HT93LC46

CMOS 1K 3-Wire Serial EEPROM

Block Diagram

Pin Assignment

Rev. 1.40

1

March 14, 2007

Features

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.

C o n t r o l

L o g i c

a n d

C l o c k

G e n e r a t e r

D a t a

R e g i s t e r

A d d r e s s

R e g i s t e r

C S

S K

D I

V C C

V S S

D O

A d d r e s s

D e c o d e r

O u t p u t

B u f f e r

O R G

M e m o r y C e l l

A r r a y

1 K : ( 1 2 8 ´ 8 o r 6 4 ´ 1 6 )

1

2

3

4

8

7

6

5

V C C

N C

O R G

V S S

C S

S K

D I

D O

V C C

N C

O R G

V S S

C S

S K

D I

D O

1

2

3

4

8

7

6

5

H T 9 3 L C 4 6

8 D I P - A / S O P - A / T S S O P - A

H T 9 3 L C 4 6

8 S O P - B