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93AA46_04 Datasheet, PDF (1/22 Pages) Microchip Technology – 1K/2K/4K 1.8V Microwire Serial EEPROM
Not recommended for new designs –
Please use 93AA46C, 93AA56C or
93AA66C.
93AA46/56/66
1K/2K/4K 1.8V Microwire Serial EEPROM
Features:
• Single supply with programming operation down
to 1.8V
• Low-power CMOS technology:
- 70 µA typical active read current at 1.8V
- 2 µA typical standby current at 1.8V
• ORG pin selectable memory configuration:
- 128 x 8- or 64 x 16-bit organization (93AA46)
- 256 x 8- or 128 x 16-bit organization
(93AA56)
- 512 x 8 or 256 x 16-bit organization (93AA66)
• Self-timed erase and write cycles
(including auto-erase)
• Automatic ERAL before WRAL
• Power on/off data protection circuitry
• Industry standard 3-wire serial I/O
• Device status signal during erase/write cycles
• Sequential read function
• 1,000,000 E/W cycles ensured
• Data retention > 200 years
• 8-pin PDIP/SOIC
(SOIC in JEDEC and EIAJ standards)
• Temperature ranges supported:
- Commercial (C):
0°C to +70°C
- Industrial (I):
-40°C to +85°C
Description:
The Microchip Technology Inc. 93AA46/56/66 are 1K,
2K and 4K low voltage serial Electrically Erasable
PROMs. The device memory is configured as x8 or x16
bits depending on the ORG pin setup. Advanced
CMOS technology makes these devices ideal for low
power nonvolatile memory applications. The 93AA
Series is available in standard 8-pin PDIP and surface
mount SOIC packages. The rotated pin-out 93AA46X/
56X/66X are offered in the “SN” package only.
Package Types
PDIP
CS 1
CLK 2
DI 3
DO 4
SOIC
CS
1
CLK
2
DI
3
DO
4
SOIC
NU
1
Vcc
2
CS
3
CLK
4
8 VCC
7 NU
6 ORG
5 V SS
8
VCC
7
NU
6
ORG
5
V SS
8
ORG
7
Vss
6
DO
5
DI
Block Diagram
VCC VSS
Memory
Array
DI
ORG
CS
CLK
Data
Register
Mode
Decode
Logic
Clock
Generator
Address
Decoder
Address
Counter
Output
Buffer
DO
2004 Microchip Technology Inc.
DS20067J-page 1