93LC66AT-E/ST Microchip Technology, 93LC66AT-E/ST Datasheet - Page 7
![IC EEPROM 4KBIT 2MHZ 8TSSOP](/photos/6/59/65937/c04-086_st_sml.jpg)
93LC66AT-E/ST
Manufacturer Part Number
93LC66AT-E/ST
Description
IC EEPROM 4KBIT 2MHZ 8TSSOP
Manufacturer
Microchip Technology
Datasheet
1.93AA66BT-IOT.pdf
(30 pages)
Specifications of 93LC66AT-E/ST
Format - Memory
EEPROMs - Serial
Memory Type
EEPROM
Memory Size
4K (512 x 8)
Speed
2MHz
Interface
Microwire, 3-Wire Serial
Voltage - Supply
2.5 V ~ 5.5 V
Operating Temperature
-40°C ~ 125°C
Package / Case
8-TSSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
2.4
The ERASE instruction forces all data bits of the speci-
fied address to the logical ‘1’ state. CS is brought low
following the loading of the last address bit. This falling
edge of the CS pin initiates the self-timed program-
ming cycle, except on ‘93C’ devices where the rising
edge of CLK before the last address bit initiates the
write cycle.
FIGURE 2-1:
FIGURE 2-2:
© 2008 Microchip Technology Inc.
CLK
CLK
DO
DO
CS
DI
CS
DI
Erase
High-Z
High-Z
93AA66A/B/C, 93LC66A/B/C, 93C66A/B/C
1
1
ERASE TIMING FOR 93AA AND 93LC DEVICES
ERASE TIMING FOR 93C DEVICES
1
1
1
1
A
A
N
N
A
A
N
N
-1 A
-1 A
N
N
-2
-2
•••
•••
A0
A0
The DO pin indicates the Ready/
device if CS is brought high after a minimum of 250 ns
low (T
is still in progress. DO at logical ‘1’ indicates that the
register at the specified address has been erased and
the device is ready for another instruction.
Note:
T
T
CSL
CSL
CSL
). DO at logical ‘0’ indicates that programming
Issuing a Start bit and then taking CS low
will clear the Ready/
T
WC
T
T
T
SV
WC
SV
Check Status
Check Status
Busy
Busy
Ready
Ready
Busy
Busy
status from DO.
DS21795D-page 7
High-Z
High-Z
status of the
T
T
CZ
CZ