HT66F13 datasheet(89/173 Pages) HOLTEK

89 / 173 page

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.

CTM

Name

TM No.

TM Input Pin

TM Output Pin

HT66F13/HT66F14

¾¾¾

HT66F15

10-bit ETM

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.

Rev. 1.10

February 9, 2011

HT66F13/HT66F14/HT66F15

Enhanced A/D Flash Type MCU

C C R P

C C R A

T n C C L R

C o m p a r a t o r P M a t c h

C o m p a r a t o r A M a t c h

T n C K 2 ~ T n C K 0

T n O N

T n P A U

b 7 ~ b 9

3 - b i t C o m p a r a t o r P

1 0 - b i t

C o m p a r a t o r A

C o u n t e r

C l e a r

1 0 - b i t U p / D o w n C o u n t e r

T n P F I n t e r r u p t

T n A F

I n t e r r u p t

T P n A P i n

I n p u t / O u t p u t

b 0 ~ b 9

E d g e

D e t e c t o r

T n A I O 1 , T n A I O 0

T n A M 1 , T n A M 0

T n A I O 1 , T n A I O 0

T n A P O L

T n A O C

P o l a r i t y

C o n t r o l

O u t p u t

C o n t r o l

T P n A

T C K n

1 1 1

0 0 0

0 0 1

0 1 0

0 1 1

1 0 0

1 0 1

1 1 0

f S Y S / 4

f S Y S

f H / 1 6

f H / 6 4

f T B C

R e s e r v e d

T n B F

I n t e r r u p t

T P n B P i n

I n p u t / O u t p u t

T n B M 1 , T n B M 0

T n B I O 1 , T n B I O 0

T n B P O L

T n B O C

P o l a r i t y

C o n t r o l

O u t p u t

C o n t r o l

C C R B

C o m p a r a t o r B M a t c h

1 0 - b i t

C o m p a r a t o r B

E d g e

D e t e c t o r

T n I O 1 , T n I O 0

T P n B - 0

T P n B - 1

T P n B - 2

Enhanced Type TM Block Diagram

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