HT69F30A Datasheet, PDF (116/202 Pages) Holtek Semiconductor Inc – TinyPowerTM I/O Flash 8-Bit MCU with LCD & EEPROM

HT69F30A/HT69F40A/HT69F50A
TinyPower^TM I/O Flash 8-Bit MCU with LCD & EEPROM
• TMnC1 Register - 10-bit STM
Bit
7
6
Name
R/W
POR
TnM1
R/W
0
TnM0
R/W
0
5
TnIO1
R/W
0
4
TnIO0
R/W
0
3
TnOC
R/W
0
2
TnPOL
R/W
0
1
TnDPX
R/W
0
0
TnCCLR
R/W
0
Bit 7~6
Bit 5~4
TnM1~TnM0: Select TMn Operating Mode
00: Compare Match Output Mode
01: Capture Input Mode
10: PWM Mode or Single Pulse Output Mode
11: Timer/Counter Mode
These bits setup the required operating mode for the TM. To ensure reliable operation
the TM should be switched off before any changes are made to the TnM1 and TnM0
bits. In the Timer/Counter Mode, the TM output pin control must be disabled.
TnIO1~TnIO0: Select TPn_0, TPn_1 output function
Compare Match Output Mode
00: No change
01: Output low
10: Output high
11: Toggle output
PWM Mode/Single Pulse Output Mode
00: PWM Output inactive state
01: PWM Output active state
10: PWM output
11: Single pulse output
Capture Input Mode
00: Input capture at rising edge of TPn_0, TPn_1
01: Input capture at falling edge of TPn_0, TPn_1
10: Input capture at falling/rising edge of TPn_0, TPn_1
11: Input capture disabled
Timer/counter Mode
Unused
These two bits are used to determine how the TM output pin changes state when a
certain condition is reached. The function that these bits select depends upon in which
mode the TM is running.
In the Compare Match Output Mode, the TnIO1 and TnIO0 bits determine how the
TM output pin changes state when a compare match occurs from the Comparator A.
The TM output pin can be setup to switch high, switch low or to toggle its present
state when a compare match occurs from the Comparator A. When the bits are both
zero, then no change will take place on the output. The initial value of the TM output
pin should be setup using the TnOC bit in the TMnC1 register. Note that the output
level requested by the TnIO1 and TnIO0 bits must be different from the initial value
setup using the TnOC bit otherwise no change will occur on the TM output pin when
a compare match occurs. After the TM output pin changes state it can be reset to its
initial level by changing the level of the TnON bit from low to high.
In the PWM Mode, the TnIO1 and TnIO0 bits determine how the TM output pin
changes state when a certain compare match condition occurs. The PWM output
function is modified by changing these two bits. It is necessary to only change
the values of the TnIO1 and TnIO0 bits only after the TM has been switched off.
Unpredictable PWM outputs will occur if the TnIO1 and TnIO0 bits are changed when
the TM is running.
Rev. 1.00
116
March 19, 2013