HT93LC56 Holtek, HT93LC56 Datasheet

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HT93LC56

Manufacturer Part Number
HT93LC56
Description
2K 3-wire CMOS serial EEPROM
Manufacturer
Holtek
Datasheet

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Part Number:
HT93LC56-A
Manufacturer:
HT
Quantity:
1 000
Part Number:
HT93LC56-A
Manufacturer:
HOLTEK
Quantity:
630
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Features
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
Block Diagram
Operating voltage V
Low power consumption
User selectable internal organization
3-wire Serial Interface
Write cycle time: 5ms max.
Read: 2.0V~5.5V
Write: 2.4V~5.5V
Operating: 5mA max.
Standby: 10 A max.
2K(HT93LC56): 256 8 or 128 16
CC
2K 3-Wire CMOS Serial EEPROM
1
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.
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
8-pin DIP/SOP package
Commercial temperature range
(0 C to +70 C)
6
rewrite cycles per word
HT93LC56
6th May ’99

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HT93LC56 Summary of contents

Page 1

... Serial Interface Write cycle time: 5ms max. 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 ...

Page 2

... Pin Assignment Pin Description Pin Name I Chip select input SK I Serial clock input DI I Serial data input DO O Serial data output VSS I Negative power supply ORG I Internal Organization NC — No connection VCC I Positive power supply HT93LC56 Description 2 6th May ’99 ...

Page 3

... CC I =2.1mA — — =10 A — — =–400 A 2.4 — =– –0.2 — =0V, f=250kHz — — =0V, f=250kHz — — OUT 3 HT93LC56 +0.3V CC 5 0.4 V 0.2 V — ...

Page 4

... Output load circuit 4 HT93LC56 Unit 250 kHz — ns — ns — ns — ns — ns — ns — — ns — ns — ms 6th May ’99 ...

Page 5

... Timing Diagrams Functional Description The HT93LC56 is accessed via a three-wire serial communication interface. The device is arranged into 128 words by 16 bits or 256 words by 8 bits depending whether the ORG pin is connected to VCC or VSS. The HT93LC56 contains seven in- structions: READ, ERASE, WRITE, EWEN, EWDS, ERAL and WRAL ...

Page 6

... CS is high. The DO pin will remain low but when the operation is over, the DO pin will return to high and further instructions can be executed. HT93LC56 ERAL The ERAL instruction erases the entire 128 16 or 256 8 memory cells to logical “1” state in the programming enable mode ...

Page 7

... Timing Diagrams READ EWEN/EWDS WRITE HT93LC56 7 6th May ’99 ...

Page 8

... ERASE ERAL WRAL HT93LC56 8 6th May ’99 ...

Page 9

... ORG=0 ORG=1 bit Code X8 X16 1 10 XA7~A0 XA6~ XA7~A0 XA6~ XA7~A0 XA6~ 11XXXXXXX 11XXXXXX 1 00 00XXXXXXX 00XXXXXX 1 00 10XXXXXXX 10XXXXXX 1 00 01XXXXXXX 01XXXXXX D7~D0 D15~D0 9 HT93LC56 Data ORG=0 ORG=1 X8 X16 D7~D0 D15~D0 — D7~D0 D15~D0 — — — 6th May ’99 ...

Page 10

... Holtek reserves the right to alter its products without prior notification. For the most up-to-date information, please visit our web site at http://www.holtek.com.tw. HT93LC56 10 6th May ’99 ...

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