BS82B12A-3 Datasheet, PDF (12/170 Pages) Holtek Semiconductor Inc – Touch Flash MCU with LED/LCD Driver

BS82B12A-3/BS82C16A-3/BS82D20A-3
Touch Flash MCU with LED/LCD Driver
Pin Descriptions
With the exception of the power pins and some relevant transformer control 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 Modules, etc. The function of each pin is listed in the following tables, 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.
BS82B12A-3
Pin Name Function OP
I/T O/T
Description
PA0/TCK1/
SCOM2/
ICPDA/
OCDSDA
PA0
PAWU
PAPU
ST CMOS General purpose I/O. Register enabled pull-up and wake-up.
TCK1 PTM0C0 ST
— PTM0 clock input
SCOM2 SLCDC0 — SCOM LCD driver output for LCD panel common
ICPDA
—
ST CMOS In-circuit programming address/data pin
OCDSDA —
ST CMOS On-chip debug support data/address pin, for EV chip only.
PA1
PA1/SCOM0
PAWU
PAPU
ST CMOS General purpose I/O. Register enabled pull-up and wake-up.
SCOM0 SLCDC0 — SCOM LCD driver output for LCD panel common
PA2/
SCOM3/
ICPCK/
OCDSCK
PA2
PAWU
PAPU
ST CMOS General purpose I/O. Register enabled pull-up and wake-up.
SCOM3 SLCDC0 — SCOM LCD driver output for LCD panel common
ICPCK
—
ST
— In-circuit programming clock pin
OCDSCK —
ST
— On-chip debug support clock pin, for EV chip only.
PA3/SDA/
RX
PA3
SDA
PAWU
PAPU
IICC0
ST CMOS General purpose I/O. Register enabled pull-up and wake-up.
ST NMOS I²C Data
RX
UCR1 ST
— UART receiver data input
PA4/INT/
TCK0/
SCOM1
PA4
PAWU
PAPU
ST CMOS General purpose I/O. Register enabled pull-up and wake-up.
INT
INTC0
INTEG
ST
— External interrupt
TCK0 CTM0C0 ST
— CTM0 clock input
SCOM1 SLCDC0 — SCOM LCD driver output for LCD panel common
PA7
PA7/SCL/TX _SCL
PAWU
PAPU
IICC0
ST CMOS General purpose I/O. Register enabled pull-up and wake-up.
ST NMOS I²C Clock
TX
UCR1 — CMOS UART transmitter data output
PB0/
SSEG0/
KEY1
PB0
PBPU ST CMOS General purpose I/O. Register enabled pull-up.
SSEG0 SLCDC1 — CMOS LCD driver output for LCD panel segment
KEY1 TKM0C1 NSI — Touch key input
PB1/
SSEG1/
KEY2
PB1
PBPU ST CMOS General purpose I/O. Register enabled pull-up.
SSEG1 SLCDC1 — CMOS LCD driver output for LCD panel segment
KEY2 TKM0C1 NSI — Touch key input
Rev. 1.60
12
December 15, 2016