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參數資料
| 型號： | W541E260 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4-BIT FLASH EPROM MICROCONTROLLER |
| 中文描述： | 4-BIT, FLASH, 4 MHz, MICROCONTROLLER, PQFP80 |
| 封裝： | QFP-80 |
| 文件頁數： | 5/11頁 |
| 文件大小： | 82K |
| 代理商： | W541E260 |
W541E260
Publication Release Date: June 2003
- 5 -
Revision A2
PAD DESCRIPTION
SYMBOL
XIN1
I/O
I
FUNCTION
Input pin for oscillator.
Connected to crystal or resistor to generate system clock by code option.
External 10~20pF capacitor uses to get accurate freq in crystal mode.
XOUT1
O
Output pin for oscillator.
Connected to crystal or resistor to generate system clock by code option.
20pF capacitor is built in internal for crystal mode.
Input pin for sub-oscillator. Connected to 32.768 KHz crystal. External
10~20pF capacitor uses to get accurate freq in crystal mode.
Output pin for sub-oscillator with internal oscillation capacitor. Built-in
20pF capacitor. Connected to 32.768 KHz crystal.
Input/Output port.
Input/output mode specified by port mode 1 register (PM1).
Input/Output port.
Input/output mode specified by port mode 2 register (PM2).
4-bit port for input only.
Each pin has an independent interrupt capability.
4-bit port for input only.
O Output port only.This port provides high sink current to drive LEDs.
O
Output pin only. This pin can output modulating or nonmodulating
frequency, or Timer 1 clock output specified by mode register 1 (MR1).
I
System reset pin with pull-high resistor.
XIN2
I
XOUT2
O
RA0 to RA3
I/O
RB0 to RB3
I/O
RC0 to RC3
I
RD0 to RD3
RE0 to RE3
MFP
I
RES
INT
I
External interrupt pin with pull-high resistor. This pin is bonding option for
the W541C250 body.
LCD segment output pins.Also can be used as DC output ports specified
by option codes.
LCD common signal output pins.
SEG0 to
SEG31
COM0 to
COM3
O
O
Static
COM0
COM1
COM2
COM3
Used
Not Used
1/2 Duty
Not Used
Not Used
Not Used
Not Used
1/3 Duty
Not Used
1/4 Duty
Used
Used
Used
Used
Used
Used
Used
Used
Used
The LCD alternating frequency can be selected by code option.
Connection terminals for voltage doubler (halver) capacitor.
Positive (+) supply voltage terminal.
Refer to Functional Description.
DH1, DH2
V
DD1,
V
DD2,
V
DD3
I
I
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