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What is 93AA66B?

This electronic component, produced by the manufacturer "Microchip Technology", performs the same function as "(93AA66A - 93AA66C) 4K Microwire Compatible Serial EEPROM".


93AA66B Datasheet PDF - Microchip Technology

Part Number 93AA66B
Description (93AA66A - 93AA66C) 4K Microwire Compatible Serial EEPROM
Manufacturers Microchip Technology 
Logo Microchip Technology Logo 


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93AA66A/B/C, 93LC66A/B/C,
93C66A/B/C
4K Microwire Compatible Serial EEPROM
Device Selection Table
Part Number VCC Range
93AA66A
93AA66B
93LC66A
93LC66B
93C66A
93C66B
93AA66C
93LC66C
93C66C
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, MC
P, SN, ST, MS, OT, MC
P, SN, ST, MS, OT, MC
P, SN, ST, MS, OT, MC
P, SN, ST, MS, OT, MC
P, SN, ST, MS, OT, MC
P, SN, ST, MS, MC
P, SN, ST, MS, MC
P, SN, ST, MS, MC
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)
- Automotive (E)
-40°C to +85°C
-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
NC
ORG
No internal connection
Memory Configuration
VCC 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
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.
The entire 93XX Series is available in standard
packages including 8-lead PDIP and SOIC, and
advanced packaging including 8-lead MSOP, 6-lead
SOT-23, 8-lead 2x3 DFN and 8-lead TSSOP. Pb-free
(Pure Matte Sn) finish is available.
© 2005 Microchip Technology Inc.
DS21795C-page 1

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93AA66B equivalent
93AA66A/B/C, 93LC66A/B/C, 93C66A/B/C
FIGURE 1-1:
SYNCHRONOUS DATA TIMING
CS VIH
VIL TCSS TCKH
TCKL
VIH
CLK
TCSH
VIL
TDIS
VIH
DI
TDIH
VIL
DO VOH
TPD
TPD
TCZ
(Read) VOL
DO VOH
(Program) VOL
TSV
Status Valid
TCZ
Note: TSV is relative to CS.
TABLE 1-3: INSTRUCTION SET FOR X 16 ORGANIZATION (93XX66B OR 93XX66C WITH ORG = 1)
Instruction SB Opcode
Address
Data In Data Out Req. CLK Cycles
ERASE
ERAL
EWDS
EWEN
READ
WRITE
WRAL
1 11 A7 A6 A5 A4 A3 A2 A1 A0 — (RDY/BSY)
1 00 1 0 X X X X X X — (RDY/BSY)
1 00 0 0 X X X X X X
High-Z
1 00 1 1 X X X X X X
High-Z
1
10 A7 A6 A5 A4 A3 A2 A1 A0
D15 – D0
1 01 A7 A6 A5 A4 A3 A2 A1 A0 D15 – D0 (RDY/BSY)
1 00 0 1 X X X X X X D15 – D0 (RDY/BSY)
11
11
11
11
27
27
27
TABLE 1-4: INSTRUCTION SET FOR X 8 ORGANIZATION (93XX66A OR 93XX66C WITH ORG = 0)
Instruction SB Opcode
Address
Data In Data Out
Req. CLK
Cycles
ERASE
ERAL
EWDS
EWEN
READ
WRITE
WRAL
1
11 A8 A7 A6 A5 A4 A3 A2 A1 A0 —
(RDY/BSY)
1 00 1 0 X X X X X X X — (RDY/BSY)
1
00 0 0 X X X X X X X
High-Z
1
00 1 1 X X X X X X X
High-Z
1 10 A8 A7 A6 A5 A4 A3 A2 A1 A0 —
D7 – D0
1 01 A8 A7 A6 A5 A4 A3 A2 A1 A0 D7 – D0 (RDY/BSY)
1 00 0 1 X X X X X X X D7 – D0 (RDY/BSY)
12
12
12
12
20
20
20
© 2005 Microchip Technology Inc.
DS21795C-page 5


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Part Details

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