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W742C811 Datasheet, PDF (2/2 Pages) Winbond – 4-BIT MICROCONTROLLER | |||
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W742C(E)811
⢠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,
normally as key tone generator
â Works as frequency output specified by Timer 1
- 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 timers
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 18/14-bit watchdog timer selectable for system reset determined by code option
⢠Powerful instruction set: 1XX instructions
⢠16-level stack buffer
⢠Package type : 100-pin QFP
Publication Release Date: November 1998
-2-
Revision
A2
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