SH7760 Datasheet, PDF (559/1345 Pages) Renesas Technology Corp – SuperHTM RISC engine

Section 15 Timer Unit (TMU)
This LSI includes an on-chip 32-bit timer unit (TMU) which has three channels (channels 0 to 2).
15.1 Features
The TMU has the following features.
• Auto-reload type 32-bit down-counter provided for each channel
• Input capture function provided in channel 2
• Selection of rising edge or falling edge as external clock input edge when external clock is
selected or input capture function is used for each channel
• 32-bit timer constant register for auto-reload use, readable/writable at any time, and 32-bit
down-counter provided for each channel
• Selection of six counter input clocks for each channel
External clock (TCLK), five peripheral clocks (Pck/4, Pck/16, Pck/64, Pck/256, and Pck/1024)
(Pck is the peripheral clock)
• Two interrupt sources
One underflow source (each channel) and one input capture source (channel 2)
• DMAC data transfer request capability
In channel 2, a data transfer request is sent to the DMAC when an input capture interrupt is
generated.
Rev. 1.0, 02/03, page 509 of 1294