BS2824 Holtek Semiconductor Inc., BS2824 Datasheet - Page 4

• Manufacturer Part Number: BS2824
• Description: Touch Key Mcu
• Manufacturer: Holtek Semiconductor Inc.

BS2824/BS2854/BS2868
Touch Key MCU
Pin Description
Rev. 1.00
KEY0~KEY3
PA5/OSC2
PA6/OSC1
Pin Name
PA7/RES
PA1/PFD
PA2/TC0
PA4/TC1
BS2824
PA3/INT
CREF
VDD
SCD
VSS
PA0
Note:
I/T: Input type
O/T: Output type
OPT: Optional by configuration option (CO) or register option
PWR: Power
CO: Configuration option
ST: Schmitt Trigger input
CMOS: CMOS output
NMOS: NMOS output
The important point to note here is that the PB0 and PB1 pads will not be bounded to pins in the
16-pin NSOP package. These two pads default to an input state, the designer should set the register
PBPU to pull high options. In this way, these two internal pads can be pulled up in order to prevent
input pin floating power consumption.
Function
OSC2
OSC1
Keyn
PFD
RES
VDD
VSS
SCD
PA0
PA1
PA2
TC0
PA3
PA4
TC1
PA5
PA6
PA7
Cref
INT
CTRL0
PAWK
PAWK
PAWK
PAWK
PAWK
PAWK
PAWK
PAWK
PAPU
PAPU
PAPU
PAPU
PAPU
PAPU
PAPU
OPT
CO
CO
CO
PWR
PWR
OSC
SP
SP
I/T
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
CMOS General purpose I/O. Register enabled pull-up and wake-up.
CMOS General purpose I/O. Register enabled pull-up and wake-up.
CMOS PFD output
CMOS General purpose I/O. Register enabled pull-up and wake-up.
CMOS General purpose I/O. Register enabled pull-up and wake-up.
CMOS General purpose I/O. Register enabled pull-up and wake-up.
CMOS General purpose I/O. Register enabled pull-up and wake-up.
CMOS General purpose I/O. Register enabled pull-up and wake-up.
NMOS General purpose I/O. Register enabled wake-up.
NMOS Serial communication I/O line with pull-high
OSC
O/T
External Timer 0 clock input
External interrupt input
External Timer 1 clock input
Oscillator pin
Oscillator pin
Reset input
Power supply
Ground
Touch pad inputs
Touch key reference capacitor
4
Description
January 27, 2010