93C46B
1K 5.0V Microwire® Serial EEPROM
FEATURES
BLOCK DIAGRAM
• 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 ensured
• Data retention > 200 years
• 8-pin PDIP/SOIC and 8-pin TSSOP packages
• Available for the following temperature ranges:
- Commercial (C):
0°C to
+70°C
- Industrial (I):
-40°C to
+85°C
- Automotive (E):
-40°C to +125°C
ADDRESS
DECODER
MEMORY
ARRAY
ADDRESS
COUNTER
DATA
REGISTER
OUTPUT
BUFFER
DO
DI
MEMORY
DECODE
LOGIC
CS
CLK
VCC
VSS
CLOCK
GENERATOR
DESCRIPTION
The Microchip Technology Inc. 93C46B is a 1 Kbit,
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.
PACKAGE TYPE
DIP
1
8
VCC
DI
3
DO
4
7
NC
CLK
6
NC
5
VSS
2
DI
3
DO
4
93C46B
2
93C46B
CLK
8
1
VCC
NC
1
7
NC
VCC
2
NC
CS
3
VSS
CLK
4
6
5
TSSOP
8
93C46BX
CS
SOIC
NC
7
VSS
6
1
2
3
4
8
7
6
5
VCC
NC
NC
VSS
DO
5
CS
CLK
DI
DO
93C46B
CS
SOIC
DI
Microwire is a registered trademark of National Semiconductor Incorporated.
2001 Microchip Technology Inc.
DS21172E-page 1
