W921C880 데이터 시트보기 (PDF) - Winbond

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W921C880

4-BIT MICROCONTROLLER

Winbond 

W921E880A/W921C880

− PA Port: PA.0−PA.3 open drain and pull high resistor option

− PB Port: PB.0−PB.3 open drain and pull high resistor option

− PC Port: PC.1−PC.3 open drain and pull high resistor option

− PD Port: PD.0−PD.3 open drain and pull high resistor option

− PE Port: PE.0−PE.3

− PF Port: PF.0−PF.3

Interrupt

• Four External sources: INT0 ( P4.3 )

P4 Port ( P4.0−P4.2 )

• Six Internal sources: Timer 0

Timer 1

Timer 2

Timer 3

Comparator

Serial Port

Timer/Counter

• Timer 0: 2−19 order divider (double source)

Auto-reload timer

Watch-dog timer

• Timer 1: 2−19 order divider

Auto-reload timer

Arbitrary waveform generator

External event counter

• Timer 2: 2−19 order divider

Auto-reload timer

Arbitrary waveform generator

Period/Pulse width measurement function

• Timer 3: 2−19 order divider

Auto-reload timer

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

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