HD6412320 RENESAS [Renesas Technology Corp], HD6412320 Datasheet - Page 587
HD6412320
Manufacturer Part Number
HD6412320
Description
Renesas 16-Bit Single-Chip Microcomputer H8S Family H8S-2300 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6412320.pdf
(1302 pages)
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12.1
The chip 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.
• Seleyction of four clock sources
• Seleyction of three ways to clear the counters
• Timyer output control by a combination of two compare match signals
• Provision for cascading of two channels
• Three independent interrupts
• A/D converter conversion start trigger can be generated
• Module stop mode can be set
The counters can be driven by one of three internal clock signals (φ/8, φ/64, or φ/8192) or an
external clock input (enabling use as an external event counter)
The counters can be cleared on compare match A or B, or by an external reset signal
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
⎯ Operation as a 16-bit timer is possible, using channel 0 for the upper 8 bits and channel 1
⎯ Channel 1 can be used to count channel 0 compare matches (compare match count mode)
Compare match A and B and overflow interrupts can be requested independently
Channel 0 compare match A signal can be used as an A/D converter conversion start trigger
As the initial setting, 8-bit timer operation is halted. Register access is enabled by exiting
module stop mode
for the lower 8 bits (16-bit count mode)
Overview
Features
Section 12 8-Bit Timers
Rev.6.00 Sep. 27, 2007 Page 557 of 1268
Section 12 8-Bit Timers
REJ09B0220-0600
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