W742E Просмотр технического описания (PDF) - Winbond

Номер в каталоге

Компоненты Описание

Список матч

W742E

4-BIT MICROCONTROLLER

Winbond 

W742E/C811

Pin Description, continued

SYMBOL

RE0−RE3

RF0−RF3

P00−P03

P10−P13

Mode

MFP

DTMF

RES

VPP

SEG0−SEG31

COM0−

COM15

SEG32−SEG39

(K00−K03,

K10−K13)

I/O

FUNCTION

O Output port only. CMOS type with high sink current capacity for the

LED application.

I/O Input/Output port.

Input/output mode specified by port mode 6 register (PM6).

P0.0 and P0.1 can be a serial I/O interface selected by SIR register.

P0.0 indicates serial clock, P0.1indicates serial data.

I Input port only.

P1.2 & P1.3 indicates hardware interrupt(/INT0 & /INT1)

P1.3: Mode select for electrical erasable EPROM type

Output pin only, default in low state.

O This pin can output modulating or nonmodulating frequency, or Timer

1 clock output specified by mode register 1 (MR1).

O This pin can output dual-tone multifrequency signal for dialling.

I System reset pin with internal pull-high resistor.

VPP: supply programming voltage, without internal pull-high resistor

for electrical erasable EPROM type for avoiding high voltage

programming damage

O LCD segment output pins.

O LCD common signal output pins.

The LCD alternating frequency can be selected by code option.

LCD segment output pins or DC N-MOS open drain output pins

O selected by code option.

CP, CN

VLCD1

VDD

VSS

I Connection terminals for LCD voltage double capacitor (0.1 µF),

tuning the capacitor value can reduce the LCD driving current.

I LCD supply voltage input or connect capacitor (0.1 µF) to ground

when enable internal pump LCD voltage

I Positive power supply (+).

I Negative power supply (-).

- 10 -

Share Link: