參數(shù)資料
型號(hào): W78ERD2A40PN
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, PQCC44
封裝: PLASTIC, LCC-44
文件頁數(shù): 23/72頁
文件大?。?/td> 606K
代理商: W78ERD2A40PN
W78ERD2
Publication Release Date: April 20, 2005
- 23 -
Revision A4
Port 4 Control Register A
Bit:
7
6
5
4
3
2
1
0
P41FUN1 P41FUN0 P41CMP1P41CMP0 P40FUN1 P40FUN0 P40CMP1 P40CMP0
Mnemonic: P4CONA Address: C2h
BIT
NAME
P41FUN1
P41FUN0
P41CMP1
P41CMP0
P40FUN1
P40FUN0
P40CMP1
P40CMP0
FUNCTION
7, 6
The P4.1 function control bits which are the similar definition as P43FUN1,
P43FUN0.
5, 4
The P4.1 address comparator length control bits which are the similar
definition as P43CMP1, P43CMP0.
3, 2
The P4.0 function control bits which are the similar definition as P43FUN1,
P43FUN0.
1, 0
The P4.0 address comparator length control bits which are the similar
definition as P43CMP1, P43CMP0.
Port 4 Control Register B
Bit:
7
6
5
4
3
2
1
0
P43FUN1 P43FUN0 P43CMP1 P43CMP0 P42FUN1 P42FUN0 P42CMP1 P42CMP0
Mnemonic: P4CONB Address: C3h
BIT
NAME
FUNCTION
7, 6
P43FUN1
P43FUN0
00: Mode 0. P4.3 is a general purpose I/O port which is the same as Port1.
01: Mode 1. P4.3 is a Read Strobe signal for chip select purpose. The
address range depends on the SFR P43AH, P43AL, P43CMP1 and
P43CMP0.
10: Mode 2. P4.3 is a Write Strobe signal for chip select purpose. The
address range depends on the SFR P43AH, P43AL, P43CMP1 and
P43CMP0.
11: Mode 3. P4.3 is a Read/Write Strobe signal for chip select purpose. The
address range depends on the SFR P43AH, P43AL, P43CMP1, and
P43CMP0.
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