2003 Microchip Technology Inc. DS21749D-page 1
93AA46A/B/C, 93LC46A/B/C,
93C46A/B/C
Device Selection Table
Features
• Low-power CMOS technology
• ORG pin to select word size for ‘46C version
• 128 x 8-bit organization ‘A’ ver. devices (no ORG)
• 64 x 16-bit organization ‘B’ ver. devices (no ORG)
• Self-timed ERASE/WRITE cycles (including
auto-erase)
• Automatic ERAL before WRAL
• Power-on/off data protection circuitry
• Industry standard 3-wire serial I/O
• Device Status signal (READ Y/BUSY
)
• Seque nti al REA D functi on
• 1,000,000 E/W cycles
• Data retention > 200 y ears
• Temperature ranges supported
Pin Function Table
Description
The Microchip Technology Inc. 93XX46A/B/C devices
are 1K bit low voltage serial Electrically Erasable
PROMs (EEPROM). Word-selectable devices such as
the 93AA46C, 93LC46C or 93C46C are dependent
upon external logic levels driving the ORG pin to set
word size. For dedicated 8-bit communication, the
93AA46A, 93LC46A or 93C46A devices are available,
while the 93AA46B, 93LC46B and 93C46B devices
provide dedicated 16-bit communication. Advanced
CMOS technology makes these devices ideal for low
power, nonvolatile memory applications. The entire
93XX Series is available in standard packages includ-
ing 8-lead PDIP and SOIC, and advanced packaging
including 8-lead MSOP, 6-lead SOT-23, and 8-lead
TSSOP. Pb-free (Pure Matte Sn) finish is also
available.
Package Types (not to scale)
Part Number VCC Ran ge ORG P in Word S ize Temp Ranges Packages
93AA46A 1.8-5.5 No 8-bit I P, SN, ST, MS, OT
93AA46B 1.8-5-5 No 16-bit I P, SN, ST, MS, OT
93LC46A 2.5-5.5 No 8-bit I, E P, SN, ST, MS, OT
93LC46B 2.5-5.5 No 16-bit I, E P, SN, ST, MS, OT
93C46A 4.5-5.5 No 8-bit I, E P, SN, ST, MS, OT
93C46B 4.5-5.5 No 16-bit I, E P, SN, ST, MS, OT
93AA46C 1.8-5.5
Yes
8 or 16-bit I P, SN, ST, MS
93LC46C 2.5-5.5 Yes 8 or 16-bit I, E
P, SN, ST, MS
93C46C 4.5-5.5 Yes 8 or 16-bit I, E
P, SN, ST, MS
- Industrial (I) -40°C to +85°C
- Automotive (E) -40°C to +125°C
Name Function
CS Chip Select
CLK Serial Data Clock
DI Serial Data Input
DO Serial Data Output
V
SS Ground
NC No internal connection
ORG Memory Configuration
V
CC Pow er Supply
CS
CLK
DI
DO
1
2
3
4
8
7
6
5
V
CC
NC
ORG*
V
SS
PDIP/SOIC
(P, SN)
CS
CLK
DI
DO
1
2
3
4
8
7
6
5
V
CC
NC
ORG*
V
SS
ROTATED SOIC
(ex: 93LC46BX)
TSSOP/MSOP
CS
CLK
DI
DO
1
2
3
4
8
7
6
5
V
CC
NC
ORG*
V
SS
(ST, MS)
SOT-23
DO
V
SS
DI
1
2
3
6
5
4
V
CC
CS
CLK
(OT)
* ORG pin is NC on A/B devices
1K Micr owire Compatible Serial EEPROM
