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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
www.DataSheet4U.com
© 2007 Microchip Technology Inc.
DS21929D-page 3

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93XX46X/56X/66X/76X/86X
2.0 ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings(†)
VCC.............................................................................................................................................................................7.0V
All inputs and outputs w.r.t. VSS ......................................................................................................... -0.6V to VCC +1.0V
Storage temperature ...............................................................................................................................-65°C to +150°C
Ambient temperature with power applied ................................................................................................-40°C to +125°C
ESD protection on all pins ......................................................................................................................................................≥ 4 kV
NOTICE: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the
device. This is a stress rating only and functional operation of the device at those or any other conditions above those
indicated in the operational listings of this specification is not implied. Exposure to maximum rating conditions for
extended periods may affect device reliability.
TABLE 2-1: DC CHARACTERISTICS
All parameters apply over the specified
ranges unless otherwise noted.
VCC = 1.8V to 5.5V
Industrial (I): TA = -40°C to +85°C
Automotive (E): TA = -40°C to +125°C
Param.
No.
Symbol
Parameter
Min. Typ. Max. Units
Conditions
D1 VIH1 High-level input voltage
2.0 — VCC +1 V VCC 2.7V
VIH2
0.7 VCC — VCC +1 V VCC < 2.7V
D2 VIL1 Low-level input voltage
VIL2
-0.3 — 0.8
V VCC 2.7V
-0.3 — 0.2 VCC V VCC < 2.7V
D3 VOL1 Low-level output voltage — — 0.4 V IOL = 2.1 mA, VCC = 4.5V
VOL2
— — 0.2 V IOL = 100 μA, VCC = 2.5V
D4
VOH1 High-level output voltage
2.4
VOH2
VCC-0.2 —
V IOH = -400 μA, VCC = 4.5V
V IOH = -100 μA, VCC = 2.5V
D5 ILI
Input leakage current
— — ±1 μA VIN = VSS to VCC
www.DataSDh6eet4U.coILmO
Output leakage current
— — ±1 μA VOUT = VSS to VCC
D7 CIN, Pin capacitance
COUT (all inputs/outputs)
— — 7 pF VIN/VOUT = 0V (Note 1)
TA = 25°C, FCLK = 1 MHz
D8 ICC write Write current
— — 2 mA FCLK = 3 MHz, VCC = 5.5V
(93XX46X/56X/66X)
— — 3 mA FCLK = 3 MHz, VCC = 5.5V
(93XX76X/86X)
— 500 —
μA FCLK = 2 MHz, VCC = 2.5V
D9 ICC read Read current
D10 ICCS
Standby current
D11 VPOR VCC voltage detect
— — 1 mA FCLK = 3 MHz, VCC = 5.5V
— — 500 μA FCLK = 2 MHz, VCC = 3.0V
— 100 —
μA FCLK = 2 MHz, VCC = 2.5V
— — 1 μA I-Temp (Note 2, 3)
— — 5 μA E-Temp
CLK = Cs = 0V
ORG = DI = VSS or VCC
— 1.5V —
— 3.8V —
V 93AAX6A/B/C, 93LCX6A/B/C,
V 93CX6A/B/C (Note 1)
Note 1: This parameter is periodically sampled and not 100% tested.
2: ORG and PE pins not available on ‘A’ or ‘B’ versions.
3: Ready/Busy status must be cleared from DO, see Section 4.4 “Data Out (DO)”.
DS21929D-page 4
© 2007 Microchip Technology Inc.

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93XX46X/56X/66X/76X/86X
TABLE 2-2: AC CHARACTERISTICS
All parameters apply over the specified
ranges unless otherwise noted.
VCC = 1.8V to 5.5V
Industrial (I): TA = -40°C to +85°C
Automotive (E): TA = -40°C to +125°C
Param.
No.
Symbol
Parameter
Min.
Max. Units
Conditions
A1
FCLK
Clock frequency
— 3 MHz 4.5V VCC < 5.5V
2 MHz 2.5V VCC < 4.5V
1 MHz 1.8V VCC < 2.5V
A2
TCKH
Clock high time
200 — ns 4.5V VCC < 5.5V
250 ns 2.5V VCC < 4.5V
450 ns 1.8V VCC < 2.5V
A3
TCKL
Clock low time
100 — ns 4.5V VCC < 5.5V
200 ns 2.5V VCC < 4.5V
450 ns 1.8V VCC < 2.5V
A4
TCSS
Chip Select setup time
50 — ns 4.5V VCC < 5.5V
100 ns 2.5V VCC < 4.5V
250 ns 1.8V VCC < 2.5V
A5 TCSH Chip Select hold time
0 — ns 1.8V VCC < 5.5V
A6
TCSL
Chip Select low time
250 — ns 1.8V VCC < 5.5V
A7 TDIS Data input setup time
50 — ns 4.5V VCC < 5.5V
100 ns 2.5V VCC < 4.5V
250 ns 1.8V VCC < 2.5V
A8 TDIH Data input hold time
50 — ns 4.5V VCC < 5.5V
100 ns 2.5V VCC < 4.5V
250 ns 1.8V VCC < 2.5V
A9 TPD Data output delay time
— 100 ns 4.5V VCC < 5.5V, CL = 100 pF
(93C76X/86X)
www.DataSheeAt41U0.com TCZ
Data output disable time
— 200 ns 4.5V VCC < 5.5V, CL = 100 pF
250 ns 2.5V VCC < 4.5V, CL = 100 pF
400 ns 1.8V VCC < 2.5V, CL = 100 pF
— 100 ns 4.5V VCC < 5.5V, (Note 1)
200 ns 1.8V VCC < 4.5V, (Note 1)
A11 TSV
Status valid time
— 200 ns 4.5V VCC < 5.5V, CL = 100 pF
300 ns 2.5V VCC < 4.5V, CL = 100 pF
500 ns 1.8V VCC < 2.5V, CL = 100 pF
A12 TWC
Program cycle time
— 5 ms Erase/Write mode
93XX76X/86X
(AA and LC versions)
— 6 ms 93XX46X/56X/66X
(AA and LC versions)
A13 TWC
— 2 ms 93C46X/56X/66X/76X/86X
A14 TEC
Program cycle time
— 6 ms ERAL mode, 4.5V VCC 5.5V
A15 TWL
— 15 ms WRAL mode, 4.5V VCC 5.5V
A16 —
Endurance
1M — cycles 25°C, VCC = 5.0V, (Note 2)
Note 1: This parameter is periodically sampled and not 100% tested.
2: This application is not tested but ensured by characterization. For endurance estimates in a specific
application, please consult the Total Endurance™ Model which may be downloaded from Microchip’s web
site at www.microchip.com.
© 2007 Microchip Technology Inc.
DS21929D-page 5