HT93LC46_09 Datasheet, PDF (1/12 Pages) Holtek Semiconductor Inc – CMOS 1K 3-Wire Serial EEPROM

HT93LC46
CMOS 1K 3-Wire Serial EEPROM
Features
· Operating voltage:
- 2.2V~5.5V for temperature 0°C to +70°C
- 2.4V~5.5V for temperature -40°C to +85°C
· Low power consumption
- Operating: 5mA max.
- Standby: 10mA max.
· User selectable internal organization
- 1K(HT93LC46): 128´8 or 64´16
· 3-wire Serial Interface
· Write cycle time: 5ms max.
· Automatic erase-before-write operation
· Word/chip erase and write operation
· Write operation with built-in timer
· Software controlled write protection
· 40-year data retention
· 10⁶ rewrite cycles per word
· Industrial temperature range (-40°C to +85°C)
· 8-pin DIP/SOP/TSSOP package
General Description
The HT93LC46 is a 1K-bit low voltage nonvolatile, serial
electrically erasable programmable read only memory de-
vice using the CMOS floating gate process. Its 1024 bits of
memory are organized into 64 words of 16 bits each when
the ORG pin is connected to VCC or organized into 128
words of 8 bits each when it is tied to VSS. The device is
optimized for use in many industrial and commercial appli-
cations where low power and low voltage operation are
essential. By popular microcontroller, the versatile serial
interface including chip select (CS), serial clock (SK), data
input (DI) and data output (DO) can be easily controlled.
Block Diagram
CS
C o n tro l
A d d re s s
R e g is te r
SK
L o g ic
and
VCC
ORG
C lo c k
G e n e ra te r
A d d re s s
D ecoder
VSS
M e m o r y C e ll
DI
A rra y
D a ta
1 K : (1 2 8 ´ 8 o r 6 4 ´ 1 6 )
R e g is te r
O u tp u t
B u ffe r
DO
Pin Assignment
CS 1
SK 2
DI 3
DO 4
8 VCC
7 NC
6 ORG
5 _VSS
H T93LC 46
8 D IP -A /S O P -A /T S S O P -A
NC 1
VCC 2
CS 3
SK 4
8 ORG
7 VSS
6 DO
5 DI
H T93LC 46
8 S O P -B
Rev. 1.90
1
July 9, 2009