PFS122 datasheet(14/93 Pages) PADAUK

14 / 93 page

PFS122

8bit MTP MCU with 12-bit R-Type ADC

Page 14 of 93

PDK-DS-PFS122-EN_V000-May 28, 2020

Pin Name

Pin Type &

Buffer Type

Description

PB7 /

AD7 /

CIN5- /

TM3PWM

ST /

CMOS /

Analog

The functions of this pin can be:

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

/ pull-low resistor by software independently.

(2) Channel 7 of ADC analog input

(3) Minus input source 5 of comparator

(4) PWM output from Timer3

When this pin is configured as analog input, please use bit 7 of register pbdier to

disable the digital input to prevent current leakage. The bit 7 of pbdier register can

be set to “0” to disable digital input; wake-up from power-down by toggling this pin is

also disabled.

PB6 /

AD6 /

CIN4- /

TM3PWM

ST /

CMOS /

Analog

The functions of this pin can be:

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

/ pull-low resistor by software independently.

(2) Channel 6 of ADC analog input

(3) Minus input source 4 of comparator

(4) PWM output from Timer3

When this pin is configured as analog input, please use bit 6 of register pbdier to

disable the digital input to prevent current leakage. The bit 6 of pbdier register can

be set to “0” to disable digital input; wake-up from power-down by toggling this pin is

also disabled.

PB5 /

AD5 /

INT0 /

TM3PWM

ST /

CMOS /

Analog

The functions of this pin can be:

(1) Bit 5 of port B. It can be configured as digital input, two-state output with pull-high

/ pull-low resistor by software independently.

(2) Channel 5 of ADC analog input

(3) External interrupt line 0. It can be used as an external interrupt line 0. Both rising

edge and falling edge are accepted to request interrupt service and configurable

by register setting.

(4) PWM output from Timer3

When this pin is configured as analog input, please use bit 5 of register pbdier to

disable the digital input to prevent current leakage. The bit 5 of pbdier register can

be set to “0” to disable digital input; wake-up from power-down by toggling this pin is

also disabled.

PB4 /

AD4 /

TM2PWM

ST /

CMOS /

Analog

The functions of this pin can be:

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

/ pull-low resistor by software independently.

(2) Channel 4 of ADC analog input

(3) PWM output from Timer2

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

disable the digital input to prevent current leakage. The bit 4 of pbdier register can

be set to “0” to disable digital input; wake-up from power-down by toggling this pin is

also disabled.

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