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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
16-bit STM Register Definitions – HT69F50A
•
TM2C0 Register
Bit
7
6
5
4
3
2
1
0
Name
T2PAU
T2CK2
T2CK1
T2CK0
T2�N
—
—
—
R/W
R/W
R/W
R/W
R/W
R/W
—
—
—
P�R
0
0
0
0
0
—
—
—
Bit 7
T2PAU:
TM2 Counter Pause Control
0: Run
1: Pause
The counter can be paused by setting this bit high. Clearing the bit to zero restores
normal counter operation. When in a Pause condition the TM will remain powered up
and continue to consume power. The counter will retain its residual value when this bit
changes from low to high and resume counting from this value when the bit changes
to a low value again.
Bit 6~4
T2CK2, T2CK1, T2CK0:
Select TM2 Counter clock
000: f
SYS
/4
001: f
SYS
010: f
H
/16
011: f
H
/64
100: f
SUB
101: Reserved
110: TCK2 rising edge clock
111: TCK2 falling edge clock
These three bits are used to select the clock source for the TM2. Selecting the
Reserved clock input will effectively disable the internal counter. The external pin
clock source can be chosen to be active on the rising or falling edge. The clock source
f
SYS
is the system clock, while f
H
and f
SUB
are other internal clocks, the details of which
can be found in the oscillator section.
Bit 3
T2ON:
TM2 Counter On/Off Control
0: Off
1: On
This bit controls the overall on/off function of the TM. Setting the bit high enables the
counter to run, clearing the bit disables the TM. Clearing this bit to zero will stop the
counter from counting and turn off the TM which will reduce its power consumption.
When the bit changes state from low to high the internal counter value will be reset to
zero, however when the bit changes from high to low, the internal counter will retain
its residual value until the bit returns high again. If the TM is in the Compare Match
Output Mode then the TM output pin will be reset to its initial condition, as specified
by the T2OC bit, when the T2ON bit changes from low to high.
Bit 2~0
Unimplemented, read as “0”