SH7018 datasheet(111/431 Pages) RENESAS

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Section 8 Multifunction Timer Pulse Unit (MTU)

8.1

Overview

The SH7018 has an on-chip 16-bit multifunction timer pulse unit (MTU) with three channels of

16-bit timers.

8.1.1

Features

• Can process a maximum of six different pulse outputs and inputs.

• Has eight timer general registers (TGR), four for channel 0 and two each for channels 1 and 2,

that can be set to function independently as output compare registers or (except for TGR0B

and TGR0D of channel 0) as input capture registers. The channel 0 TGRC and TGRD registers

can be used as buffer registers.

• Can select six counter input clock sources for all channels

• All channels can be set for the following operating modes:

 Compare match waveform output: 0 output/1 output/toggle output selectable.

 Input capture function: Selectable rising edge, falling edge, or both rising and falling edge

detection.

 Counter clearing function: Counters can be cleared by a compare-match or input capture.

 Synchronizing mode: Two or more timer counters (TCNT) can be written to

simultaneously. Two or more timer counters can be simultaneously cleared by a compare-

match or input capture. Counter synchronization functions enable synchronized register

input/output.

 PWM mode: PWM output can be provided with any duty cycle. When combined with the

counter synchronizing function, enables up to four-phase* PWM output.

Note:

* When channels 0 to 2 are set to PWM mode 1

• Channel 0 can be set for buffer operation

 Input capture register double buffer configuration possible

 Output compare register automatic re-write possible

• Cascade connection operation

 Can be operated as a 32-bit counter by using the channel 2 input clock for channel 1

overflow/underflow

• High speed access via internal 16-bit bus

• Eleven interrupt sources

 Channel 0 has two dual-function compare-match/input capture interrupts, two compare-

match interrupts, and one overflow interrupt, which can be requested independently.

SH7018 Datasheet(PDF) 111 Page - Renesas Technology Corp