AT93C46-W1.8-11 ATMEL [ATMEL Corporation], AT93C46-W1.8-11 Datasheet
AT93C46-W1.8-11
Manufacturer Part Number
AT93C46-W1.8-11
Description
Three-wire Serial EEPROMs
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.AT93C46-W1.8-11.pdf
(21 pages)
Features
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Description
The AT93C46/56/66 provides 1024/2048/4096 bits of serial electrically erasable pro-
grammable read-only memory (EEPROM), organized as 64/128/256 words of 16 bits
each (when the ORG pin is connected to VCC), and 128/256/512 words of 8 bits each
(when the ORG pin is tied to ground). The device is optimized for use in many indus-
trial and commercial applications where low-power and low-voltage operations are
essential. The AT93C46/56/66 is available in space-saving 8-lead PDIP, 8-lead
JEDEC SOIC, 8-lead EIAJ SOIC, 8-lead MAP, 8-lead TSSOP, and 8-lead dBGA2
packages.
The AT93C46/56/66 is enabled through the Chip Select pin (CS) and accessed via a
three-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 DO pin. The Write cycle is completely self-timed,
and no separate Erase cycle is required before Write. The Write cycle is only enabled
when the part 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 of the part.
The AT93C46/56/66 is available in 2.7V to 5.5V and 1.8V to 5.5V versions.
Table 1. Pin Configurations
Pin Name
CS
SK
DI
DO
GND
VCC
ORG
DC
Low-voltage and Standard-voltage Operation
User-selectable Internal Organization
Three-wire Serial Interface
2 MHz Clock Rate (5V)
Self-timed Write Cycle (10 ms max)
High Reliability
Automotive Grade, Extended Temperature and Lead-Free/Halogen-Free
Devices Available
8-lead PDIP, 8-lead JEDEC SOIC, 8-lead EIAJ SOIC, 8-lead MAP, 8-lead TSSOP,
and 8-ball dBGA2 Packages
– 2.7 (V
– 1.8 (V
– 1K: 128 x 8 or 64 x 16
– 2K: 256 x 8 or 128 x 16
– 4K: 512 x 8 or 256 x 16
– Endurance: 1 Million Write Cycles
– Data Retention: 100 Years
CC
CC
= 2.7V to 5.5V)
= 1.8V to 5.5V)
Function
Chip Select
Serial Data Clock
Serial Data Input
Serial Data Output
Ground
Power Supply
Internal Organization
Don’t Connect
DO
CS
SK
DI
ORG
GND
DO
VCC
CS
SK
DI
DC
1
2
3
4
8-lead SOIC
8
7
6
5
8-lead PDIP
8-lead MAP
1
2
3
4
8
7
6
5
8
7
6
5
1
2
3
4
CS
SK
DI
DO
VCC
DC
ORG
GND
VCC
DC
ORG
GND
VCC
DO
CS
SK
DC
CS
SK
DI
ORG
GND
VCC
(1K JEDEC Only)
DC
8-lead TSSOP
1
2
3
4
8-lead dBGA2
8-lead SOIC
1
2
3
4
Rotated (R)
8
7
6
5
1
2
3
4
8
7
6
5
CS
SK
D1
D0
8
7
6
5
ORG
GND
DO
DI
VCC
DC
ORG
GND
Note: 1. This device is not recom-
Three-wire
Serial
EEPROMs
1K (128 x 8 or 64 x 16)
2K (256 x 8 or 128 x 16)
4K (512 x 8 or 256 x 16)
AT93C46
AT93C56
AT93C66
2. This device is not recom-
mended for new designs.
Please refer to AT93C56A.
mended for new designs.
Please refer to AT93C66A.
0172Z–SEEPR–9/05
(1)
(2)
1
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