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AT24C64A

ATMEL
Part Number AT24C64A
Manufacturer ATMEL
Description Two-wire Serial EEPROM
Published Nov 14, 2016
Detailed Description Features • Standard-Voltage Operation – 2.7 (VCC = 2.7V to 5.5V) • Internally Organized 4096 x 8 (32K), 8192 x 8 (64K) •...
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AT24C64A
AT24C64A

Overview
Features • Standard-Voltage Operation – 2.
7 (VCC = 2.
7V to 5.
5V) • Internally Organized 4096 x 8 (32K), 8192 x 8 (64K) • Automotive Temperature Range –40C to +125C • Two-wire Serial Interface • Schmitt Trigger, Filtered Inputs for Noise Suppression • Bidirectional Data Transfer Protocol • 400 kHz Clock Rate • Write Protect Pin for Hardware Data Protection • 32-byte Page Write Mode (Partial Page Writes Allowed) • Self-timed Write Cycle (5 ms Max) • High Reliability – Endurance: 1 Million Write Cycles – Data Retention: 100 Years • Lead-free/Halogen-free Devices Available • 8-lead JEDEC SOIC and 8-lead TSSOP Packages Description The AT24C32A/64A provides 32,768/65,536 bits of serial electrically erasable and programmable read only memory (EEPROM) organized as 4096/8192 words of 8 bits each.
The device’s cascadable feature allows up to 8 devices to share a common twowire bus.
The device is optimized for use in many automotive applications where low power and low voltage operation are essential.
The AT24C32A/64A is available in space saving 8-lead JEDEC SOIC and 8-lead TSSOP packages and is accessed via a 2-wire serial interface and is available in a 2.
7V (2.
7V to 5.
5V) version.
Table 1.
Pin Configuration Pin Name Function A0 – A2 Address Inputs SDA Serial Data SCL Serial Clock Input WP Write Protect 8-lead SOIC A0 1 A1 2 A2 3 GND 4 8 VCC 7 WP 6 SCL 5 SDA 8-lead TSSOP A0 1 A1 2 A2 3 GND 4 8 VCC 7 WP 6 SCL 5 SDA Two-wire Automotive Serial EEPROM 32K (4096 x 8) 64K (8192 x 8) AT24C32A(1) AT24C64A 1.
AT24C32A not recommended for new design; replaced by AT24C32D Automotive.
2.
AT24C64A not recommended for new design; replaced by AT24C64D Automotive.
5120D–SEEPR–6/08 Absolute Maximum Ratings* Operating Temperature .
.
–55C to +125C Storage Temperature.
–65C to +150C Voltage on Any Pin with Respect to Ground .
–1.
0V to +7.
0V Maximum Operating Voltage .
.
.
.
...


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