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參數(shù)資料
型號: W77L32
廠商: WINBOND ELECTRONICS CORP
元件分類: 8位微控制器
英文描述: 8-BIT MICROCONTROLLER
中文描述: 8位微控制器
文件頁數(shù): 11/74頁
文件大小: 871K
代理商: W77L32
Preliminary W77L32
Publication Release Date: November 2, 2001
- 11 - Revision A1
Special Function Registers
The W77L32 uses Special Function Registers (SFRs) to control and monitor peripherals and their
Modes.
The SFRs reside in the register locations 80-FFh and are accessed by direct addressing only. Some of
the SFRs are bit addressable. This is very useful in cases where one wishes to modify a particular bit
without changing the others. The SFRs that are bit addressable are those whose addresses end in 0 or
8. The W77L32 contains all the SFRs present in the standard 8052. However, some additional SFRs
have been added. In some cases unused bits in the original 8052 have been given new functions. The
list of SFRs is as follows. The table is condensed with eight locations per row. Empty locations indicate
that there are no registers at these addresses. When a bit or register is not implemented, it will read
high.
Table 1. Special Function Register Location Table
F8 EIP
F0 B
E8 EIE
E0 ACC
D8 WDCON
D0 PSW
C8 T2CON
T2MOD
RCAP2L
RCAP2H
TL2
TH2
C0 SCON1
SBUF1
ROMMAP
PMR
STATUS
TA
B8 IP
SADEN
SADEN1
B0 P3
A8 IE
SADDR
SADDR1
A0 P2
P4
98 SCON0
SBUF
90 P1
EXIF
88 TCON
TMOD
TL0
TL1
TH0
TH1
CKCON
80 P0
SP
DPL
DPH
DPL1
DPH1
DPS
PCON
Note: The SFRs in the column with dark borders are bit-addressable.
A brief description of the SFRs now 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
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