93AA76C-I/ST Microchip Technology, 93AA76C-I/ST Datasheet - Page 7

• Manufacturer Part Number: 93AA76C-I/ST
• Description: IC EEPROM 8KBIT 3MHZ 8TSSOP
• Manufacturer: Microchip Technology

Specifications of 93AA76C-I/ST

• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Memory Size: 8K (1K x 8 or 512 x 16)
• Speed: 3MHz
• Interface: Microwire, 3-Wire Serial
• Voltage - Supply: 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-TSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2.6
The 93XX76A/B/C powers up in the Erase/Write
Disable (EWDS) state. All programming modes must be
preceded by an Erase/Write Enable (EWEN) instruction.
FIGURE 2-3:
FIGURE 2-4:
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
devices) output string.
FIGURE 2-5:
© 2008 Microchip Technology Inc.
CLK
CLK
CS
DO
CS
DI
CLK
DI
CS
DI
Erase/Write Disable and Enable
(EWDS/EWEN)
Read
93AA76A/B/C, 93LC76A/B/C, 93C76A/B/C
High-Z
1
1
1
EWDS TIMING
EWEN TIMING
READ TIMING
1
0
0
0
0
0
A
N
0
1
•••
0
A0
1
0
Dx
x
x
•••
Once the EWEN instruction is executed, programming
remains enabled until an EWDS instruction is executed
or V
To protect against accidental data disturbance, the
EWDS instruction can be used to disable all erase/write
functions and should follow all programming opera-
tions. Execution of a READ instruction is independent of
both the EWEN and EWDS instructions.
The output data bits will toggle on the rising edge of the
CLK and are stable after the specified time delay (T
Sequential read is possible when CS is held high. The
memory data will automatically cycle to the next register
and output sequentially.
•••
•••
D0
CC
is removed from the device.
Dx
x
x
•••
T
T
CSL
CSL
D0
Dx
•••
DS21796K-page 7
D0
PD
).