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W742E Datasheet, PDF (4/60 Pages) Winbond – 4 BIT MICROCONTROLLER | |||
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W742E/C811
⢠Eleven Interrupt Sources
â Four internal interrupts (Divider0, Divider1, Timer 0, Timer 1)
â Seven external interrupts (RC.0-3, P1.2 ( INT0 ), Serial Port, P1.3 ( INT1 ))
⢠LCD Driver Output
â 40 segments x 16 commons
â 1/8 or 1/16 duty (selected by code option) 1/5 bias driving mode
â Clock source should be the sub-oscillator clock in the dual-clock operation mode
â 8 level software LCD contrast adjusting
â LCD operating voltage source could come from VDD or VLCD1 pin input
⢠MFP Output Pin
â Output is software controlled to generate modulating or nonmodulating frequency
â Works as frequency output specified by Timer 1
â Key tone generator
⢠DTMF Output pin
â Output is one channel Dual Tone Multi-Frequency signal for dialling
⢠8-bit Serial I/O Interface
â 8-bit transmit/receive mode by internal or external clock source
⢠Two Built-in 14-bit Frequency Dividers
â Divider0: the clock source is the main oscillator (Fosc)
â Divider1: the clock source is the sub-oscillator (Fs)
⢠Two Built-in 8-bit Programmable Countdown Tmers
â Timer 0: one of two internal clock frequencies (FOSC/4 or FOSC/1024) can be selected
â 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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