H8S2138 Datasheet, PDF (387/1061 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2100 Series

Section 12 8-Bit Timers
12.4 Interrupt Sources
The TMR0, TMR1, and TMRY 8-bit timers can generate three types of interrupt: compare-match
A and B (CMIA and CMIB), and overflow (OVI). TMRX can generate only an ICIX interrupt. An
interrupt is requested when the corresponding interrupt enable bit is set in TCR or TCSR.
Independent signals are sent to the interrupt controller for each interrupt. It is also possible to
activate the DTC by means of CMIA and CMIB interrupts from TMR0, TMR1, and TMRY.
An overview of 8-bit timer interrupt sources is given in tables 12.4 to 12.6.
Table 12.4 TMR0 and TMR1 8-Bit Timer Interrupt Sources
Interrupt source
CMIA
CMIB
OVI
Description
Requested by CMFA
Requested by CMFB
Requested by OVF
DTC Activation
Possible
Possible
Not possible
Interrupt Priority
High
Low
Table 12.5 TMRX 8-Bit Timer Interrupt Source
Interrupt source
ICIX
Description
Requested by ICF
DTC Activation
Not possible
Table 12.6 TMRY 8-Bit Timer Interrupt Sources
Interrupt source
CMIA
CMIB
OVI
Description
Requested by CMFA
Requested by CMFB
Requested by OVF
DTC Activation
Possible
Possible
Not possible
Interrupt Priority
High
Low
Rev. 4.00 Jun 06, 2006 page 333 of 1004
REJ09B0301-0400