HT67F60 datasheet(121/242 Pages) HOLTEK

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HT67F30/HT67F40/HT67F50/HT67F60

TinyPowerTM A/D Flash Type 8-Bit MCU with LCD & EEPROM

Rev. 1.50

120

March 06 , 2012

Rev. 1.50

121

March 06 , 2012

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TM2C1 Register - 16-bit STM

Bit

Name

T2M1

T2M0

T2IO1

T2IO0

T2OC

T2POL

T2DPX

T2CCLR

R/W

POR

Bit 7~6

T2M1~T2M0: Select TM2 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 T2M1 and T2M0

bits. In the Timer/Counter Mode, the TM output pin control must be disabled.

Bit 5~4

T2IO1~T2IO0: Select TP2_0, TP2_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 TP2_0, TP2_1

01: Input capture at falling edge of TP2_0, TP2_1

10: Input capture at falling/rising edge of TP2_0, TP2_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 T2IO1 and T2IO0 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 T2OC bit in the TM2C1 register. Note that the output

level requested by the T2IO1 and T2IO0 bits must be different from the initial value

setup using the T2OC 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 T2ON bit from low to high.

In the PWM Mode, the T1IO1 and T1IO0 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 T1IO1 and T1IO0 bits only after the TM has been switched off.

Unpredictable PWM outputs will occur if the T1IO1 and T1IO0 bits are changed when

the TM is running.

Bit 3

T2OC: TP2_0, TP2_1 Output control bit

Compare Match Output Mode

0: Initial low

1: Initial high

HT67F60 Datasheet(PDF) 121 Page - Holtek Semiconductor Inc

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