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參數資料
| 型號： | W742S82A |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4-BIT TELEPHONE CONTROLLER |
| 中文描述： | 4-BIT, MROM, 3.58 MHz, MICROCONTROLLER, PQFP80 |
| 封裝： | QFP-80 |
| 文件頁數： | 6/12頁 |
| 文件大小： | 193K |
| 代理商： | W742S82A |
W742S82A DATA SHEET
- 6 -
4. PIN DESCRIPTION
SYMBOL
I/O
FUNCTION
XIN2
I
Input pin for sub-oscillator.
Connected to 32.768KHz crystal only.
Output pin for sub-oscillator with internal oscillation capacitor. Connected to
32.768KHz crystal only.
Input pin for main-oscillator.
Connected to 3.58MHz or 400KHz crystal or RC to generate system clock.
Output pin for main-oscillator.
Connected to 3.58MHz or 400KHz crystal or RC to generate system clock.
Input/Output port.
Input/output mode specified by port mode 1 register (PM1).
Input/Output port.
Input/output mode specified by port mode 2 registers (PM2).
4-bit port for input only.
Each pin has an independent interrupt capability.
Input/Output port.
Input/output mode specified by port mode 5 registers (PM5).
O Output port only. With high sink current capacity for the LED application.
O Output port only.
Output pin only.
This pin can output modulating or non-modulating frequency, or Timer 1
specified frequency. It can be selected by bit 0 of BUZCR (BUZCR.0).
O
This pin can output dual-tone multi-frequency signal for dialing.
XOUT2
O
XIN1
I
XOUT1
O
RA0-RA3
I/O
RB0-RB3
I/O
RC0-RC3
I
RD0-RD3
I/O
RE0-RE3
RF0-RF3
MFP
O
DTMF
RES
SEG0-
SEG39
COM0-
COM3
DH1, DH2
I
System reset pin with pull-high resistor.
O
LCD segment output pins.
O
LCD common signal output pins.
The LCD alternating frequency can be selected by code option.
Connection terminals for voltage double (halve) capacitor.
Positive (+) supply voltage terminal.
Refer to Functional Description.
Positive power supply (+).
Negative power supply (-).
This pin has the built-in pull-low resistor.
This pin has the built-in pull-low resistor.
This pin has the built-in pull-low resistor.
I
VDD1
VDD2
I
VDD
VSS
VPP
MODE
DATA
I
I
I
I
I/O
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