AT93C46D
3-wire Automotive Temperature Serial EEPROMs
1K (128 x 8 or 64 x 16)
DATASHEET
Features
Medium-voltage and Standard-voltage Operation
̶
̶
2.5 (V
CC
= 2.5V to 5.5V)
1K: 128 x 8 or 64 x 16
User-selectable Internal Organization
3-wire Serial Interface
2MHz Clock Rate (5V)
Self-timed Write Cycle (10ms max)
High Reliability
̶
̶
Endurance: 1,000,000 Write Cycles
Data Retention: 100 Years
8-lead JEDEC SOIC and TSSOP Packages
Description
The AT93C46D provides 1,024 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 V
CC
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 AT93C46D is available
in space-saving 8-lead TSSOP and 8-lead JEDEC SOIC packages. The
AT93C46D 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.
Atmel-8674C-SEEPROM-AT93C46D-Automotive-Datasheet_102014
MICROCHIP [ MICROCHIP TECHNOLOGY ]
