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W541E261 데이터시트 PDF




Winbond에서 제조한 전자 부품 W541E261은 전자 산업 및 응용 분야에서
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부품번호 W541E261 기능
기능 4BIT MICROCONTROLLER
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W541E261 데이터시트, 핀배열, 회로
W541E/C261 DATA SHEET
4BIT MICROCONTROLLER, 2K ×16 ROM, 128 ×4 RAM 128 -DOT LCD
Table of Contents-
1. INTRODUCTION......................................................................................................................... 2
2. FEATURES ................................................................................................................................. 3
3. ARCHITECTURE ........................................................................................................................ 5
3.1 BLOCK DIAGRAM.......................................................................................................... 5
3.2 PIN CONFIGURATION................................................................................................... 6
3.3 PAD DESCRIPTION....................................................................................................... 7
4. ABSOLUTE MAXIMUM RATINGS ............................................................................................. 8
5. DC CHARACTERISTICS............................................................................................................ 9
6. AC CHARACTERISTICS .......................................................................................................... 10
7. TYPICAL APPLICATION CIRCUIT........................................................................................... 11
8. PACKAGE DIMENSION ........................................................................................................... 12
9. VERSION HISTORY ................................................................................................................. 13
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Publication Release Date: June 12, 2007
- 1 - Revision A1




W541E261 pdf, 반도체, 판매, 대치품
W541E/C261 DATA SHEET
Two built-in 8-bit programmable countdown timers
Timer 0: one of two internal clock frequencies (FOSC/4 or FOSC/1024) can be selected
Timer 1: includes an auto-reload function; and one of three internal clock frequencies (FOSC or
FOSC/64,Fs) can be selected or falling edge of pin RC.0 can be selected (output through MFP
pin)
Built-in 18/14-bit watchdog timer selectable for system reset
Powerful instruction set: 120 instructions
8-level subroutine (include interrupt) nesting
Up to 1 μS instruction cycle (with 4 MHz operating frequency)
Packaged in 80-pin QFP
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W541E261 전자부품, 판매, 대치품
W541E/C261 DATA SHEET
3.3 PAD DESCRIPTION
SYMBOL
XIN1
XOUT1
XIN2
XOUT2
RA0 RA3
RB0 RB3
RC0 RC3
RD0 RD3
RE0 RE3
/INT
MFP
I/O FUNCTION
Input pin for oscillator.
I Connected to crystal or resistor to generate system clock by code option. External
15~20pF capacitor uses to get accurate freq in crystal mode.
Output pin for oscillator
O Connected to crystal or resistor to generate system clock by code option. 20PF
capacitor is built in internal for crystal mode.
I
Input pin for sub-oscillator. Connected to a 32.768 KHz crystal. External 15~20pF
capacitor uses to get accurate freq in crystal mode..
O
oscillator. Connected Output pin for sub to a 32.768 KHz crystal. 20PF capacitor is
built in internal for crystal mode.
I/O
Input/Output port.
Input/output mode specified by port mode 1 register (PM1).
I/O
Input/Output port.
Input/output mode specified by port mode 2 register (PM2).
I
4-bit port for input only.
Each pin has an independent interrupt capability.
I 4-bit port for input only.
O
Output port only.
This port provides high sink current to drive LEDs.
I
External interrupt pin with pull-high resistor. This pin is bonding option for
the W541C250 body. Only for W541E261.
Output pin only.
O This pin can output modulating or nonmodulating frequency, or Timer 1 clock
output specified by mode register 1 (MR1).
RES
SEG0SEG31
I System reset pin with pull-high resistor.
O
LCD segment output pins.
Can also be used as DC output ports specified by code option.
LCD common signal output pins.
COM0COM3
DH1, DH2
VDD1, VDD2,
VDD3
VDD
Static 1/2 Duty 1/3 Duty 1/4 Duty
COM0 Used
Used
Used
Used
O COM1 Not Used Used Used Used
COM2 Not Used Not Used Used
Used
COM3 Not Used Not Used Not Used Used
The LCD alternating frequency can be selected by code option.
I Connection terminals for voltage doubler (halver) capacitor.
Positive (+) supply voltage terminal.
I
Refer to Functional Description.
I Positive power supply (+).
Publication Release Date: June 12, 2007
- 7 - Revision A1
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관련 데이터시트

부품번호상세설명 및 기능제조사
W541E261

4BIT MICROCONTROLLER

Winbond
Winbond

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