SH7041A datasheet(311/923 Pages) RENESAS

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Section 12 Multifunction Timer Pulse Unit (MTU)

12.1

Overview

The SuperH microprocessor has an on-chip 16-bit multifunction timer pulse unit (MTU) with five

channels of 16-bit timers.

12.1.1

Features

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

• Has sixteen timer general registers (TGR): four each for channels 0, 3, and 4, and two each for

channels 1 and 2 that can be set to function independently as output compare or input capture.

The channel 0, 3, and 4 TGRC and TGRD registers can be used as buffer registers.

• Can select eight 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 twelve-phase PWM output. (With channels

0–2 set to PWM mode 2, channels 3–4, and channels 0–4 synchronized with TGR3A of

channel 3 as the sync register (channels 0–4 phase output: 4, 2, 2, 2, 2).)

• Channels 0, 3, and 4 can be set for buffer operation

 Input capture register double buffer configuration possible

 Output compare register automatic re-write possible

• Channels 1 and 2 can be independently set to the phase counting mode

 Two-phase encoder pulse up/down count possible

• Cascade connection operation

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

overflow/underflow

• Channels 3 and 4 can be set in the following modes:

 Reset-synchronized PWM mode: By combining channels 3 and 4, a sawtooth wave

comparator type six-phase PWM waveform can be output.

SH7041A Datasheet(PDF) 311 Page - Renesas Technology Corp