參數(shù)資料
型號(hào): W78ERD2A40DN
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(shù): 15/72頁
文件大小: 606K
代理商: W78ERD2A40DN
W78ERD2
Publication Release Date: April 20, 2005
- 15 -
Revision A4
Port 1
Bit:
7
6
5
4
3
2
1
0
P1.7
P1.6
P1.5
P1.4
P1.3
P1.2
P1.1
P1.0
Mnemonic: P1 Address: 90h
P1.7-0: General purpose Input/Output port. Most instructions will read the port pins in case of a port
read access, however in case of read-modify-write instructions, the port latch is read. These alternate
functions are described below:
Port 4.1 Low Address Comparator
Bit:
7
6
5
4
3
2
1
0
P41AL.7 P41AL.6 P41AL.5 P41AL.4 P41AL.3 P41AL.2 P41AL.1 P41AL.0
Mnemonic: P41AL Address: 94h
Port 4.1 High Address Comparator
Bit:
7
6
5
4
3
2
1
0
P41AH.7 P41AH.6 P41AH.5 P41AH.4 P41AH.3 P41AH.2 P41AH.1 P41AH.0
Mnemonic: P41AH Address: 95h
Serial Port Control
Bit:
7
6
5
4
3
2
1
0
SM0/FE
SM1
SM2
REN
TB8
RB8
TI
RI
Mnemonic: SCON Address: 98h
BIT
NAME
FUNCTION
7
SM0/FE
Serial port 0, Mode 0 bit or Framing Error Flag: The SMOD0 bit in PCON SFR
determines whether this bit acts as SM0 or as FE. The operation of SM0 is
described below. When used as FE, this bit will be set to indicate an invalid stop bit.
This bit must be manually cleared in software to clear the FE condition.
6
SM1
Serial port Mode bit 1:
Mode: SM0 SM1 Description Length Baud rate
0 0 0 Synchronous 8 4/12 Tclk
1 0 1 Asynchronous 10 Variable
2 1 0 Asynchronous 11 64/32 Tclk
3 1 1 Asynchronous 11 Variable
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