93LC56AB Datasheet, PDF (1/12 Pages) Microchip Technology – 2K 2.5V Microwave Serial EEPROM

M
93LC56A/B
2K 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)
• 256 x 8 bit organization (93LC56A)
• 128 x 16 bit organization (93LC56B)
• 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
ADDRESS
COUNTER
DATA
REGISTER
DI
MODE
DECODE
CS
LOGIC
CLK
CLOCK
GENERATOR
OUTPUT
BUFFER
DO
Vcc
Vss
DESCRIPTION
The Microchip Technology Inc. 93LC56A/B are 2K-bit,
low-voltage serial Electrically Erasable PROMs. The
device memory is configured as x8 (93LC56A) or
x16 bits (93LC56B). Advanced CMOS technology
makes these devices ideal for low power nonvolatile
memory applications. The 93LC56A/B is available in
standard 8-pin DIP, surface mount SOIC, and TSSOP
packages. The 93LC56AX/BX are only offered in a
150-mil SOIC package.
SOIC
TSSOP
CS ₁
CLK 2
DI 3
DO 4
8 Vcc
CS
1
7 NC
CLK
2
6 NC
DI ³
5 Vss
DO
4
8
VCC
NU 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 National Semiconductor.
© 1997 Microchip Technology Inc.
Preliminary
DS21208A-page 1