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Rev. 1.20
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Rev. 1.20
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HT69F30A/HT69F40A/HT69F50A
TinyPower
TM
I/O Flash 8-Bit MCU with LCD & EEPROM
HT69F30A/HT69F40A/HT69F50A
TinyPower
TM
I/O Flash 8-Bit MCU with LCD & EEPROM
Enhanced Type TM – ETM
The Enhanced Type TM contains five operating modes, which are Compare Match Output,
Timer/Event Counter, Capture Input, Single Pulse Output and PWM Output modes. The Enhanced
TM can also be controlled with an external input pin and can drive three or four external output pins.
Device
TM Type
TM Name.
TM Input Pin
TM Output Pin
HT69F30A
—
—
—
—
HT69F40A
HT69F�0A
10-�it ETM
TM1
TCK1
TP1A;
TP1B_0� TP1B_1� TP1B_2�
Enhanced TM Operation
At its core is a 10-bit count-up/count-down counter which is driven by a user selectable internal
or external clock source. There are three internal comparators with the names, Comparator A,
Comparator B and Comparator P. These comparators will compare the value in the counter with the
CCRA, CCRB and CCRP registers. The CCRP comparator is 3-bits wide whose value is compared
with the highest 3-bits in the counter while CCRA and CCRB are 10-bits wide and therefore
compared with all counter bits.
The only way of changing the value of the 10-bit counter using the application program, is to
clear the counter by changing the TnON bit from low to high. The counter will also be cleared
automatically by a counter overflow or a compare match with one of its associated comparators.
When these conditions occur, a TM interrupt signal will also usually be generated. The Enhanced
Type TM can operate in a number of different operational modes, can be driven by different clock
sources including an input pin and can also control output pins. All operating setup conditions are
selected using relevant internal registers.
Enhanced Type TM Block Diagram (n=1)