Enhanced Type Tm - Etm - Holtek HT66F20 Manual

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.
ETM Name
HT66F20
HT66F30 �0-bit ETM
HT66F40 �0-bit ETM
HT66F50 �0-bit ETM
HT66F60 �0-bit ETM
f / 4 0 0 0
S Y S
f
0 0 1
S Y S
f / 1 6 0 1 0
H
f / 6 4 0 1 1
H
1 0 - b i t U p / D o w n C o u n t e r
f
1 0 0
T B C
R e s e r v e d
1 0 1
1 1 0
T n O N
T C K n 1 1 1
T n P A U
T n C K 2 ~ T n C K 0
Rev. 2.50
HT66F20/HT66F30/HT66F40/HT66F50/HT66F60
HT66FU30/HT66FU40/HT66FU50/HT66FU60
TM No. TM Input Pin
— — —
� TCK�
� TCK�
� TCK�
� TCK�
C C R P
C o m p a r a t o r P M a t c h
3 - b i t C o m p a r a t o r P
b 7 ~ b 9
C o u n t e r
0
C l e a r
1
T n C C L R
b 0 ~ b 9
C o m p a r a t o r A M a t c h
1 0 - b i t
C o m p a r a t o r A
T n A I O 1 , T n A I O 0
C C R A
E d g e
D e t e c t o r
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
C C R B
E d g e
D e t e c t o r
T n B I O 1 , T n B I O 0
Enhanced Type TM Block Diagram (n=1)
�44
A/D Flash MCU with EEPROM
TM Output Pin
—
TP�A; TP�B_0� TP�B_�
TP�A� TP�B_0� TP�B_�� TP�B_2
TP�A� TP�B_0� TP�B_�� TP�B_2
TP�A� TP�B_0� TP�B_�� TP�B_2
T n P F I n t e r r u p t
T n A O C
O u t p u t P o l a r i t y T P n A P i n
C o n t r o l
C o n t r o l I n p u t / O u t p u t
T n A M 1 , T n A M 0 T n A P O L
T n A I O 1 , T n A I O 0
T n A F
I n t e r r u p t
T n B O C
O u t p u t P o l a r i t y T P n B P i n
C o n t r o l C o n t r o l I n p u t / O u t p u t
T n B F
I n t e r r u p t
T n B M 1 , T n B M 0 T n B P O L
T n B I O 1 , T n B I O 0
T P n A
T P n B - 0
T P n B - 1
T P n B - 2
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