Compact Type Tm - Ctm; Compa�T Tm �Pe�Ation - Holtek TinyPower HT69F40A Manual

TinyPower
Compact Type TM – CTM
Although the simplest form of the three TM types, the Compact TM type still contains three
operating modes, which are Compare Match Output, Timer/Event Counter and PWM Output modes.
The Compact TM can also be controlled with an external input pin and can drive one or two external
output pins. These two external output pins can be the same signal or the inverse signal.
Device
HT69F30A
HT69F40A
HT69F�0A
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
f 1 0 0
S U B
R e s e r v e d 1 0 1
1 1 0
T C K n 1 1 1
T n O N
T n P A U
T n C K 2 ~ T n C K 0
Compact TM Operation
At its core is a 10-bit count-up counter which is driven by a user selectable internal or external clock
source. There are also two internal comparators with the names, Comparator A and Comparator
P. These comparators will compare the value in the counter with CCRP and CCRA registers. The
CCRP is three bits wide whose value is compared with the highest three bits in the counter while the
CCRA is the ten bits and therefore compares 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 Compact
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 an output pin. All operating setup conditions are
selected using relevant internal registers.
Rev. 1.20
HT69F30A/HT69F40A/HT69F50A
I/O Flash 8-Bit MCU with LCD & EEPROM
TM
TM Type TM Name.
10-�it CTM TM0
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 C l e a r
1 0 - b i t C o u n t - u p C o u n t e r
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
C C R A
Compact Type TM Block Diagram (n=0)
102
TM Input Pin TM Output Pin
TCK0 TP0_0� TP0_1
T n P F I n t e r r u p t
T n O C
O u t p u t P o l a r i t y
0
C o n t r o l C o n t r o l
1
T n M 1 , T n M 0 T n P O L
T n I O 1 , T n I O 0
T n A F I n t e r r u p t
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T P n _ 0
T P n P i n
O u t p u t
T P n _ 1