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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:
• Densities from 1 Kbits through 16 Kbits
• Low-power CMOS technology
• Available with or without ORG function:
With ORG function:
- ORG pin at Logic Low: 8-bit word
- ORG pin at Logic High: 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)
• 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
• 1,000,000 E/W cycles
• Data retention > 200 years
• Pb-free and RoHS compliant
• Temperature ranges supported:
www.DataSheet4U.com
- Industrial (I)
-40°C to +85°C
- Automotive (E)
-40°C to +125°C
Pin Function Table
Name
Function
CS Chip Select
CLK Serial Data Clock
DI Serial Data Input
DO Serial Data Output
VSS Ground
PE Program Enable
ORG Memory Configuration
VCC
Note:
Power Supply
ORG and PE functionality not available in
all products. See Table 1-1, Device
Selection Table.
Description:
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 technol-
ogy makes these devices ideal for low-power, nonvol-
atile 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 packaging such as the 8-lead MSOP, 8-lead
TSSOP, 6-lead SOT-23, and 8-lead DFN (2x3). All
packages are Pb-free.
Pin Diagrams (not to scale)
PDIP/SOIC
(P, SN)
CS 1
CLK 2
DI 3
DO 4
8
7
6
5
ROTATED SOIC
(ex: 93LC46BX)
VCC
NC
(2,3)
PE VCC
(1,3)
ORG CS
1
2
3
(1,3)
8 ORG
7 VSS
6 DO
VSS CLK 4
5 DI
DFN (MC)
CS 1
CLK 2
DI 3
DO 4
8 VCC
7 PE(2,3)
6 ORG(1,3)
5 VSS
TSSOP/MSOP
(ST, MS)
CS
CLK
DI
DO
1
2
3
4
8 VCC
DO
7 PE(2,3)
6 ORG(1,3) VSS
5 VSS
DI
SOT-23
(OT)
16
25
34
VCC
CS
CLK
Note 1: ORG pin: Only on 93XX46C/56C/66C/76C/86C.
2: PE pin: Only on 93XX76C/86C.
3: ORG/PE: No internal connections on 93XXA/B.
© 2007 Microchip Technology Inc.
DS21929D-page 1

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93XX46X/56X/66X/76X/86X
TABLE 1-1: DEVICE SELECTION TABLE
Part Number
Density
(Kbits)
VCC
Range
ORG Pin
Organization
(Words)
PE Pin
Temp
Range
Packages
93XX46A/B/C
93AA46A
1 1.8-5.5 No
128 x 8 bits No I P, SN, ST, MS, OT, MC
93AA46B
1 1.8-5.5 No
64 x 16 bits No I P, SN, ST, MS, OT, MC
93AA46C
1 1.8-5.5 Yes Selectable x8 or x16 No
I P, SN, ST, MS, MC
93LC46A
1 2.5-5.5 No
128 x 8 bits
No I, E P, SN, ST, MS, OT, MC
93LC46B
1 2.5-5.5 No
64 x 16 bits
No I, E P, SN, ST, MS, OT, MC
93LC46C
1 2.5-5.5 Yes Selectable x8 or x16 No
I, E P, SN, ST, MS, MC
93C46A
1 4.5-5.5 No
128 x 8 bits
No I, E P, SN, ST, MS, OT, MC
93C46B
1 4.5-5.5 No
64 x 16 bits
No I, E P, SN, ST, MS, OT, MC
93C46C
1 4.5-5.5 Yes Selectable x8 or x16 No
I, E P, SN, ST, MS, MC
93AA46AX/BX/CX, 93LC46AX/BX/CX, 93C46AX/BX/CX (Alternate pinout with die rotated 90°)
93AA46AX
1 1.8-5.5 No
128 x 8 bits No I P, SN, ST, MS, OT, MC
93AA46BX
1 1.8-5.5 No
64 x 16 bits No I P, SN, ST, MS, OT, MC
93AA46CX
1 1.8-5.5 Yes Selectable x8 or x16 No
I P, SN, ST, MS, MC
93LC46AX
1 2.5-5.5 No
128 x 8 bits
No I, E P, SN, ST, MS, OT, MC
93LC46BX
