HT93LC46_14 Datasheet, PDF (1/11 Pages) Holtek Semiconductor Inc – CMOS 1K 3-Wire Serial EEPROM

HT93LC46
CMOS 1K 3-Wire Serial EEPROM
Features
• Operating voltage: 1.8V~5.5V
• Low power consumption
–– Operating: 5mA max.
–– Standby: 2µA max.
• User selectable internal organization
–– 1K: 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 device 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 applications where low power and low
voltage operation are essential. By popular microcon-
troller, 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. 2.10
1
January 16, 2014