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參數資料
型號: W79E648
廠商: WINBOND ELECTRONICS CORP
英文描述: Fast 8051 Compatible microcontroller with a redesigned Processor
中文描述: 快速8051兼容微控制器重新設計的處理器
文件頁數: 5/80頁
文件大小: 407K
代理商: W79E648
Preliminary W79E648
Publication Release Date: 05/31/2004
Revision A1
- 5 -
Pin Description, continued
SYMBOL
TYPE
DESCRIPTIONS
P3.0
P3.7
I/O
PORT 3:
Port 3 is a bi-directional I/O port with internal pull-ups. All bits have
alternate functions, which are described below:
RXD(P3.0) : Serial Port 0 input
TXD(P3.1) : Serial Port 0 output
INT0
(P3.2) : External Interrupt 0
INT1
(P3.3) : External Interrupt 1
T0(P3.4) : Timer 0 External Input
T1(P3.5) : Timer 1 External Input
WR
(P3.6) : External Data Memory Write Strobe
RD
(P3.7) : External Data Memory Read Strobe
P4.0
P4.3
I/O
PORT 4:
Port 4 is a 4-bit bi-directional I/O port. The P4.3 also provide the
alternate function
REBOOT
which is H/W reboot from LD flash.
P5.0 – P5.7
I/O
PORT 5:
Port 5 is a bi-directional I/O port with internal pull-ups.
P6.0 – P6.7
I/O
PORT6:
Port 6 is a bi-directional I/O port with internal pull-ups.
P7.0 – P7.7
I/O
PORT 7:
Port 7 is a bi-directional I/O port with internal pull-ups.
* Note:
TYPE
I : input, O: output, I/O: bi-directional.
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