M
FEATURES
93C46B
BLOCK DIAGRAM
MEMORY
ARRAY
ADDRESS
DECODER
1K 5.0V Microwire
®
Serial EEPROM
• Single supply 5.0V operation
• Low power CMOS technology
- 1 mA active current (typical)
- 1
µ
A 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):
0
°
C to
+70
°
C
- Industrial (I):
-40
°
C to
+85
°
C
- Automotive (E):
-40
°
C to +125
°
C
ADDRESS
COUNTER
DATA
REGISTER
DI
MEMORY
DECODE
LOGIC
CLOCK
GENERATOR
V
CC
V
SS
OUTPUT
BUFFER
DO
CS
CLK
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.
PACKAGE TYPE
DIP
CS
CLK
DI
DO
1
8
V
CC
CS
NC
CLK
6
5
NC
V
SS
DO
DI
SOIC
SOIC
CS
CLK
DI
DO
1
2
3
4
TSSOP
8
7
6
5
V
CC
NC
NC
V
SS
93C46B
1
8
V
CC
NC
NC
V
SS
NU
V
CC
CS
CLK
1
8
NC
V
SS
DO
DI
93C46BX
93C46B
93C46B
2
3
4
7
2
3
4
7
6
5
2
3
4
7
6
5
Microwire is a registered trademark of National Semiconductor Incorporated.
©
1997 Microchip Technology Inc.
Preliminary
DS21172D-page 1
MICROCHIP [ MICROCHIP TECHNOLOGY ]
