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AT93C46

ATMEL Corporation
Part Number AT93C46
Manufacturer ATMEL Corporation
Description 3-Wire Serial EEPROMs
Published Mar 23, 2005
Detailed Description 1. Features • Medium-voltage and Standard-voltage Operation – 2.7 (VCC = 2.7V to 5.5V) • User-selectable Internal Organi...
Datasheet PDF File AT93C46 PDF File

AT93C46
AT93C46


Overview
1.
Features • Medium-voltage and Standard-voltage Operation – 2.
7 (VCC = 2.
7V to 5.
5V) • User-selectable Internal Organization – 1K: 128 x 8 or 64 x 16 • Three-wire Serial Interface • 2 MHz Clock Rate (5V) • Self-timed Write Cycle (10 ms max) • High Reliability – Endurance: 1 Million Write Cycles – Data Retention: 100 Years • 8-lead TSSOP and 8-lead JEDEC SOIC Packages 2.
Description The AT93C46 provides 1024 bits of serial electrically erasable programmable read only memory (EEPROM) organized as 64 words of 16 bits each, when the ORG pin is connected to VCC and 128 words of 8 bits each when it is tied to ground.
The device is optimized for use in many automotive applications where low power and low voltage operations are essential.
The AT93C46 is available in space-saving 8-lead TSSOP and 8-lead JEDEC SOIC packages.
The AT93C46 is enabled through the Chip Select pin (CS), and accessed via a 3-wire serial interface consisting of Data Input (DI), Data Output (DO), and Shift Clock (SK).
Upon receiving a Read instruction at DI, the address is decoded and the data is clocked out serially on the data output pin DO.
The WRITE cycle is completely self-timed and no separate erase cycle is required before write.
The Write cycle is only enabled when it is in the Erase/Write Enable state.
When CS is brought “high” following the initiation of a write cycle, the DO pin outputs the Ready/Busy status.
Table 2-1.
Pin Name CS SK DI DO GND VCC ORG Pin Configuration Function Chip Select Serial Data Clock Serial Data Input Serial Data Output Ground Power Supply Internal Organization 8-lead SOIC CS 1 SK 2 DI 3 DO 4 8 VCC 7 DC 6 ORG 5 GND 8-lead TSSOP CS 1 SK 2 DI 3 DO 4 8 VCC 7 DC 6 ORG 5 GND Three-wire Automotive Temperature Serial EEPROMs 1K (128 x 8 or 64 x 16) AT93C46 Rev.
5125C–SEEPR–11/07 3.
Absolute Maximum Ratings* Operating Temperature.
.
.
−55°C to +125°C Storage Temperature .
−65°C to +150°C Vo...


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