FS9912 datasheet(23/34 Pages) FORTUNE

Il numero della parte	FS9912

Spiegazioni elettronici	8-bit MCU with 4k program ROM

PDF	34 Pages

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Produttore elettronici	FORTUNE [Fortune Semiconductor Corp.]

Homepage	https://www.ic-fortune.com/eng/index.asp

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23 / 34 page

FS9912

Rev. 3.6

23/34

PT1PU[7:0]

PT1EN[7:0]

PT1[7:0]

LOAD

Write

AR==20h

READ&AR==20h

Databus[7:0]

PT1 is I/O port with pull-up resistor enable control.

PT1EN [N] =0: PT1 [N] is as input port, 1: PT1 [N] is as output port, system reset is 0.

PT1PU [N]=0: PT1 [N] without pull-up resistor, 1: PT1 [N] with pull-up resistor, system reset is 0.

PT1 [1] PT1 [0] can be as external interrupt sources. Interrupt mode is controlled by E1M, E0M. 00:

negative edge, 01: positive edge, 10&11: interrupt when change.

PT1 has Schmitt-trigger input

11.3.2 I/O Port2 (PT2)

Address

Name

Content

024H

PT2

PT2 [7:0]

025H

PT2EN

PT2EN [7:0]

026H

PT2PU

PT2PU [7:0]

027H

PT2MR

BPE2

BPE1

OPC1

OPC0

BPS PMPS

PT2PU[7:0]

PT2EN[7:0]

PT2[7:0]

LOAD

Write

AR==24h

READ&AR==24h

Databus[7:0]

PT2 is I/O ports with pull-up resistor enable control.

PT2EN [N] =0: PT2 [N] is as input port, 1: PT2 [N] is as output port, system reset is 0.

BPE2 =1 & PT2EN [7]=1: PT2 [7] as buzzer output. BPE1=1 & PT2EN [6]=1: PT2 [6] as inverter buzzer

output. BPS=1: buzzer frequency=4kHz, BPS=0 buzzer frequency=2.7kHz.

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