1 2.5-5.5 No
64 x 16 bits
No I, E P, SN, ST, MS, OT, MC
93LC46CX
1 2.5-5.5 Yes Selectable x8 or x16 No
I, E P, SN, ST, MS, MC
93C46AX
1 4.5-5.5 No
128 x 8 bits
No I, E P, SN, ST, MS, OT, MC
93C46BX
1 4.5-5.5 No
64 x 16 bits
No I, E P, SN, ST, MS, OT, MC
93C46CX
1 4.5-5.5 Yes Selectable x8 or x16 No
I, E P, SN, ST, MS, MC
93XX56A/B/C
93AA56A
2 1.8-5.5 No
256 x 8 bits No I P, SN, ST, MS, OT, MC
93AA56B
2 1.8-5.5 No
128 x 16 bits
No
I P, SN, ST, MS, OT, MC
93AA56C
2 1.8-5.5 Yes Selectable x8 or x16 No
I P, SN, ST, MS, MC
93LC56A
2 2.5-5.5 No
256 x 8 bits
No I, E P, SN, ST, MS, OT, MC
www.DataS9h3eLeCt45U6.Bcom
2 2.5-5.5 No
128 x 16 bits
No I, E P, SN, ST, MS, OT, MC
93LC56C
2 2.5-5.5 Yes Selectable x8 or x16 No
I, E P, SN, ST, MS, MC
93C56A
2 4.5-5.5 No
256 x 8 bits
No I, E P, SN, ST, MS, OT, MC
93C56B
2 4.5-5.5 No
128 x 16 bits
No I, E P, SN, ST, MS, OT, MC
93C56C
2 4.5-5.5 Yes Selectable x8 or x16 No
I, E P, SN, ST, MS, MC
93XX66A/B/C
93AA66A
4 1.8-5.5 No
512 x 8 bits No I P, SN, ST, MS, OT, MC
93AA66B
4 1.8-5.5 No
256 x 16 bits
No
I P, SN, ST, MS, OT, MC
93AA66C
4 1.8-5.5 Yes Selectable x8 or x16 No
I P, SN, ST, MS, MC
93LC66A
4 2.5-5.5 No
512 x 8 bits
No I, E P, SN, ST, MS, OT, MC
93LC66B
4 2.5-5.5 No
256 x 16 bits
No I, E P, SN, ST, MS, OT, MC
93LC66C
4 2.5-5.5 Yes Selectable x8 or x16 No
I, E P, SN, ST, MS, MC
93C66A
4 4.5-5.5 No
512 x 8 bits
No I, E P, SN, ST, MS, OT, MC
93C66B
4 4.5-5.5 No
256 x 16 bits
No I, E P, SN, ST, MS, OT, MC
93C66C
4 4.5-5.5 Yes Selectable x8 or x16 No
I, E P, SN, ST, MS, MC
DS21929D-page 2
© 2007 Microchip Technology Inc.

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93XX46X/56X/66X/76X/86X
TABLE 1-1:
Part Number
93XX76A/B/C
93AA76A
93AA76B
93AA76C
93LC76A
93LC76B
93LC76C
93C76A
93C76B
93C76C
93XX86A/B/C
93AA86A
93AA86B
93AA86C
93LC86A
93LC86B
93LC86C
93C86A
93C86B
93C86C
DEVICE SELECTION TABLE (CONTINUED)
Density
(Kbits)
VCC
Range
ORG Pin
Organization
(Words)
8 1.8-5.5 No
1024 x 8 bits
8 1.8-5.5 No
512 x 16 bits
8 1.8-5.5 Yes Selectable x8 or x16
8 2.5-5.5 No
1024 x 8 bits
8 2.5-5.5 No
512 x 16 bits
8 2.5-5.5 Yes Selectable x8 or x16
8 4.5-5.5 No
1024 x 8 bits
8 4.5-5.5 No
512 x 16 bits
8 4.5-5.5 Yes Selectable x8 or x16
16 1.8-5.5 No
2048 x 8 bits
16 1.8-5.5 No
1024 x 16 bits
16 1.8-5.5 Yes Selectable x8 or x16
16 2.5-5.5 No
2048 x 8 bits
16 2.5-5.5 No
1024 x 16 bits
16 2.5-5.5 Yes Selectable x8 or x16
16 4.5-5.5 No
2048 x 8 bits
16 4.5-5.5 No
1024 x 16 bits
16 4.5-5.5 Yes Selectable x8 or x16
PE Pin
No
No
Yes
No
No
Yes
No
No
Yes
No
No
Yes
No
No
Yes
No
No
Yes
Temp
Range
Packages
I OT
I OT
I P, SN, ST, MS, MC
I, E OT
I, E OT
I, E P, SN, ST, MS, MC
I, E OT
I, E OT
I, E P, SN, ST, MS, MC
I OT
I OT
I P, SN, ST, MS, MC
I, E OT
I, E OT
I, E P, SN, ST, MS, MC
I, E OT
I, E OT
I, E P, SN, ST, MS, MC
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© 2007 Microchip Technology Inc.
DS21929D-page 3