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R

ST7291L

BRIEF DATA

8-BIT MCU WITH 8/12/16/24/32K ROM, TIMER, SUPPLY

SUPERVISOR AND CARRIER FREQUENCY GENERATOR

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

2 to 5.5V Supply Operating Range

8MHz Maximum Clock Frequency

Fully Static Operation

0 to +70擄C Operating Temperature Range

Run, Wait, Stop and RAM Retention modes

User ROM: 12/16/24/ 32 Kbytes

Data RAM: 256/384 bytes

28 pin SO Plastic Packages

21 Bidirectional I/O lines

8 standard Push-pull I/Os with wake-up feature

13 standard Push-pull I/Os

16-bit Timer with Output Compare (no output

pin)

Low Voltage Detector (LVD)

Interrupt Wake-up function

IR Carrier Frequency Generator

8-bit Data Manipulation

63 Basic Instructions

17 main Addressing Modes

8x8 Unsigned Multiply instruction

True Bit Manipulation

Complete Development Support on PC/DOS/

Windows 3.1x/95/NT with Real-Time Emulator

Full Software Package (Cross -Assembler,

Debugger)

Full Hardware Emulator

EPROM and OTP support

PSO28

(See end of Datasheet for Ordering Information)

Note 1.

This device is in development, consult your

SGS-TH OMSON representative for the current status.

Figure 1. Pin Description

V

DD

RESET

WKP

PA7

PA6

PA5

PA4

PA3

PA2

PA1

PC0

PA0

PB0

PB1

OSCin

OSCout

PC1/OP

(1)

PC6

PC7

V

SS

TEST

PC5

PB7

PB6

PB5

PB4

PB3

PB2

DEVICE SUMMARY

DEVICE

ST7291L6

(1)

ST7291L5

ST7291L5A

ST7291L4

ST7291L3

ST7291L2

ROM

(Bytes)

RAM

(Bytes)

CARRIER

GENERATOR

Yes

Yes

Yes

No

No

No

32K

24K

16K

16K

12K

8K

384

384

384

256

256

256

1

2

3

4

5

6

7

8

9

10

11

12

13

14

28

27

26

25

24

23

22

21

20

19

18

17

16

15

Notes:

1. PC1 on ST7291L2/L3/L4; software selectable as OP on

ST7291L6/L5/L5A

December 1997

This is preliminary information ona new product in development orundergoing evaluation. Details are subject to change without notice.

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