Pin Assignment; Pin Descriptions - Holtek BS83A04C Manual

Pin Assignment

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.
Rev. 1.00
4-Key Enhanced Touch I/O Flash MCU
VDD
PA5/KEY1
1 8
PA1/KEY2 VSS
2
7
PA3/KEY3 PA2/CTPB/SDA/ICPCK
3 6
PA4/KEY4
PA0/CTCK/INT/SCL/ICPDA
4
5
BS83A04C
8 SOP-A
VDD 1 10 VSS
PA5/KEY1 9 PA2/CTPB/SDA/ICPCK
2
PA1/KEY2 3 8 PA0/CTCK/INT/SCL/ICPDA
PA3/KEY3 7 PA6/CTCK/INT
4
PA4/KEY4 5 6 PA7/CTP
BS83A04C
10 DFN-A/MSOP-A
NC NC
1 16
VDD VSS
2 15
PA5/KEY1 PA2/CTPB/SDA/ICPCK
3 14
PA1/KEY2 PA0/CTCK/INT/SCL/ICPDA
4 13
PA3/KEY3 PA6/CTCK/INT
5 12
PA4/KEY4 PA7/CTP
6 11
NC NC
7 10
OCDSCK OCDSDA
8 9
BS83AV04C
16 NSOP-A
8
BS83A04C
March 24, 2020