W921E400 Просмотр технического описания (PDF) - Winbond

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W921E400

4-BIT MICROCONTROLLER

Winbond 

W921E400A/W921C400

Serial I/O Interface

• Clock synchronous multi-nibbles serial transmitter/receiver interface

DTMF Generator

• One channel DTMF generator

Beep Tone Generator

• 4 frequencies (2K, 1K, 630, 520 Hz) software selectable beep tone generator

Voltage Comparator

• Multiplexed four channel voltage comparator

Timer/Counter

• Timer 0: 2 to 19 order divider, auto-reload timer, watch-dog timer

• Timer 2: 2 to 19 order divider, auto-reload timer, arbitrary waveform generator, period/pulse width

measurement function

• Timer 3: 2 to 19 order divider, auto-reload timer

Interrupt

• Two external sources: INT0 (P4.3), P4 Port (P4.2)

• Five internal sources: Timer 0, Timer 2, Timer 3, Comparator, Serial Port

Operating Mode (System Clock)

• Normal mode: System clock operating

• HOLD mode: No operation except for oscillator (system clock stops only)

• STOP mode: No operation including oscillator

Addressing Mode

• ROM: Indirect call addressing mode

Long jump/call addressing mode

• RAM: Direct addressing mode

Indirect addressing mode

Working register addressing mode

• Look-up table addressing mode

Instruction Sets

• 117 instruction sets

Package Type

• 28-pin DIP, 28-pin SOP

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