Rainbow-electronics HT93LC56 User Manual download pdf

HT93LC56

CMOS 2K 3-Wire Serial EEPROM

Block Diagram

Pin Assignment

Rev. 1.20 1 October 26, 2001

Features

Operating voltage V

Read: 2.0V~5.5V

Write: 2.4V~5.5V

Low power consumption

Operating: 5mA max.

Standby: 10mA max.

User selectable internal organization

2K(HT93LC56): 256´8or128´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

10-year data retention after 100K rewrite cycles

rewrite cycles per word

Commercial temperature range (0°Cto+70°C)

8-pin DIP/SOP package

General Description

The HT93LC56 is a 2K-bit low voltage nonvolatile, serial

electrically erasable programmable read only memory de

vice using the CMOS floating 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 ap

plications 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.

M e m o r y C e l l

A r r a y

2 K : ( 2 5 6

8 o r 1 2 8

1 6 )

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 o 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

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

H T 9 3 L C 5 6

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

H T 9 3 L C 5 6

8 S O P - B

V C C

N C

V S S

C S

S K

D I

D O

H T 9 3 L C 5 6

8 S O P - C

1 2 3 4 5 6 7

HT93LC56 1

Summary of Contents

Page 1 - HT93LC56

HT93LC56CMOS 2K 3-Wire Serial EEPROMBlock DiagramPin AssignmentRev. 1.20 1 October 26, 2001Features·Operating voltage VCC-Read: 2.0V~5.5V-Write: 2.4V~

Page 2

Pin DescriptionPin Name I/O DescriptionCS I Chip select inputSK I Serial clock inputDI I Serial data inputDO O Serial data outputVSS¾Negative power su

Page 3

A.C. CharacteristicsSymbol ParameterVCC=5V±10% VCC=3V±10%VCC=2V*UnitMin. Max. Min. Max. Min. Max.fSKClock Frequency 0 2000 0 500 0 250 kHztSKHSK High

Page 4

HT93LC56Rev. 1.20 4 October 26, 2001Functional DescriptionThe HT93LC56 is accessed via a three-wire serial com-munication interface. The device is arr

Page 5

Timing DiagramsREADEWEN/EWDSWRITEHT93LC56Rev. 1.20 5 October 26, 2001C SS KS t a n d b yD I0( 1 )0S t a r t b i t1 1 = E W E N0 0 = E W D SC SS KD O

Page 6

ERASEERALWRALInstruction Set SummaryHT93LC56Instruction CommentsStartbitOpCodeAddress DataORG=0X8ORG=1X16ORG=0X8ORG=1X16READ Read data 1 10 XA7~A0 XA6

Page 7

HT93LC56Rev. 1.20 7 October 26, 2001Copyright Ó 2001 by HOLTEK SEMICONDUCTOR INC.The information appearing in this Data Sheet is believed to be accura

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