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參數資料
型號: W79E532A40DN
廠商: WINBOND ELECTRONICS CORP
元件分類: 微控制器/微處理器
英文描述: 8-BIT MICROCONTROLLER
中文描述: 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PDIP40
封裝: DIP-40
文件頁數: 10/77頁
文件大小: 523K
代理商: W79E532A40DN
W79E532/W79L532
- 10 -
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.
Data Pointer Low
Bit:
7
6
5
4
3
2
1
0
DPL.7
DPL.6
DPL.5
DPL.4
DPL.3
DPL.2
DPL.1
DPL.0
Mnemonic: DPL
Address: 82h
This is the low byte of the standard 8052 16-bit data pointer.
Data Pointer High
Bit:
7
6
5
4
3
2
1
0
DPH.7
DPH.6
DPH.5
DPH.4
DPH.3
DPH.2
DPH.1
DPH.0
Mnemonic: DPH
Address: 83h
This is the high byte of the standard 8052 16-bit data pointer.
Power Control
Bit:
7
6
5
4
3
2
1
0
SM0D
SMOD0
-
-
GF1
GF0
PD
IDL
Mnemonic: PCON
Address: 87h
SMOD : This bit doubles the serial port baud rate in mode 1, 2, and 3 when set to 1.
SMOD0: Framing Error Detection Enable: When SMOD0 is set to 1, then SCON.7 indicates a Frame
Error and acts as the FE flag. When SMOD0 is 0, then SCON.7 acts as per the standard
8052 function.
GF1-0: These two bits are general purpose user flags.
相關PDF資料
PDF描述
W79E532A40FL 8-BIT MICROCONTROLLER
W79E532A40FN 8-BIT MICROCONTROLLER
W79E532A40PL 8-BIT MICROCONTROLLER
W79E532A40PN 8-BIT MICROCONTROLLER
W79L532 8-BIT MICROCONTROLLER
相關代理商/技術參數
參數描述
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