2004 Microchip Technology Inc. DS20067J-page 1
93AA46/56/66
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 standb y curre nt 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 org aniza tion (93AA6 6)
• 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
• Seque nti al read function
• 1,000,000 E/W cycles ensured
• Data retention > 20 0 years
• 8-pin PDIP/SOIC
(SOIC in JEDEC and EIAJ standards)
• Temperature ranges supported:
Description:
The Microchip Technology Inc. 93AA46/56/66 are 1K,
2K and 4K low voltage serial Electrically Erasable
PROMs. T he device m emory is confi gured 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
Block Diagram
- Commercial (C): 0°C to +70°C
- Industrial (I): -40°C to +85°C
1
2
3
4
8
7
6
5
CS
CLK
DI
DO
SS
V
NU
ORG
V
CC
1
2
3
4
8
7
6
5
SS
V
NU
ORG
V
CC
CS
LK
DI
DO
1
2
3
4
8
7
6
5
ORG
Vss
DO
DI
NU
Vcc
CS
LK
PDIP
SOIC
SOIC
93AA46
93AA56
93AA66
93AA46
93AA56
93AA66
93AA46X
93AA56X
93AA66X
Memory
Array
Address
Decoder
Address
Counter
Output
Buffer
Data
Register
Mode
Decode
Logic
Clock
Generator
V
CC VSS
DO
DI
ORG
CS
CLK
1K/2K/4K 1.8V Microwire Serial EEPROM
Not recommended for new designs –
Please use 93AA46C, 93AA56C or
93AA66C.
