Holtek BS82B12A-3 - Page 15

Rev. 1.20 14 January 23, 2015 Rev. 1.20 15 January 23, 2015
BS82B12A-3/BS82C16A-3/BS82D20A-3
Touch Key 8-Bit Flash MCU with LED/LCD Driver
BS82B12A-3/BS82C16A-3/BS82D20A-3
Touch Key 8-Bit Flash MCU with LED/LCD Driver
BS82D20A-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/
SCOM0/
KEY20
PA1
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
KEY20 TKM4C1 NSI — Touch key input
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
PAWU
PAPU
ST CMOS General purpose I/O. Register enabled pull-up and wake-up.
SDA IICC0 ST NMOS I
2
C Data
RX UCR1 ST —
UART receiver data input
PA4/INT/
TCK0/
SCOM1/
KEY19
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
KEY19 TKM4C1 NSI — Touch key input
PA7/SCL/TX
PA7
PAWU
PAPU
ST CMOS
General purpose I/O. Register enabled pull-up and wake-up.
SCL IICC0 ST NMOS I
2
C 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
PB2/SSEG2/
KEY3
PB2 PBPU ST CMOS General purpose I/O. Register enabled pull-up.
SSEG2 SLCDC1 — CMOS LCD driver output for LCD panel segment
KEY3 TKM0C1 NSI — Touch key input
PB3/SSEG3/
KEY4
PB3 PBPU ST CMOS General purpose I/O. Register enabled pull-up.
SSEG3 SLCDC1 — CMOS LCD driver output for LCD panel segment
KEY4 TKM0C1 NSI — Touch key input
PB4/SSEG4/
KEY5
PB4 PBPU ST CMOS General purpose I/O. Register enabled pull-up.
SSEG4 SLCDC1 — CMOS LCD driver output for LCD panel segment
KEY5 TKM1C1 NSI — Touch key input