HT93LC56
2K 3-Wire CMOS Serial EEPROM
Features
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Operating voltage V
CC
–
Read: 2.0V~5.5V
–
Write: 2.4V~5.5V
Low power consumption
–
Operating: 5mA max.
–
Standby: 10
µ
A max.
User selectable internal organization
–
2K(HT93LC56): 256
×
8 or 128
×
16
3-wire Serial Interface
Write cycle time: 5ms max.
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Automatic erase-before-write operation
Word/chip erase and write operation
Write operation with built-in timer
Software controlled write protection
10-year data retention after 100K rewrite
cycles
10
6
rewrite cycles per word
8-pin DIP/SOP package
Commercial temperature range
(0
°
C to +70
°
C)
General Description
The HT93LC56 is a 2K-bit low voltage nonvola-
tile, serial electrically erasable programmable
read only memory device using the CMOS float-
ing gate process. Its 2048 bits of memory are
organized into 128 words of 16 bits each when the
ORG pin is connected to VCC or organized into
256 words of 8 bits each when it is tied to VSS. The
device is optimized for use in many industrial
and commercial applications where low power
and low voltage operation are essential. By
popular microcontroller, the versatile serial in-
terface including chip select (CS), serial clock
(SK), data input (DI) and data output (DO) can
be easily controlled.
Block Diagram
1
6th May ’99
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
