PFS122
8bit MTP MCU with 12-bit R-Type ADC
Pin Type &
Buffer Type
Pin Name
Description
The functions of this pin can be:
(1) Bit 7 of port A. It can be configured as digital input or two-state output, with
pull-high / pull-low resistor.
IO
PA7 /
X1
ST /
(2) X1 is Crystal XIN(X1) when crystal oscillator is used.
CMOS
If this pin is used for crystal oscillator, bit 7 of padier register must be programmed “0”
to avoid leakage current. This pin can be used to wake-up system during sleep mode;
however, wake-up function is also disabled if bit 7 of padier register is “0”.
The functions of this pin can be:
(1) Bit 6 of port A. It can be configured as digital input or two-state output, with
pull-high / pull-low resistor.
IO
PA6 /
X2
ST /
(2) X2 is Crystal XOUT(X2) when crystal oscillator is used.
If this pin is used for crystal oscillator, bit 6 of padier register must be programmed “0”
to avoid leakage current. This pin can be used to wake-up system during sleep mode;
however, wake-up function is also disabled if bit 6 of padier register is “0”.
CMOS
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PDK-DS-PFS122-EN_V000-May 28, 2020
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