the device can be paused via the hold pin (HOLD). While the device is paused, transitions on its inputs will be ignored, with the exception of Chip Select, allowing the host to service higher priority interrupts. The 25XX020A is available in standard packages including 8-lead PDIP and SOIC, and advanced packages including 8-lead MSOP, 8-lead TSSOP and rotated TSSOP, 8-lead 2x3 DFN, and 6-lead SOT-23.

Package Types (not to scale)
TSSOP/MSOP
(ST, MS)
CS SO WP VSS 1 2 3 4 8 7 6 5 VCC HOLD SCK SI

PDIP/SOIC
(P, SN)

CS SO WP VSS

1 2 3 4

8 7 6 5

VCC HOLD SCK SI

Pin Function Table
Name CS SO WP VSS SI SCK HOLD VCC Function Chip Select Input Serial Data Output Write-Protect Ground Serial Data Input Serial Clock Input Hold Input Supply Voltage
SCK VSS SI

SOT-23
(OT)
1 2 3 6 5 4 VDD CS SO

DFN
(MC) CS 1 SO 2 WP 3 VSS 4 8 VCC 7 HOLD 6 SCK 5 SI

X-Rotated TSSOP
(X/ST)
HOLD VCC CS SO 1 2 3 4 8 7 6 5 SCK SI VSS WP

*25XX020A is used in this document as a generic part number for the 25AA020A and the 25LC020A.

2007 Microchip Technology Inc.

Preliminary

DS21833D-page 1

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25AA020A_25LC020A DATASHEET