TMS27C020 262144 BY 8-BIT UV ERASABLE

TMS27PC020 262144 BY 8-BIT

PROGRAMMABLE READ-ONLY MEMORIES

SMLS020C – NOVEMBER 1990 – REVISED SEPTEMBER 1997

1

POST OFFICE BOX 1443

Megabit EPROMs

Package and 32-Lead Plastic Leaded Chip

Carrier

’27C / PC020-10

100 ns

’27C / PC020-12

120 ns

’27C / PC020-15

150 ns

’27C / PC020-20

200 ns

’27C / PC020-25

250 ns

Microprocessor-Based Systems

Programming

Standard TTL Loads

and Output Pins

– Active... 165 mW Worst Case

– Standby... 0.55 mW Worst Case

(CMOS-Input Levels)

description

The TMS27C020 series are 262 144 by 8-bit

(2 097 152-bit), ultraviolet (UV) light erasable,

electrically programmable read-only memories

(EPROMs).

The TMS27PC020 series are one-time program-

mable (OTP) electrically programmable read-only

memories (PROMs).

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

32 1 32 31

14

5

6

7

8

9

10

11

12

13

29

28

27

26

25

24

23

22

21

430

15 16 17 18 19 20

J PACKAGE

( TOP VIEW )

PIN NOMENCLATURE

A0 – A17

Address Inputs

DQ0 – DQ7

Inputs (programming) / Outputs

E

Chip Enable

G

Output Enable

GND

Ground

PGM

Program

VCC

5-V Power Supply

VPP

13-V Power Supply †

†Only in program mode

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

A16

A15

A12

A7

A6

A5

A4

A3

A2

A1

A0

DQ0

DQ1

DQ2

GND

PGM

A17

A14

A13

A8

A9

A11

G

A10

E

DQ7

DQ6

DQ5

DQ4

DQ3

A14

A13

A8

A9

A11

G

A10

E

DQ7

A7

A6

A5

A4

A3

A2

A1

A0

DQ0

TMS27PC020

FM PACKAGE

( TOP VIEW )

Copyright

© 1997, Texas Instruments Incorporated

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.