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參數(shù)資料
型號(hào)： W742C810
廠商： WINBOND ELECTRONICS CORP
元件分類： 微控制器/微處理器
英文描述： 4-BIT MICROCONTROLLER
中文描述： 4-BIT, MROM, 3.58 MHz, MICROCONTROLLER, PQFP100
封裝： 14 X 20 MM, 2.75 MM HEIGHT, QFP-100
文件頁(yè)數(shù)： 5/42頁(yè)
文件大小： 501K
代理商： W742C810
Preliminary W742C810
Publication Release Date: May 1999
- 5 -
Revision A1
4. PIN DESCRIPTION
SYMBOL
I/O
FUNCTION
XIN2
I
Input pin for sub-oscillator.
Connected to 32.768 Khz crystal only.
XOUT2
O
Output pin for sub-oscillator with internal oscillation capacitor. Connected
to 32.768 Khz crystal only.
XIN1
I
Input pin for main-oscillator.
Connected to 3.58MHz crystal to generate system clock.
XOUT1
O
Output pin for main-oscillator.
Connected to 3.58MHz crystal to generate system clock.
RA0-RA3
I/O
Input/Output port.
Input/output mode specified by port mode 1 register (PM1).
RB0-RB3
I/O
Input/Output port.
Input/output mode specified by port mode 2 register (PM2).
RC0-RC3
I
4-bit port for input only.
Each pin has an independent interrupt capability.
RD0-RD3
I/O
Input/Output port
Input/Output mode specified by port mode 5 register (PM5)
RE0-RE3
O
Output port only. With high sink current capacity for the LED application.
RF0-RF3
O
Output port only.
MFP
O
Output pin only.
This pin can output modulating or nonmodulating frequency, or Timer 1
clock output specified by mode register 1 (MR1).
DTMF
O
This pin can output dual-tone multifrequency signal for dialling.
RES
I
System reset pin with pull-high resistor.
SEG0-
SEG39
O
LCD segment output pins.
COM0-
COM3
O
LCD common signal output pins.
DH1, DH2
I
Connection terminals for voltage doubler (halver) capacitor.
V
DD1
V
DD2
I
Positive (+) supply voltage terminal.
Refer to Functional Description.
V
DD
I
Positive power supply (+).
V
SS
I
Negative power supply (-).
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