Rev. 1.71
60
April 11, 2017
Rev. 1.71
61
April 11, 2017
HT66F002/HT66F0025/HT66F003/HT66F004
Cost-Effective A/D Flash MCU with EEPROM
HT66F002/HT66F0025/HT66F003/HT66F004
Cost-Effective A/D Flash MCU with EEPROM
Pin-shared Registers
The limited number of supplied pins in a package can impose restrictions on the amount of functions
a certain device can contain. However by allowing the same pins to share several different functions
and providing a means of function selection, a wide range of different functions can be incorporated
into even relatively small package sizes.
•
PASR Register – HT66F002/HT66F0025
Bit
7
6
5
4
3
2
1
0
Name
PAS7
PAS6
PAS5
PAS4
PAS3
PAS2
PAS1
PAS0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
POR
0
0
0
0
0
0
0
0
Bit 7~6
PAS7~PAS6
: Pin-Shared Control Bits
00: PA5/INT
01: STP0B
10: PA5/INT
11: AN3
Bit 5~4
PAS5~PAS4:
Pin-Shared Control Bits
00: PA2/INT
01: STP0
10: VREFO
11: AN2
Bit 3~2
PAS3~PAS2:
Pin-Shared Control Bits
00: PA1
01: STP0B
10: VREF
11: AN1
Bit 1~0
PAS1~PAS0:
Pin-Shared Control Bits
00: PA0/STP0I
01: STP0
10: PA0/STP0I
11: AN0
