W78LE58_06 Datasheet, PDF (7/34 Pages) Winbond – 8-BIT MICROCONTROLLER

W78LE58/W78L058A
W78L058A Special Function Registers (SFRs) and Reset Values
F8
F0
+B
00000000
E8
+ACC
E0 _00000000
D8
+P4
xxxx1111
D0
+PSW
00000000
+T2CON
C8 _00000000
RCAP2L
00000000
RCAP2H
00000000
TL2
00000000
C0
XICON
00000000
P4CONA
00000000
P4CONB
00000000
SFRAL
00000000
+IP
B8 _00000000
+P3
B0 _00000000
P43AL
00000000
+IE
A8
00000000
P42AL
00000000
+P2
A0
11111111
+SCON
98
00000000
SBUF
xxxxxxxx
+P1
90
11111111
P41AL
00000000
+TCON
TMOD
TL0
TL1
TH0
88
00000000 00000000 00000000 00000000 00000000
+P0
SP
DPL
DPH
P40AL
80
11111111 00000111 00000000 00000000 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.
TH2
00000000
SFRAH
00000000
P43AH
00000000
P42AH
00000000
P41AH
00000000
TH1
00000000
P40AH
00000000
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
Port 4
Port 4, address D8H, is a 4-bit multipurpose programmable I/O port. Each bit can be configured
individually by software. The Port 4 has four different operation modes.
Mode 0: P4.0−P4.3 is a bi-directional I/O port which is same as port 1. P4.2 and P4.3 also serve as
external interrupt ^PSENand INT2 if enabled.
Mode 1: P4.0−P4.3 are read strobe signals that are synchronized with RD signal at specified
addresses. These signals can be used as chip-select signals for external peripherals.
Mode 2: P4.0−P4.3 are write strobe signals that are synchronized with WR signal at specified
addresses. These signals can be used as chip-select signals for external peripherals.
Publication Release Date: December 4, 2006
-7-
Revision A6