W742E Просмотр технического описания (PDF) - Winbond

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W742E

4-BIT MICROCONTROLLER

Winbond 

W742E/C811

• Eleven Interrupt Sources

− Four internal interrupts (Divider0, Divider1, Timer 0, Timer 1)

− Seven external interrupts (RC.0-3, P1.2 ( INT0 ), Serial Port, P1.3 ( INT1 ))

• LCD Driver Output

− 40 segments x 16 commons

− 1/8 or 1/16 duty (selected by code option) 1/5 bias driving mode

− Clock source should be the sub-oscillator clock in the dual-clock operation mode

− 8 level software LCD contrast adjusting

− LCD operating voltage source could come from VDD or VLCD1 pin input

• MFP Output Pin

− Output is software controlled to generate modulating or nonmodulating frequency

− Works as frequency output specified by Timer 1

− Key tone generator

• DTMF Output pin

− Output is one channel Dual Tone Multi-Frequency signal for dialling

• 8-bit Serial I/O Interface

− 8-bit transmit/receive mode by internal or external clock source

• Two Built-in 14-bit Frequency Dividers

− Divider0: the clock source is the main oscillator (Fosc)

− Divider1: the clock source is the sub-oscillator (Fs)

• Two Built-in 8-bit Programmable Countdown Tmers

− Timer 0: one of two internal clock frequencies (FOSC/4 or FOSC/1024) can be selected

− Timer 1: with auto-reload function and one of two internal clock frequencies (FOSC or FOSC/64 or

Fs) can be selected (signal output through MFP pin)

• Built-in 18/15-bit Watchdog Timer Selectable for System Reset, Enable/Disable by Code Option

• Powerful Instruction Set

• 16-level Stack Buffer

• Packaged in 100-pin QFP

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