BS85B12-3 HOLTEK [Holtek Semiconductor Inc], BS85B12-3 Datasheet - Page 16

• Manufacturer Part Number: BS85B12-3
• Description: Touch Key Flash Type 8-Bit MCU with LCD/LED Driver
• Manufacturer: HOLTEK [Holtek Semiconductor Inc]

Note:
Rev. 1.00
PE0/PINT/
SSEG14
PE1/TP2_0/
PCK/SSEG15
PE2/TP2_1/
SCS/SSEG16
PE3/SCK/
SCL/SSEG17
PE4/SDI/
SDA/SSEG18
PE5/SDO/
SSEG19
KEY9
KEY10
KEY11
KEY12
VDD
VSS
Pin Name
I/T: Input type
O/T: Output type
Register Select: Indicates register which selects alternative function
PWR: Power
ST: Schmitt Trigger input
CMOS: CMOS output
NMOS: NMOS output
LCD: LCD COM or SEG Vbias output
NS: Non-standard input or output
The pins in the table reflect that of the package with the largest number of pins. For this reason not all pins may
exist on all package types.
PE0
PINT
SSEG14
PE1
TP2_0
PCK
SSEG15
PE2
TP2_1
SCS
SSEG16
PE3
SCK
SCL
SSEG17
PE4
SDI
SDA
SSEG18
PE5
SDO
SSEG19
KEY9
KEY10
KEY11
KEY12
VDD
VSS
Function
Touch Key Flash MCU with LCD/LED Driver
Register
SLCDCn
SLCDCn
SLCDCn
SLCDCn
SLCDCn
SLCDCn
TMPCn
TMPCn
SIMC0
SIMC0
SIMC0
SIMC0
SIMC0
SIMC0
SIMC0
Select
PEPU
PEPU
PEPU
PEPU
PEPU
PEPU
MFI3
PWR
PWR
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
NS
NS
NS
NS
I/T
CMOS General purpose I/O. Register enabled pull-up.
CMOS General purpose I/O. Register enabled pull-up.
CMOS
CMOS
CMOS General purpose I/O. Register enabled pull-up.
CMOS
CMOS
CMOS General purpose I/O. Register enabled pull-up.
CMOS
NMOS
CMOS General purpose I/O. Register enabled pull-up.
NMOS
CMOS General purpose I/O. Register enabled pull-up.
CMOS SPI data output
LCD
LCD
LCD
LCD
LCD
LCD
O/T
10
Peripheral interrupt input
Software controlled LCD SEG
TM2 I/O
Peripheral Clock Output
Software controlled LCD SEG
TM2 I/O
SPI select
Software controlled LCD SEG
SPI serial clock
I
Software controlled LCD SEG
SPI data input
I
Software controlled LCD SEG
Software controlled LCD SEG
Touch key input
Touch key input
Touch key input
Touch key input
Power supply
Ground
2
2
C clock
C data I/O
BS85B12-3/BS85C20-3
Description
February 1, 2011