PFS154 datasheet(12/91 Pages) PADAUK

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PFS154

8bit MTP Type IO Controller

Page 12 of 91

PDK-DS-PFS154_CN_V105 –Jun. 9, 2020

Pin Name

Pin & Buffer

Type

Description

PA7 /

ST /

CMOS /

Analog

This pin can be used as:

(1) Bit 7 of port A. It can be configured as digital input or two-state output ,with

pull-up resistor by software independently

(2) X1 when crystal oscillator is used

When this pin is configured as crystal oscillator function, please use bit 7 of

be used to wake-up system during sleep mode; however, wake-up function is also

disabled if bit 7 of padier register is “0”.

PA6 /

ST /

CMOS /

Analog

This pin can be used as:

(1) Bit 6 of port A. It can be configured as digital input or two-state output, with

pull-up resistor by software independently.

(2) X2 when crystal oscillator is used.

When this pin is configured as crystal oscillator function, please use bit 6 of

be used to wake-up system during sleep mode; however, wake-up function is also

disabled if bit 6 of padier register is “0”.

PA5 /

PRSTB /

PG2PWM

ST /

CMOS

This pin can be used as:

(1) Bit 5 of port A. It can be configured as digital input or open drain output, with

pull-up resistor by software independently.

(2) Hardware reset.

(3) Output of 11-bit PWM generator PWMG2. (ICE does NOT Support.)

This pin can be used to wake-up system during sleep mode; however, wake-up

function is also disabled if bit 5 of padier register is “0”.

Please put 33Ω resistor in series to have high noise immunity when this pin is in

input mode.

PA4 /

COM3 /

CIN+ /

CIN4- /

PG1PWM

ST /

CMOS /

Analog

This pin can be used as:

(1) Bit 4 of port A. It can be configured as digital input or two-state output, with

pull-up resistor by software independently.

(2) COM3 to provide (1/2 VDD) for LCD display

(3) Plus input source of comparator.

(4) Minus input source 4 of comparator.

(5) Output of 11-bit PWM generator PWMG2

When this pin is configured as analog input, please use bit 4 of register padier to

disable the digital input to prevent current leakage. This pin can be used to

wake-up system during sleep mode; however, wake-up function is also disabled if

bit 4 of padier register is “0”.

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