E62655RUSB Renesas Electronics America, E62655RUSB Datasheet - Page 575

• Manufacturer Part Number: E62655RUSB
• Description: EMULATOR BASE H8S/2655R W/USB
• Manufacturer: Renesas Electronics America
• Type: Microcontrollerr

Specifications of E62655RUSB

• Contents: E6000 Emulator Unit and 4 Logic Probes
• For Use With/related Products: H8S/2655R
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

12.1
The H8S/2655 Group includes an 8-bit timer module with two channels (TMR0 and TMR1). Each
channel has an 8-bit counter (TCNT) and two time constant registers (TCORA and TCORB) that
are constantly compared with the TCNT value to detect compare match events. The 8-bit timer
module can thus be used for a variety of functions, including pulse output with an arbitrary duty
cycle.
12.1.1
The features of the 8-bit timer module are listed below.
Selection of four clock sources
The counters can be driven by one of three internal clock signals ( /8, /64, or /8192) or an
external clock input (enabling use as an external event counter).
Selection of three ways to clear the counters
The counters can be cleared on compare match A or B, or by an external reset signal.
Timer output control by a combination of two compare match signals
The timer output signal in each channel is controlled by a combination of two independent
compare match signals, enabling the timer to generate output waveforms with an arbitrary duty
cycle or PWM output.
Provision for cascading of two channels
Three independent interrupts
Compare match A and B and overflow interrupts can be requested independently.
Operation as a 16-bit timer is possible, using channel 0 for the upper 8 bits and channel 1
for the lower 8 bits (16-bit count mode).
Channel 1 can be used to count channel 0 compare matches (compare match count mode).
Overview
Features
Section 12 8-Bit Timers
Rev. 5.00 Sep 14, 2006 page 545 of 1060
Section 12 8-Bit Timers
REJ09B0331-0500