HT68F14 HOLTEK [Holtek Semiconductor Inc], HT68F14 Datasheet - Page 51

• Manufacturer Part Number: HT68F14
• Description: Enhanced I/O Flash Type MCU
• Manufacturer: HOLTEK [Holtek Semiconductor Inc]

HT68F13/HT68F14/HT68F15
Enhanced I/O Flash Type MCU
Input/Output Ports
Rev. 1.10
Register
Register
I/O Register List
PAWU
PAWU
Name
PAPU
PBPU
PCPU
Name
PAPU
PBPU
PCPU
PDPU
PAC
PBC
PCC
PAC
PBC
PCC
PDC
PC
PC
PD
PA
PB
PA
PB
HT68F13
HT68F14
Holtek microcontrollers offer considerable flexibility on their I/O ports. With the input or output
designation of every pin fully under user program control, pull-high selections for all ports and
wake-up selections on certain pins, the user is provided with an I/O structure to meet the needs of a
wide range of application possibilities.
The device provides bidirectional input/output lines labeled with port names PA~PD. These I/O ports
are mapped to the RAM Data Memory with specific addresses as shown in the Special Purpose Data
Memory table. All of these I/O ports can be used for input and output operations. For input operation,
these ports are non-latching, which means the inputs must be ready at the T2 rising edge of instruction
²MOV A,[m]², where m denotes the port address. For output operation, all the data is latched and
remains unchanged until the output latch is rewritten.
D7
D7
D7
D7
D7
D7
D7
D7
D7
D7
D7
D7
D7
D7
¾
¾
¾
¾
¾
¾
¾
¾
¾
7
7
D6
D6
D6
D6
D6
D6
D6
D6
D6
D6
D6
D6
D6
D6
¾
¾
¾
¾
¾
¾
¾
¾
¾
6
6
D5
D5
D5
D5
D5
D5
D5
D5
D5
D5
D5
D5
D5
D5
¾
¾
¾
¾
¾
¾
¾
¾
¾
5
5
51
D4
D4
D4
D4
D4
D4
D4
D4
D4
D4
D4
D4
D4
D4
¾
¾
¾
¾
¾
¾
¾
¾
¾
4
4
Bit
Bit
D3
D3
D3
D3
D3
D3
D3
D3
D3
D3
D3
D3
D3
D3
D3
D3
D3
¾
¾
¾
¾
¾
¾
3
3
D2
D2
D2
D2
D2
D2
D2
D2
D2
D2
D2
D2
D2
D2
D2
D2
D2
¾
¾
¾
¾
¾
¾
2
2
D1
D1
D1
D1
D1
D1
D1
D1
D1
D1
D1
D1
D1
D1
D1
D1
D1
D1
D1
D1
D1
D1
D1
1
1
February 9, 2011
D0
D0
D0
D0
D0
D0
D0
D0
D0
D0
D0
D0
D0
D0
D0
D0
D0
D0
D0
D0
D0
D0
D0
0
0