TTP259-ASFN datasheet(35/81 Pages) TONTEK

35 / 81 page

Preliminary

TTP259

TonTouch

2015/05/25

Page 35 of 81

Ver: 1.1

for TCP2. At the same time, interrupt request flag TCPxF will set activated, if

software enables the corresponding interrupt enable bit, INT hardware will

cause MCU interrupt service routine.

.Counter

Counter feature is implemented only by TCPxLD=0, the TCPxD can be zero

or not that depends on software needs. User starts and stops the counter by

changing the TCPxEN bit value. On the save side, reading the counter value

after stopping the count by disable TCPxEN=0, if reading the counter value

during value changing that means clock in happening at the same time. The

reading of counter value may disrupt for transient state. If 8-bit counter is not

enough for counting, user can enable the interrupt and using the data RAM as

software counter for extending the counter stage.

Figure: 8-bit Timer/Counter (TCP1)

Figure: 12-bit Timer/Counter/PWM (TCP2)

TCP1S1

TCP1S0

TCP1LD

TCP1EN

TCP1OV

TCP1I

TBCK

TB1OV

Timer/Counter

Preload Data

Data Bus

PWMx Circuit

TCP2S1

TCP2S0

TCP2LD

TCP2EN

TCP2OV

OSCH

TBCK

TCP1OV

Timer/Counter

Preload Data

Data Bus

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