93AA46A/B/C, 93LC46A/B/C, 93C46A/B/C
93AA56A/B/C, 93LC56A/B/C, 93C56A/B/C
93AA66A/B/C, 93LC66A/B/C, 93C66A/B/C
93AA76A/B/C, 93LC76A/B/C, 93C76A/B/C
93AA86A/B/C, 93LC86A/B/C, 93C86A/B/C
1K-16K Microwire Compatible Serial EEPROMs
Features:
Description:
• Densities from 1 Kbits through 16 Kbits
• Low-power CMOS technology
Microchip Technology Inc. supports the 3-wire
Microwire bus with low-voltage serial Electrically
Erasable PROMs (EEPROM) that range in density
from 1 Kbits up to 16 Kbits. Each density is available
with and without the ORG functionality, and selected by
the part number ordered. Advanced CMOS technology
makes these devices ideal for low power, nonvolatile
memory applications. The entire series of Microwire
devices are available in the standard 8-lead PDIP and
SOIC packages as well as the more advanced packag-
ing such as the 8-lead MSOP, 8-lead TSSOP, 6-lead
SOT-23, and 8-lead DFN (2x3). These packages are all
available in a Pb-free (Matte Tin) finish. Packaging with
the Sn/Pb finish is also available as a custom device.
• Available with or without ORG function:
With ORG function:
- ORG pin at Logic LO: 8-bit word
- ORG pin at Logic HI: 16-bit word
Without ORG function:
- ‘A’ version: 8-bit word
- ‘B’ version: 16-bit word
• Program Enable pin:
- Write-protect for entire array
(93XX76C and 93XX86C only)
• Self-timed Erase/Write cycles
(including auto-erase)
Pin Diagrams (not to scale)
PDIP/SOIC
(P, SN)
ROTATED SOIC
(ex: 93LC46BX)
• Automatic ERAL before WRAL
• Power-on/off data protection circuitry
• Industry standard 3-wire serial I/O
• Device Status signal (Ready/Busy)
• Sequential Read function
(1,3)
V
CC
ORG
1
2
3
4
CS
CLK
DI
8
7
6
5
NC
1
2
3
4
8
7
6
5
(2,3)
VCC
PE
VSS
(1,3)
ORG
CS
DO
DI
• 1,000,000 E/W cycles
DO
CLK
V
SS
• Data retention > 200 years
• Temperature ranges supported:
DFN (MC)
- Industrial (I)
-40°C to +85°C
-40°C to +125°C
CS
V
CC
(2,3)
1
8
- Automotive (E)
PE
7
6
5
CLK
DI
2
3
4
(1,3)
ORG
VSS
DO
Pin Function Table
TSSOP/MSOP
(ST, MS)
Name
Function
SOT-23
(OT)
CS
CLK
DI
Chip Select
8
7
6
5
1
2
3
4
CS
V
CC
1
2
3
6
5
4
V
CC
DO
Serial Data Clock
Serial Data Input
Serial Data Output
Ground
(2,3)
CLK
PE
ORG
VSS
CS
CLK
(1,3)
DI
DI
V
SS
DO
DO
VSS
PE
Note 1: ORG pin: Only on 93XX46C/56C/66C/76C/86C.
2: PE pin: Only on 93XX76C/86C.
Program Enable
Memory Configuration
Power Supply
ORG
VCC
3: ORG/PE: No internal connections on 93XXA/B.
Note:
ORG and PE functionality not available in
all products. See Table 1-1, Device
Selection Table.
Note:
Please visit www.microchip.com/Pbfree for the latest information on Pb-free conversion.
© 2005 Microchip Technology Inc.
DS21929A-page 1