Pin Description - Holtek BS83B08-3 Manual

BS83B08-3/B12-3/B16-3/B16G-3/C24-3
8-Bit Touch Key Flash MCU

Pin Description

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.
BS83B08-3/B12-3/B16-3/B16G-3
Pin Name Function
PA0
PA0/SDI/SDA
SDI
SDA
PA1
PA1/SDO
SDO
PA2
PA2/SCK/SCL
SCK
SCL
PA3
PA3/SCS
SCS
PA4
PA4/INT
INT
PB0~PB3
PB0/KEY1~
PB3/KEY4
KEY1~KEY4
PB4~PB7
PB4/KEY5~
PB7/KEY8
KEY5~KEY8
PC0~PC3
PC0/KEY9~
PC3/KEY12
KEY9~KEY12
PC4~PC7
PC4/KEY13~
PC7/KEY16
KEY13~KEY16 TKM3C1 NSI
RES Reset pin
VDD Power supply *
VSS Ground **
Note: I/T: Input type
O/T: Output type
OPT: Optional by register selection
PWR: Power
ST: Schmitt Trigger input
CMOS: CMOS output
NMOS: NMOS output
NSI; Non-standard input
Rev. 1.50
OPT I/T O/T
PAWU General purpose I/O. Register enabled pull-up and
ST CMOS
PAPU wake-up.
SIMC0 ST SPI data input
¾
2
SIMC0 ST NMOS I C data
PAWU General purpose I/O. Register enabled pull-up and
ST CMOS
PAPU wake-up.
SIMC0 CMOS SPI data output
¾
PAWU General purpose I/O. Register enabled pull-up and
ST CMOS
PAPU wake-up.
SIMC0 ST CMOS SPI serial clock
2
SIMC0 ST NMOS I C clock
PAWU General purpose I/O. Register enabled pull-up and
ST CMOS
PAPU wake-up.
SIMC0 ST CMOS SPI slave select
PAWU General purpose I/O. Register enabled pull-up and
ST CMOS
PAPU wake-up.
INTEG ST External interrupt
¾
PBPU ST CMOS General purpose I/O. Register enabled pull-up.
TKM0C1 NSI Touch key inputs
¾
PBPU ST CMOS General purpose I/O. Register enabled pull-up.
TKM1C1 NSI Touch key inputs
¾
PCPU ST CMOS General purpose I/O. Register enabled pull-up.
TKM2C1 NSI Touch key inputs
¾
PCPU ST CMOS General purpose I/O. Register enabled pull-up.
Touch key inputs
¾
ST
¾ ¾ ¾
PWR
¾ ¾ ¾
PWR
¾ ¾ ¾
9
Description
April 28, 2020