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參數資料
| 型號： | W78LE516A |
| 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： | 13/37頁 |
| 文件大小： | 256K |
| 代理商： | W78LE516A |
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W78LE516/W78L516A
Publication Release Date: November 6, 2006
- 13 -
Revision A7
P42AH, P42AL:
The Base address register for comparator of P4.2. P42AH contains the high-order byte of address,
P42AL contains the low-order byte of address.
P43AH, P43AL:
The Base address register for comparator of P4.3. P43AH contains the high-order byte of address,
P43AL contains the low-order byte of address.
P4 (D8H)
BIT
7
6
5
4
3
2
1
0
NAME
-
-
-
-
P43
P42
P41
P40
FUNCTION
Reserve
Reserve
Reserve
Reserve
Port 4 Data bit which outputs to pin P4.3 at mode 0.
Port 4 Data bit which outputs to pin P4.2 at mode 0.
Port 4 Data bit which outputs to pin P4.1at mode 0.
Port 4 Data bit which outputs to pin P4.0 at mode 0.
Here is an example to program the P4.0 as a write strobe signal at the I/O port address 1234H
1237H
and positive polarity, and P4.1
P4.3 are used as general I/O ports.
MOV P40AH,#12H
MOV P40AL,#34H
MOV P4CONA,#00001010B
; Base I/O address 1234H for P4.0
; P4.0 a write strobe signal and address line A0 and A1 are masked.
; P4.1
P4.3 as general I/O port which are the same as PORT1
; Write the P40SINV = 1 to inverse the P4.0 write strobe polarity
; default is negative.
MOV P4CONB,#00H
MOV P2ECON,#10H
Then any instruction MOVX @DPTR,A (with DPTR = 1234H
1237H) will generate the positive polarity
write strobe signal at pin P4.0. And the instruction MOV P4, #XX will output the bit3 to bit1 of data #XX
to pin P4.3
P4.1.
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| W78LE516F-24 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
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| W78LE51P-24 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MTP MICROCONTROLLER |
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