W921E400 데이터 시트보기 (PDF) - Winbond

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W921E400

4-BIT MICROCONTROLLER

Winbond 

W921E400A/W921C400

P6TP register: (address = 006H, default data = 0H)

b3

b2

b1

b0

0: P6.0 work as CMOS type

1: P6.0 work as open-drain type

0: P6.1 work as CMOS type

1: P6.1 work as open-drain type

0: P6.2 work as CMOS type

1: P6.2 work as open-drain type

0: P6.3 work as CMOS type

1: P6.3 work as open-drain type

• PA, PB:

PABPH register: (address = 007H, default data = 0H)

b3

b2

b1

b0

Reserved

Reserved

0: PA (4 pins) without pull-high resistor

1: PA (4 pins) with pull-high resistor

0: PB (4 pins) without pull-high resistor

1: PB (4 pins) with pull-high resistor

PABTP register: (address = 008H, default data = 0H)

b3

b2

b1

b0

Reserved

Reserved

0: PA (4 pins) work as CMOS type

1: PA (4 pins) work as open-drain type

0: PB (4 pins) work as CMOS type

1: PB (4 pins) work as open-drain type

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Publication Release Date: July 1999

Revision A3

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