HD6417641 RENESAS [Renesas Technology Corp], HD6417641 Datasheet - Page 559

• Manufacturer Part Number: HD6417641
• Manufacturer: RENESAS [Renesas Technology Corp]

This LSI has an on-chip compare match timer (CMT) consisting of a two-channel 16-bit timer.
The CMT has a16-bit counter, and can generate interrupts at set intervals.
17.1
CMT has the following features.
• Selection of four counter input clocks
• Selection of DMA transfer request or interrupt request generation on compare match
• When not in use, CMT can be stopped by halting its clock supply to reduce power
Figure 17.1 shows a block diagram of CMT.
 Any of four internal clocks (Pφ/4, Pφ/8, Pφ/16, and Pφ/64) can be selected independently
consumption.
[Legend]
CMSTR:
CMCSR:
CMCOR:
CMCNT:
for each channel.
Features
Compare match timer start register
Compare match timer control/status register
Compare match timer constant register
Compare match counter
Control circuit
Section 17 Compare Match Timer (CMT)
Figure 17.1 Block Diagram of Compare Match Timer
Pφ/4 Pφ/8 Pφ/16 Pφ/64
Clock selection
Channel 0
CMT
Module bus
Control circuit
Rev. 4.00 Sep. 14, 2005 Page 509 of 982
Section 17 Compare Match Timer (CMT)
Pφ/4 Pφ/8 Pφ/16 Pφ/64
Clock selection
Channel 1
Internal bus
REJ09B0023-0400
interface
Bus