Rev. 1.00
8
March 24, 2020
Rev. 1.00
9
March 24, 2020
BS83A04C
4-Key Enhanced Touch I/O Flash MCU
BS83A04C
4-Key Enhanced Touch I/O Flash MCU
Pin Assignment
PA5/KEY1
VDD
PA1/KEY2
PA3/KEY3
PA2/CTPB/SDA/ICPCK
PA0/CTCK/INT/SCL/ICPDA
VSS
PA4/KEY4
BS83A04C
8 SOP-A
1
2
3
4
8
7
6
5
VDD
PA2/CTPB/SDA/ICPCK
BS83A04C
10 DFN-A/MSOP-A
10
9
8
7
6
1
2
3
4
5
PA4/KEY4
PA5/KEY1
PA3/KEY3
PA1/KEY2
PA0/CTCK/INT/SCL/ICPDA
VSS
PA6/CTCK/INT
PA7/CTP
NC
PA6/CTCK/INT
BS83AV04C
16 NSOP-A
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
VDD
PA5/KEY1
PA1/KEY2
PA3/KEY3
PA4/KEY4
OCDSCK
NC
PA0/CTCK/INT/SCL/ICPDA
PA2/CTPB/SDA/ICPCK
PA7/CTP
OCDSDA
NC
NC
VSS
Note: 1. If the pin-shared pin functions have multiple outputs simultaneously, the desired pin-shared
function is determined by the corresponding software control bits.
2. The 16-pin NSOP package type is only for OCDS EV chips. The OCDSDA and OCDSCK
pins are the OCDS dedicated pins.
3. For less pin-count package types there will be unbonded pins which should be properly
configured to avoid unwanted current consumption resulting from floating input conditions.
Refer to the “Standby Current Considerations” and “Input/Output Ports” sections.
Pin Descriptions
With the exception of the power pins, all pins on the device can be referenced by their Port name, e.g.
PA0, PA1 etc., which refer to the digital I/O function of the pins. However, these Port pins are also
shared with other function such as the Touch Key function, Timer Module pins etc. 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.
As the Pin Description table shows the situation for the package with the most pins, not all pins in
the table will be available on smaller package sizes.