Document
93AA66A/B/C, 93LC66A/B/C, 93C66A/B/C
4-Kbit Microwire Compatible Serial EEPROM
Device Selection Table
Part Number VCC Range
93AA66A 93AA66B 93LC66A 93LC66B 93C66A 93C66B 93AA66C 93LC66C 93C66C
1.8V-5.5V 1.8V-5-5V 2.5V-5.5V 2.5V-5.5V 4.5V-5.5V 4.5V-5.5V 1.8V-5.5V 2.5V-5.5V 4.5V-5.5V
ORG Pin
No No No No No No Yes Yes Yes
Word Size
8-bit 16-bit 8-bit 16-bit 8-bit 16-bit 8-bit or 16-bit 8-bit or 16-bit 8-bit or 16-bit
Temperature Ranges
Packages
I
MC, MS, P, SN, OT, MN,ST
I
MC, MS, P, SN, OT, MN,ST
I, E
MC, MS, P, SN, OT, MN,ST
I, E
MC, MS, P, SN, OT, MN,ST
I, E
MC, MS, P, SN, OT, MN,ST
I, E
MC, MS, P, SN, OT, MN,ST
I
MC, MS, P, SN, MN, ST
I, E
MC, MS, P, SN, MN, ST
I, E
MC, MS, P, SN, MN, ST
Features
• Low-Power CMOS Technology • ORG Pin to Select Word Size for ‘66C’ Version • 512 x 8-bit Organization ‘A’ Devices (no ORG) • 256 x 16-bit organization ‘B’ Devices (no ORG) • Self-tImed Erase/Write Cycles (including
Auto-Erase) • Automatic Erase All (ERAL) Before Write All
(WRAL) • Power-On/Off Data Protection Circuitry • Industry Standard Three-Wire Serial I/O • Device Status Signal (Ready/Busy) • Sequential Read Function • High Reliability:
- Endurance: 1,000,000 erase/write cycles - Data retention: > 200 years - ESD protection: > 4000V • RoHS Compliant • Temperature Ranges Supported:
- Industrial (I) -40°C to +85°C - Extended (E) -40°C to +125°C • Automotive AEC-Q100 Qualified
Pin Function Table
Name
Function
CS CLK DI DO VSS NC ORG VCC
Chip Select Serial Data Clock Serial Data Input Serial Data Output Ground No internal connection Memory Configuration Power Supply
Description
The Microchip Technology Inc. 93XX66A/B/C devices are 4-Kbit low-voltage serial Electrically Erasable PROMs (EEPROM). Word-selectable devices such as the 93AA66C, 93LC66C or 93C66C are dependent upon external logic levels driving the ORG pin to set word size. For dedicated 8-bit communication, the 93XX66A devices are available, while the 93XX66B devices provide dedicated 16-bit communication. Advanced CMOS technology makes these devices ideal for low-power, nonvolatile memory applications.
Packages
• 8-Lead DFN, 8-Lead MSOP, 8-Lead PDIP, 8-Lead SOIC, 6-Lead SOT-23, 8-Lead TDFN, 8-Lead TSSOP
2003-2022 Microchip Technology Inc. and its subsidiaries
DS20001795F-page 1
93AA66A/B/C, 93LC66A/B/C, 93C66A/B/C
Package Types (not to scale)
DFN/TDFN
MSOP/TSSOP
PDIP/SOIC
ROTATED SOIC
CS 1
CLK 2 DI 3 DO 4
8 7 6
VCC NC ORG
CS
CLK
(1)
DI DO
1 2 3 4
5 VSS
8 7 6 5
VCC CS
NOCRG(1) CLK
VSS
DI
1 2 3
DO 4
8 VCC NC 1 7 NC VCC 2 6 ORG(1) CS 3
5 VSS CLK 4
8 ORG(1) DO
7 VSS VSS
6 DO
DI
5 DI
SOT-23 16 25 34
VCC CS CLK
Note 1: ORG pin is NC on A/B devices.
DS20001795F-page 2
2003-2022 Microchip Technology Inc. and its subsidiaries
93AA66A/B/C, 93LC66A/B/C, 93C66A/B/C
1.0 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 1-1: DC CHTARACTERISTICS
All parameters apply over the specified ranges unless otherwise noted.
Industrial (I): TA = -40°C to +85°C, VCC = +1.8V to +5.5V Extended (E): TA = -40°C to +125°C, VCC = +2.5V to +5.5V
Param. No.
Symbol
Parameter
Minimum Typical Maximum Units
Conditions
D1
VIH1 VIH2
High-level Input Voltage
2.0 0.7 VCC
— —
VCC +1 VCC +1
V VCC 2.7V V VCC < 2.7V
D2
VIL1
Low-level Input Voltage
-0.3
VIL2
-0.3
—
0.8
V VCC 2.7V
—
0.2 VCC V VCC < .