Pin Descriptions - Holtek BS86DH12C Manual

BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO

Pin Descriptions

With the exception of the power pins, all pins on the device can be referenced by their Port name, e.g.
PA0, PA1 etc., which refer to the digital I/O function of the pins. However these Port pins are also
shared with other function such as the Touch Key function, Timer Module pins etc. The function of
each pin is listed in the following table, however the details behind how each pin is configured is
contained in other sections of the datasheet.
As the Pin Description table shows the situation for the package with the most pins, not all pins in
the table will be available on smaller package sizes.
Pin Name Function
PA0
PA0/RX/CTP1/
RX
OCPVR/ICPDA/
CTP1
OCDSDA
OCPVR
ICPDA
OCDSDA
PA1
PTCK
PA1/PTCK/SCL/
OVPI1/KEY3
SCL
OVPI1
KEY3
PA2
PA2/TX/CTP1B/ TX
OCPI/ICPCK/
CTP1B
OCDSCK
OCPI
ICPCK
OCDSCK
PA3
PTPI
PA3/PTPI/SDA/
VREF/KEY4
SDA
VREF
KEY4
PA4
PA4/AN0/KEY5
AN0
KEY5
Rev. 1.00
OPT I/T O/T
PAPU
General purpose I/O. Register enabled pull-up and
PAWU ST CMOS
wake-up
PAS0
PAS0
ST — UART data receive pin
IFS0
PAS0 — CMOS CTM1 output
PAS0 AN — OCP D/A converter reference voltage input
— ST CMOS ICP data/address
— ST CMOS OCDS data/address, for EV chip only
PAPU
General purpose I/O. Register enabled pull-up and
PAWU ST CMOS
wake-up
PAS0
PAS0
ST — PTM clock input
IFS1
PAS0
ST NMOS I 2 C clock line
IFS0
PAS0 AN — OVP input 1
PAS0 NSI — Touch key input
PAPU
General purpose I/O. Register enabled pull-up and
PAWU ST CMOS
wake-up
PAS0
PAS0 — CMOS UART data transmit pin
PAS0 — CMOS CTM1 inverted output
PAS0 AN — OCP input
— ST — ICP clock
— ST — OCDS clock, for EV chip only
PAPU
General purpose I/O. Register enabled pull-up and
PAWU ST CMOS
wake-up
PAS0
PAS0
ST — PTM capture input
IFS1
PAS0
ST NMOS I 2 C data line
IFS0
PAS0 AN — A/D converter external input channel
PAS0 NSI — Touch key input
PAPU
General purpose I/O. Register enabled pull-up and
PAWU ST CMOS
wake-up
PAS1
PAS1 AN — A/D converter external input channel
PAS1 NSI — Touch key input
11
Description
October 26, 2018