W78L516A 查看數據表（PDF） - Winbond

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W78L516A

8-BIT MICROCONTROLLER

Winbond 

W78LE516/W78L516A

5.8 Reset

The external RESET signal is sampled at S5P2. To take effect, it must be held high for at least two

machine cycles while the oscillator is running. An internal trigger circuit in the reset line is used to

deglitch the reset line when the W78L516 is used with an external RC network. The reset logic also

has a special glitch removal circuit that ignores glitches on the reset line. During reset, the ports are

initialized to FFH, the stack pointer to 07H, PCON (with the exception of bit 4) to 00H, and all of the

other SFR registers except SBUF to 00H. SBUF is not reset.

W78L516 Special Function Registers (SFRs) and Reset Values

F8

+B

F0

00000000

E8

+ACC

E0

00000000

+P4

D8

xxxx1111

+PSW

D0

00000000

+T2CON

C8

00000000

XICON

C0

00000000

+IP

B8

00000000

+P3

B0

00000000

+IE

A8

00000000

+P2

A0

11111111

+SCON

98

00000000

+P1

90

11111111

+TCON

88

00000000

+P0

80

11111111

SBUF

xxxxxxxx

TMOD

00000000

SP

00000111

RCAP2L

00000000

P4CONA

00000000

TL0

00000000

DPL

00000000

RCAP2H

00000000

P4CONB

00000000

TL1

00000000

DPH

00000000

TL2

00000000

SFRAL

00000000

TH2

00000000

SFRAH

00000000

P43AL

00000000

P42AL

00000000

P43AH

00000000

P42AH

00000000

P41AL

00000000

TH0

00000000

P40AL

00000000

P41AH

00000000

TH1

00000000

P40AH

00000000

Notes:

1. The SFRs marked with a plus sign(+) are both byte- and bit-addressable.

2. The text of SFR with bold type characters are extension function registers.

CHPENR

00000000

SFRFD

00000000

P2ECON

0000xx00

FF

F7

EF

E7

DF

D7

CF

SFRCN

C7

00000000

CHPCON

BF

0xx00000

B7

AF

A7

9F

97

8F

PCON

87

00110000

Publication Release Date: November 6, 2006

-9-

Revision A7

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