MPC2F35L datasheet(12/46 Pages) MEGAWIN

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MPC2F35_USB Data Sheet

MEGAWIN

TM0

FTM0_UV Frequency

00H

Invalid

01H

93.75 KHz

02H

62.5 KHz

…

FFH

732.42 Hz

General Purpose I/O Ports

Port 0

Address

Name

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

00D0H

P0_BUF

BP07

BP06

BP05

BP04

BP03

BP02

BP01

BP00

√

00D8H

P07

P06

P05

P04

P03

P02

P01

P00

√

0240H

P0_CR

CP07

CP06

CP05

CP04

CP03

CP02

CP01

CP00

√

0241H

P0_MR

MP05

MP04

MP01

MP00

√

Port 0 is an 8-bit I/O port; each pin can be programmed as input or output individually.

P0_BUF: Port 0 output buffer. When P0.n is configured as an output pin, it outputs the content

of P0_BUF.n.

P0: Values on the pin of Port 0 while reading from Port 0.

P0_CR: Configure P0.0 ~ P0.7 to be input or output individually. 0: Input (default), 1: Output

P0_MR: Configure the output mode of P0.0 ~ P0.7 with a 17k ohm pull-high resistor, CMOS or

NMOS open drain

−

MP00 (P0_MR.0): P0.0 ~ P0.3 with the pull-high control bit, 0: Disable (default), 1:Enable

−

MP01 (P0_MR.1): P0.0 ~ P0.3 with the CMOS or NMOS selector, 0: CMOS (default), 1: NMOS

−

MP04 (P0_MR.4): P0.4 ~ P0.7 with the pull-high control bit, 0: Disable (default), 1: Enable

−

MP05 (P0_MR.5): P0.4 ~ P0.7 with the CMOS or NMOS selector, 0: CMOS (default), 1: NMOS

At initial reset, Port 0 is all in the input mode. Each pin of Port 0 can be specified as the input or output

mode independently by the P0_CR SFR. When Port 0 is used as the output port, CMOS or NMOS

open drain output type can be selected by the P0_MR register. Port 0 has 17k ohm internal pull-high

resistors that can be enabled/disabled by specifying the MP00 and MP04 in the P0_MR register

respectively. The pull-high resistor is automatically disabled only when the port is configured as CMOS

output. Schmitt trigger circuit is added in the input path of P0.0~P0.3. User should be carefully on

setting pin as input with no pull high resistor since this setting has potential to cause leakage.

When P0.4 and P0.5 are set as input pins, they are INT0 and INT1 interrupt sources. A falling edge at

the two pins will set the corresponding bits in the IRQ_ST register to 1, and the external interrupt

subroutines will be executed if the corresponding bits in the IRQ_EN register are also set.

Port 1

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