W79E632A Datasheet, PDF (9/79 Pages) Winbond – 8-BIT MICROCONTROLLER

W79E632A/W79L632A
Table 1. Special Function Register Location Table
F8 EIP
F0 B
E8 EIE
E0 ACC
D8 WDCON PWMP
PWM0
PWM1
PWMCON1 PWM2
D0 PSW
C8 T2CON
T2MOD
RCAP2L RCAP2H TL2
TH2
C0
PWM5
PMR
STATUS
B8 IP
SADEN
B0 P3
A8 IE
SADDR
ROMCON SFRAL
SFRAH
A0 P2
XRAMAH P4CSIN
P4
98 SCON0 SBUF
P42AL
P42AH
P43AL
P43AH
90 P1
P4CONA P4CONB P40AL
P40AH
88 TCON
TMOD
TL0
TL1
TH0
TH1
80 P0
SP
DPL
DPH
Note: The SFRs in the column with dark borders are bit-addressable.
PWM3
PWMCON2 PWM4
TA
SFDFD
SFRCN
P41AL
CKCON
CHPCON
P41AH
PCON
A brief description of the SFRs is shown follows.
Port 0
Bit:
7
6
5
4
3
2
1
0
P0.7 P0.6 P0.5 P0.4 P0.3 P0.2 P0.1 P0.0
Mnemonic: P0
Address: 80h
Port 0 is an open-drain bi-directional I/O port. This port also provides a multiplexed low order
address/data bus during accesses to external memory. Besides, it has internal pull-up resisters enabled
by setting P0UP of P4CSIN (A2H) to high.
Stack Pointer
Bit:
7
6
5
4
3
2
1
0
SP.7 SP.6 SP.5 SP.4 SP.3 SP.2 SP.1 SP.0
Mnemonic: SP
Address: 81h
The Stack Pointer stores the Scratchpad RAM address where the stack begins. In other words, it always
points to the top of the stack.
Publication Release Date: Nov. 11, 2009
-9-
Revision A10