93AA46 Datasheet, PDF (1/12 Pages) Microchip Technology – 1K/2K/4K 1.8V Microwire Serial EEPROM

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
• 10,000,000 ERASE/WRITE cycles guaranteed on
93AA56 and 93AA66
• 1,000,000 E/W cycles guaranteed on 93AA46
• Data retention > 200 years
• 8-pin PDIP/SOIC
(SOIC in JEDEC and EIAJ standards)
• Temperature ranges supported
- Commercial (C):
0°C to +70°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 non-volatile memory applications. The 93AA
Series is available in standard 8-pin DIP and surface
mount SOIC packages. The rotated pin-out 93AA46X/
56X/66X are offered in the “SN” package only.
PACKAGE TYPES
DIP
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
ADDRESS
DECODER
DI
ORG
CS
CLK
ADDRESS
COUNTER
DATA REGISTER
OUTPUT
BUFFER
DO
MODE
DECODE
LOGIC
CLOCK
GENERATOR
Microwire is a registered trademark of National Semiconductor Incorporated.
© 1996 Microchip Technology Inc.
DS20067G-page 1
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