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Rev. 2.50
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Rev. 2.50
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HT66F20/HT66F30/HT66F40/HT66F50/HT66F60
HT66FU30/HT66FU40/HT66FU50/HT66FU60
A/D Flash MCU with EEPROM
HT66F20/HT66F30/HT66F40/HT66F50/HT66F60
HT66FU30/HT66FU40/HT66FU50/HT66FU60
A/D Flash MCU with EEPROM
Pin-remapping Functions
The flexibility of the microcontroller range is greatly enhanced by the use of pins that have more
than one function. Limited numbers of pins can force serious design constraints on designers but
by supplying pins with multi-functions, many of these difficulties can be overcome. The way in
which the pin function of each pin is selected is different for each function and a priority order is
established where more than one pin function is selected simultaneously. Additionally there are a
series of PRM0, PRM1 and PRM2 registers to establish certain pin functions.
Pin-remapping 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. Some devices include PRM0, PRM1 or PRM2 registers
which can select the functions of certain pins.
Pin-remapping Register List
•
HT66F30
Register
Name
Bit
7
6
5
4
3
2
1
0
PRM0
—
—
—
—
—
PCPRM SIMPS0 PCKPS
•
HT66F40
Register
Name
Bit
7
6
5
4
3
2
1
0
PRM0
—
C�XPS0
—
C0XPS0 PDPRM SIMPS� SIMPS0 PCKPS
PRM� TCK2PS TCK�PS TCK0PS
—
INT�PS� INT�PS0 INT0PS� INT0PS0
PRM2
—
—
TP2�PS TP20PS TP�B2PS TP�APS TP0�PS TP00PS
•
HT66F50
Register
Name
Bit
7
6
5
4
3
2
1
0
PRM0
—
C�XPS0
—
C0XPS0 PDPRM SIMPS� SIMPS0 PCKPS
PRM� TCK2PS TCK�PS TCK0PS
—
INT�PS� INT�PS0 INT0PS� INT0PS0
PRM2 TP3�PS TP30PS TP2�PS TP20PS TP�B2PS TP�APS TP0�PS TP00PS
•
HT66F60
Register
Name
Bit
7
6
5
4
3
2
1
0
PRM0 C�XPS� C�XPS0 C0XPS� C0XPS0 PDPRM SIMPS� SIMPS0 PCKPS
PRM� TCK2PS TCK�PS TCK0PS INT2PS� INT�PS� INT�PS0 INT0PS� INT0PS0
PRM2
TP3�PS TP30PS TP2�PS TP20PS TP�B2PS TP�APS TP0�PS TP00PS