Renesas R8C/20 User Manual

R8C/20 Group, R8C/21 Group 14. Timers
Rev.2.00 Aug 27, 2008 Page 119 of 458
REJ09B0250-0200
NOTE:
1. The underflow interrupt can be set to channel 1.
Table 14.1 Functional Comparison of Timers
Item Timer RA Timer RB Timer RD Timer RE
Configuration 8-bit timer with
8-bit prescaler
(with reload
register)
8-bit timer with
8-bit prescaler
(with reload
register)
16-bit free-run timer X 2
(with input capture and
output compare)
4-bit counter
8-bit counter
Count Decrement Decrement Increment / Decrement Increment
Count Sources • f1
•f2
•f8
• fOCO
•f1
•f2
•f8
•Timer RA
underflow
•f1
•f2
•f4
•f8
•f32
•fOCO40M
• TRDIOA0
•f4
•f8
•f32
Function Timer mode provided provided provided
(input capture function,
output compare function)
not provided
Pulse output mode provided not provided not provided not provided
Event counter mode provided not provided not provided not provided
Pulse width
measurement mode
provided not provided not provided not provided
Pulse period
measurement mode
provided not provided not provided not provided
Programmable
waveform generation
mode
not provided provided not provided not provided
Programmable one-
shot generation
mode
not provided provided not provided not provided
Programmable wait
one-shot generation
mode
not provided provided not provided not provided
Input capture mode not provided not provided provided not provided
Output compare
mode
not provided not provided provided provided
PWM mode not provided not provided provided not provided
Reset synchronized
PWM mode
not provided not provided provided not provided
Complementary
PWM mode
not provided not provided provided not provided
PWM3 mode not provided not provided provided not provided
Input Pin TRAIO
INT0
INT0, TRDCLK
TRDIOA0, TRDIOA1,
TRDIOB0, TRDIOB1,
TRDIOC0, TRDIOC1,
TRDIOD0, TRDIOD1
-
Output Pin TRAO
TRAIO
TRBO TRDIOA0, TRDIOA1,
TRDIOB0, TRDIOB1,
TRDIOC0, TRDIOC1,
TRDIOD0, TRDIOD1
TREO
Related Interrupt Timer RA int
INT1
int
Timer RB int
INT0 int
Compare match / input
capture A0 to D0 int
Compare match / input
capture A1 to D1 int
Overflow int
Underflow int
(1)
INT0 int
Timer RE int
Timer Stop provided provided provided provided

Renesas R8C/20 Specifications

General

Brand	Renesas
Model	R8C/20
Category	Control Unit
Language	English