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BS85B12-3_12 Datasheet, PDF (19/183 Pages) Holtek Semiconductor Inc – Touch Key Flash Type 8-Bit MCU with LCD/LED Driver
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BS85B12-3/BS85C20-3/BS85C20-5
Touch Key Flash MCU with LCD/LED Driver
Pin Name
Function
Register
Select
I/T
PC7
PCPU ST
PC7/PINT/
PINT
SSEG7/KEY8 SSEG7
MFI3 ST
SLCDCn —
KEY8
TKMnC1 NS
PD0/TCK2/
KEY13
PD0
TCK2
KEY13
PDPU ST
TM2C0 ST
TKMnC1 NS
PD1
PD1/KEY14
KEY14
PDPU ST
TKMnC1 NS
PD2
PD2/KEY15
KEY15
PDPU ST
TKMnC1 NS
PD3
PD3/KEY16
KEY16
PDPU ST
TKMnC1 NS
PD4
PD4/KEY17
KEY17
PDPU ST
TKMnC1 NS
PD5
PD5/KEY18
KEY18
PDPU ST
TKMnC1 NS
PD6
PD6/KEY19
KEY19
PDPU ST
TKMnC1 NS
PD7
PD7/KEY20
KEY20
PDPU ST
TKMnC1 NS
PE0/PINT/
SSEG14
PE0
PINT
SSEG14
PEPU ST
MFI3 ST
SLCDCn —
PE1
PEPU ST
PE1/TP2_0/ TP2_0
PCK/SSEG15 PCK
TMPCn ST
SIMC0 —
SSEG15 SLCDCn —
PE2
PEPU ST
PE2/TP2_1/ TP2_1
SCS/SSEG16 SCS
TMPCn ST
SIMC0 ST
SSEG16 SLCDCn —
PE3
PEPU ST
PE3/SCK/
SCK
SCL/SSEG17 SCL
SIMC0 ST
SIMC0 ST
SSEG17 SLCDCn —
PE4
PEPU ST
PE4/SDI/
SDI
SDA/SSEG18 SDA
SIMC0 ST
SIMC0 ST
SSEG18 SLCDCn —
PE5/SDO/
SSEG19
PE5
SDO
SSEG19
PEPU ST
SIMC0 ST
SLCDCn —
KEY9
KEY9
—
NS
KEY10
KEY10
—
NS
KEY11
KEY11
—
NS
KEY12
KEY12
—
NS
O/T
Description
CMOS General purpose I/O. Register enabled pull-up.
— Peripheral interrupt input
LCD Software controlled LCD SEG
— Touch key input
CMOS General purpose I/O. Register enabled pull-up.
— Timer Module 2 input
— Touch key input
CMOS General purpose I/O. Register enabled pull-up.
— Touch key input
CMOS General purpose I/O. Register enabled pull-up.
— Touch key input
CMOS General purpose I/O. Register enabled pull-up.
— Touch key input
CMOS General purpose I/O. Register enabled pull-up.
— Touch key input
CMOS General purpose I/O. Register enabled pull-up.
— Touch key input
CMOS General purpose I/O. Register enabled pull-up.
— Touch key input
CMOS General purpose I/O. Register enabled pull-up.
— Touch key input
CMOS General purpose I/O. Register enabled pull-up.
— Peripheral interrupt input
LCD Software controlled LCD SEG
CMOS General purpose I/O. Register enabled pull-up.
CMOS TM2 I/O
CMOS Peripheral Clock Output
LCD Software controlled LCD SEG
CMOS General purpose I/O. Register enabled pull-up.
CMOS TM2 I/O
CMOS SPI select
LCD Software controlled LCD SEG
CMOS General purpose I/O. Register enabled pull-up.
CMOS SPI serial clock
NMOS I2C clock
LCD Software controlled LCD SEG
CMOS General purpose I/O. Register enabled pull-up.
— SPI data input
NMOS I2C data I/O
LCD Software controlled LCD SEG
CMOS General purpose I/O. Register enabled pull-up.
CMOS SPI data output
LCD Software controlled LCD SEG
— Touch key input
— Touch key input
— Touch key input
— Touch key input
Rev. 1.20
19
August 10, 2012
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