Holtek BS83B24C Manual page 13

BS83B24C/BS83C40C
Touch Flash MCU
BS83C40C
Pin Name Function
PA0
SDA
PA0/SDA/SDI/RX/
SDI
XT�/ICPDA/
OCDSDA
RX
XT�
ICPDA
OCDSDA
PA1
SCK
PA1/SCK/SCL/
PTCK/KEY1
SCL
PTCK
KEY1
PA�
SCK
PA�/SCK/SCL/
SCL
SDO/TX/XT1/
ICPCK/OCDSCK
SDO
TX
XT1
ICPCK
OCDSCK
PA3
SCS
PTP
PA3/SCS/PTP/
INT/KEY�
INT
KEY�
PA4
PA4/SDO/TX/
SDO
KEY3
TX
KEY3
Rev. 1.00
OPT I/T O/T
PAWU
Gene�al p��pose I/O. Registe� ena�led p�ll-�p
PAPU ST CMOS
and wake-�p.
PAS0
PAS0
ST NMOS I
�
I�S
PAS0
ST — SPI se�ial data inp�t
I�S
PAS0
ST — UART se�ial data inp�t
I�S
PAS0 — LXT LXT oscillato� pin
— ST CMOS ICP data/add�ess
— ST CMOS OCDS data/add�ess� fo� EV chip onl�
PAWU
Gene�al p��pose I/O. Registe� ena�led p�ll-�p
PAPU ST CMOS
and wake-�p.
PAS0
PAS0
ST CMOS SPI se�ial clock
I�S
PAS0
ST NMOS I
�
I�S
PAS0 ST — PTM capt��e inp�t
PAS0
NSI — To�ch ke� inp�t 1
TKM0C1
PAWU
Gene�al p��pose I/O. Registe� ena�led p�ll-�p
PAPU ST CMOS
and wake-�p.
PAS0
PAS0
ST CMOS SPI se�ial clock
I�S
PAS0
ST NMOS I
�
I�S
PAS0 — CMOS SPI se�ial data o�tp�t
PAS0 — CMOS UART se�ial data o�tp�t
PAS0 LXT — LXT oscillato� pin
— ST — ICP clock inp�t
— ST — OCDS clock inp�t� fo� EV chip onl�
PAWU
Gene�al p��pose I/O. Registe� ena�led p�ll-�p
PAPU ST CMOS
and wake-�p.
PAS0
PAS0 ST — SPI slave select pin
PAS0 — CMOS PTM o�tp�t
PAS0
INTEG
ST — Exte�nal inte���pt
INTC0
I�S
PAS0
NSI — To�ch ke� inp�t �
TKM0C1
PAWU
Gene�al p��pose I/O. Registe� ena�led p�ll-�p
PAPU ST CMOS
and wake-�p.
PAS1
PAS1 — CMOS SPI se�ial data o�tp�t
PAS1 — CMOS UART se�ial data o�tp�t
PAS1
NSI — To�ch ke� inp�t 3
TKM0C1
13
Description
C data line
C clock line
C clock line
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