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Microchip Technology - 2K/4K 2.5V Microwire Serial EEPROM with Software Write Protect

Numéro de référence 93LCS66-SL
Description 2K/4K 2.5V Microwire Serial EEPROM with Software Write Protect
Fabricant Microchip Technology 
Logo Microchip Technology 





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93LCS66-SL fiche technique
93LC66A/B
4K 2.5V Microwire® Serial EEPROM
FEATURES
• Single supply with operation down to 2.5V
• Low power CMOS technology
- 1 mA active current (typical)
- 1 µA standby current (maximum)
• 512 x 8 bit organization (93LC66A)
• 256 x 16 bit organization (93LC66B)
• Self-timed ERASE and WRITE cycles
(including auto-erase)
• Automatic ERAL before WRAL
• Power on/off data protection circuitry
• Industry standard 3-wire serial interface
• Device status signal during ERASE/WRITE cycles
• Sequential READ function
• 1,000,000 E/W cycles guaranteed
• Data retention > 200 years
• 8-pin PDIP/SOIC and 8-pin TSSOP packages
• Available for the following temperature ranges:
- Commercial (C):
- Industrial (I):
0°C to +70°C
-40°C to +85°C
PACKAGE TYPE
DIP
SOIC
BLOCK DIAGRAM
MEMORY
ARRAY
ADDRESS
DECODER
DI
CS
CLK
DATA
REGISTER
ADDRESS
COUNTER
OUTPUT
BUFFER
DO
MODE
DECODE
LOGIC
CLOCK
GENERATOR
Vcc
Vss
DESCRIPTION
The Microchip Technology Inc. 93LC66A/B are 4K-bit,
low voltage serial Electrically Erasable PROMs. The
device memory is configured as x8 (93LC66A) or
x16 bits (93LC66B). Advanced CMOS technology
makes these devices ideal for low power nonvolatile
memory applications. The 93LC66A/B is available in
standard 8-pin DIP, surface mount SOIC, and TSSOP
packages. The 93LC66AX/BX are only offered in a
150-mil SOIC package.
SOIC
TSSOP
CS 1
CLK 2
DI 3
DO 4
8 Vcc
CS
7 NC
CLK
6 NC
DI
5 Vss
DO
1
2
3
4
8 VCC
NC 1
7 NC
Vcc 2
6 NC
CS 3
5 Vss CLK 4
CS 1
8 NC CLK 2
DI 3
7 Vss
DO 4
6 DO
5 DI
8 Vcc
7 NC
6 NC
5 Vss
Microwire is a registered trademark of Motorola.
1998 Microchip Technology Inc.
DS21209C-page 1

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