EKTF6708 datasheet(113/158 Pages) EMC

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eKTF6708

8-Bit Microcontroller

IC Product Specification (V1.2) 03.12.2020

 103

(This specification is subject to change without prior notice)

again. If overflow before the edge is detected, the FFH is loaded into TCxDA and an

overflow interrupt is generated. During interrupt processing, user can determine whether

or not there is an overflow by checking if the TCxDA value is FFH. After an interrupt

(capture to TCxDA or overflow detection) is generated, capture and overflow detection are

halted until TCxDA is read out.

K-2

K-1 K 0

m-1

m m+1

n-1 n 0

FE FF 0

Clock source

Up-counter

TCx pin input

TCxDA

TCxDB

TCx Interrupt

Reading TCxDA

FF (overflow)

capture

overflow

Figure 6-14b Capture Mode Waveform

6.9.4 Programmable Divider Output Mode and Pulse Width

Modulation Mode

Data Bus

8-bit up counter

TCxDB

Comparator

TCxCR

TCxCK2~0

TCxS

MUX

match

toggle

TCx interrupt

PWMx,PDOx pin

TCxFF

TCxM2~0=101

F/F

clear

fc/2

TCxDA

Comparator

match

TCxM2~0=10x

TCxDB_buffer1

TCxDA_buffer1

TCxDB_buffer2

TCxDA_buffer2

Write TCxDA[0]

Figure 6-15a PDO/PWM Mode Block Diagram



Programmable Divider Output (PDO)

In Programmable Divider Output (PDO) mode, counting up is performed using the internal

clock. The contents of TCxDA are compared with the contents of the up- counter. The F/F

output is toggled and the counter is cleared each time a match is found. The F/F output is

inverted and output to PDO pin. This mode can generate 50% of the duty pulse output.

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