BS83B08A-3/BS83B12A-3/BS83B16A-3
BS83B08A-4/BS83B12A-4/BS83B16A-4
8-Bit Touch Key Flash MCU
BS83B16A-3/BS83B16A-4
Bit
Register
Name
7
6
5
4
3
2
1
0
PAWU
PAPU
PA
D7
D7
D7
D7
D7
D7
D7
D7
D7
D7
—
—
D4
D4
D4
D4
D4
D4
D4
D4
D4
D4
Dꢃ
Dꢃ
Dꢃ
Dꢃ
Dꢃ
Dꢃ
Dꢃ
Dꢃ
Dꢃ
Dꢃ
Dꢁ
Dꢁ
Dꢁ
Dꢁ
Dꢁ
Dꢁ
Dꢁ
Dꢁ
Dꢁ
Dꢁ
D1
D1
D1
D1
D1
D1
D1
D1
D1
D1
D0
D0
D0
D0
D0
D0
D0
D0
D0
D0
—
—
—
—
PAC
PBPU
PB
—
—
D6
D6
D6
D6
D6
D6
D5
D5
D5
D5
D5
D5
PBC
PCPU
PC
PCC
Pull-high Resistors
Manyꢀproductꢀapplicationsꢀrequireꢀpull-highꢀresistorsꢀforꢀtheirꢀswitchꢀinputsꢀusuallyꢀrequiringꢀtheꢀ
useꢀofꢀanꢀexternalꢀresistor.ꢀToꢀeliminateꢀtheꢀneedꢀforꢀtheseꢀexternalꢀresistors,ꢀallꢀI/Oꢀpins,ꢀwhenꢀ
configuredꢀasꢀanꢀinputꢀhaveꢀtheꢀcapabilityꢀofꢀbeingꢀconnectedꢀtoꢀanꢀinternalꢀpull-highꢀresistor.ꢀTheseꢀ
pull-highꢀresistorsꢀareꢀselectedꢀusingꢀregistersꢀPAPU~PCPU,ꢀandꢀareꢀimplementedꢀusingꢀweakꢀ
PMOSꢀtransistors.
PAPU Register
Bit
7
D7
R/W
0
6
5
4
D4
R/W
0
3
Dꢃ
R/W
0
2
Dꢁ
R/W
0
1
D1
R/W
0
0
D0
R/W
0
Name
R/W
—
—
—
—
—
—
POR
Bitꢀ7ꢀ
I/OꢀPortꢀAꢀbitꢀ7ꢀPull-HighꢀControl
0:ꢀDisable
1:ꢀEnable
Bitꢀ6~5ꢀ
Bitꢀ4~0ꢀ
Unimplemented,ꢀreadꢀasꢀ“0”
I/OꢀPortꢀAꢀbitꢀ4~bitꢀ0ꢀPull-HighꢀControl
0:ꢀDisable
1:ꢀEnable
PBPU Register
Bit
Name
R/W
7
D7
R/W
0
6
D6
R/W
0
5
D5
R/W
0
4
D4
R/W
0
3
Dꢃ
R/W
0
2
Dꢁ
R/W
0
1
D1
R/W
0
0
D0
R/W
0
POR
Bitꢀ7~0ꢀ
I/OꢀPortꢀBꢀbitꢀ7~bitꢀ0ꢀPull-HighꢀControl
0:ꢀDisable
1:ꢀEnable
Rev. 1.00
57
�aꢀ 0ꢁꢂ ꢁ01ꢃ
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
