93AA66A Datasheet, PDF (1/24 Pages) Microchip Technology – 4K Microwire Compatible Serial EEPROM

93AA66A/B/C, 93LC66A/B/C,
93C66A/B/C
4K Microwire Compatible Serial EEPROM
Device Selection Table
Part Number
93AA66A
93AA66B
93LC66A
93LC66B
93C66A
93C66B
93AA66C
93LC66C
93C66C
VCC Range
1.8-5.5
1.8-5-5
2.5-5.5
2.5-5.5
4.5-5.5
4.5-5.5
1.8-5.5
2.5-5.5
4.5-5.5
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 or 16-bit
8 or 16-bit
8 or 16-bit
Temp Ranges
I
I
I, E
I, E
I, E
I, E
I
I, E
I, E
Packages
P, SN, ST, MS, OT
P, SN, ST, MS, OT
P, SN, ST, MS, OT
P, SN, ST, MS, OT
P, SN, ST, MS, OT
P, SN, ST, MS, OT
P, SN, ST, MS
P, SN, ST, MS
P, SN, ST, MS
Features
• Low-power CMOS technology
• ORG pin to select word size for ‘66C version
• 512 x 8-bit organization ‘A’ ver. devices (no ORG)
• 256 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 (READY/BUSY)
• Sequential READ function
• 1,000,000 E/W cycles
• Data retention > 200 years
• Temperature ranges supported:
- Industrial (I)
-40°C to +85°C
- Automotive (E)
-40°C to +125°C
Pin Function Table
Name
CS
CLK
DI
DO
VSS
NC
ORG
VCC
Function
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 4K bit 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
93AA66A, 93LC66A or 93C66A devices are available,
while the 93AA66B, 93LC66B and 93C66B devices
provide dedicated 16-bit communication. Advanced
CMOS technology makes these devices ideal for low
power, non-volatile 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)
ROTATED SOIC
(ex: 93LC66BX)
PDIP/SOIC
(P, SN)
NC ₁
VCC 2
CS 3
CLK 4
8 ORG*
7 VSS
6 DO
5 DI
CS 1
CLK 2
DI 3
DO 4
8 VCC
7 NC
6 ORG*
5 VSS
TSSOP/MSOP
(ST, MS)
CS ¹
CLK 2
DI ³
DO ⁴
8 _VCC
7 _NC
6 _ORG*
5 _VSS
* ORG pin is NC on A/B devices
SOT-23
(OT)
DO ¹
VSS ²
DI ³
6 _VCC
5 _CS
4 _CLK
 2003 Microchip Technology Inc.
DS21795B-page 1