93AA66C-I/SN Microchip Technology, 93AA66C-I/SN Datasheet - Page 8
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93AA66C-I/SN
Manufacturer Part Number
93AA66C-I/SN
Description
IC EEPROM 4KBIT 3MHZ 8SOIC
Manufacturer
Microchip Technology
Specifications of 93AA66C-I/SN
Memory Size
4K (512 x 8 or 256 x 16)
Package / Case
8-SOIC (3.9mm Width)
Operating Temperature
-40°C ~ 85°C
Format - Memory
EEPROMs - Serial
Memory Type
EEPROM
Speed
3MHz
Interface
Microwire, 3-Wire Serial
Voltage - Supply
1.8 V ~ 5.5 V
Organization
256 K x 16 or 512 x 8
Interface Type
2-Wire
Maximum Clock Frequency
1 MHz
Access Time
6 ms
Supply Voltage (max)
5.5 V
Supply Voltage (min)
1.8 V
Maximum Operating Current
2 mA
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Operating Supply Voltage
1.8 V, 5.5 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
93AA66C-I/SN
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
93AA66A/B/C, 93LC66A/B/C, 93C66A/B/C
2.6
The 93XX66A/B/C powers up in the ERASE/WRITE
Disable (EWDS) state. All Programming modes must be
preceded by an ERASE/WRITE Enable (EWEN) instruc-
tion. Once the EWEN instruction is executed, program-
ming remains enabled until an EWDS instruction is
executed or Vcc is removed from the device.
FIGURE 2-5:
FIGURE 2-6:
2.7
The READ instruction outputs the serial data of the
addressed memory location on the DO pin. A dummy
zero bit precedes the 8-bit (If ORG pin is low or A-Version
devices) or 16-bit (If ORG pin is high or B-version
FIGURE 2-7:
DS21795B-page 8
CLK
CLK
CS
DO
CS
DI
CLK
DI
CS
DI
ERASE/WRITE DISABLE And ENABLE (EWDS/EWEN)
READ
HIGH-Z
1
1
1
EWDS TIMING
EWEN TIMING
READ TIMING
1
0
0
0
0
0
An
0
1
•••
0
A0
1
0
Dx
X
X
•••
specified time delay (T
To protect against accidental data disturbance, the
EWDS instruction can be used to disable all ERASE/
WRITE functions and should follow all programming
operations. Execution of a READ instruction is indepen-
dent of both the EWEN and EWDS instructions.
devices) output string. The output data bits will toggle on
the rising edge of the CLK and are stable after the
when CS is held high. The memory data will automati-
cally cycle to the next register and output sequentially.
•••
•••
D0
Dx
X
X
•••
T
T
CSL
CSL
D0
PD
2003 Microchip Technology Inc.
). Sequential read is possible
Dx
•••
D0