93C46B Datasheet, PDF (1/12 Pages) Microchip Technology – 1K 5.0V Microwire Serial EEPROM

M
93C46B
1K 5.0V Microwire^® Serial EEPROM
FEATURES
• Single supply 5.0V operation
• Low power CMOS technology
- 1 mA active current (typical)
- 1 µA standby current (maximum)
• 64 x 16 bit organization
• 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):
- Automotive (E):
0°C to +70°C
-40°C to +85°C
-40°C to +125°C
PACKAGE TYPE
DIP
SOIC
BLOCK DIAGRAM
MEMORY
ARRAY
ADDRESS
DECODER
ADDRESS
COUNTER
DATA
REGISTER
DI
MEMORY
DECODE
CS
LOGIC
CLK
CLOCK
GENERATOR
OUTPUT
BUFFER
DO
VCC
VSS
DESCRIPTION
The Microchip Technology Inc. 93C46B is a 1K-bit,
low-voltage serial Electrically Erasable PROM. The
device memory is configured as 64 x 16 bits. Advanced
CMOS technology makes this device ideal for
low-power, nonvolatile memory applications. The
93C46B is available in standard 8-pin DIP, surface
mount SOIC, and TSSOP packages. The 93C46BX 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 Incorporated.
© 1997 Microchip Technology Inc.
Preliminary
DS21172D-page 1