SM894051C25 参数 Datasheet PDF下载

SyncMOS Technologies International, Inc.

SM894051

8-Bits Micro-controller

With 4KB Flash ROM embedded

Pin Description (20L PDIP / 20L SOIC)

Pin

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

$F8

$F0

$E8

$E0

$D8

$D0

$C8

$C0

$B8

$B0

$A8

$A0

$98

$90

$88

$80

SCON

0000 0000

P1

1111 1111

TCON

0000 0000

SBUF

xxxx xxxx

LEDENP1

0000 0000

TL1

0000 0000

DPH

0000 0000

LEDENP3

0000 0000

TH1

0000 0000

WDTC

0x0x x000

WDTKEY

0000 0000

IP

0000 0000

P3

1111 1111

IE

0000 0000

SCONF

0xxx xxxx

PSW

0000 0000

ACC

0000 0000

B

0000 0000

Symbol

RST

P3.0/RXD

P3.1/TXD

XTAL2

XTAL1

P3.2/#INT0

P3.3/#INT1

P3.4/T0

P3.5/T1

VSS

P3.7

P1.0/AIN0

P1.1/AIN1

P1.2

P1.3

P1.4

P1.5

P1.6

P1.7

VDD

Active

H

-/L

-/L

I/O

i

i/o

i/o

o

i

i/o

i/o

i/o

i/o

i/o

i/o

i/o

i/o

i/o

i/o

i/o

i/o

i/o

Names

Reset

bit 0 of port 3 & receive data

bit 1 of port 3 & transmit data

Crystal out

Crystal in

bit 2 of port 3 & low true interrupt 0

bit 3 of port 3 & low true interrupt 1

bit 4 of port 3 & timer 0

bit 5 of port 3 & timer 1

Sink Voltage, Ground

bit 7 of port 3

bit 0 of port 1 & positive 0 of the on chip analog comparator

bit 1 of port 1 & positive 1 of the on chip analog comparator

bit 2 of port 1

bit 3 of port 1

bit 4 of port 1

bit 5 of port 1

bit 6 of port 1

bit 7 of port 1

Drive voltage, +5 Vcc

$FF

$F7

$EF

$E7

$DF

$D7

$CF

$C7

$BF

$B7

$AF

$A7

$9F

$97

$8F

PCON

0000 0000

$87

Special Function Register (SFR) Memory Map

TMOD

0000 0000

SP

0000 0111

TL0

0000 0000

DPL

0000 0000

TH0

0000 0000

(Reserved)

Note: The text of SFRs with bold type characters are Extension Special Function Registers for SM894051

Specifications subject to change without notice contact your sales representatives for the most recent information.

4

SM894051 V1.4 09 /2006