HD6417618 RENESAS [Renesas Technology Corp], HD6417618 Datasheet - Page 347

• Manufacturer Part Number: HD6417618
• Description: 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7618 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

This LSI has an on-chip compare match timer (CMT) consisting of a 2-channel 16-bit timer. The
CMT has a16-bit counter, and can generate interrupts at set intervals.
13.1
CMT has the following features.
• Selection of four counter input clocks
• Interrupt request on compare match
• When not in use, CMT can be stopped by halting its clock supply to reduce power
Figure 13.1 shows a block diagram of CMT.
TIMCMT3A_000020030900
Any of four internal clocks (Pφ/8, Pφ/32, Pφ/128, and Pφ/512) can be selected independently
for each channel.
consumption.
[Legend]
CMSTR:
CMCSR:
CMCOR:
CMCNT:
CMI:
Features
Control circuit
Compare match timer start register
Compare match timer control/status register
Compare match timer constant register
Compare match counter
Compare match interrupt
Section 13 Compare Match Timer (CMT)
CMI0
Figure 13.1 Block Diagram of Compare Match Timer
Pφ/8
Clock selection
Pφ/32
Channel 0
Pφ/128
Module bus
CMT
Pφ/512
Control circuit
CMI1
Rev. 6.00 Jun. 12, 2007 Page 315 of 610
Section 13 Compare Match Timer (CMT)
Pφ/8
Clock selection
Pφ/32
Channel 1
Pφ/128
Internal bus
Pφ/512
REJ09B0131-0600
interface
Bus