m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 146

• Manufacturer Part Number: m37905
• Description: Mitsubishi 16-bit Single-chip Microcomputer 7700 Family / 7900 Series
• Manufacturer: Renesas Electronics Corporation.

7.6.2 Trigger
When a trigger is generated, the TAi
can be selected as that trigger.
An internal trigger is selected when the trigger select bits (bits 4 and 3 at addresses 56
DA
A trigger generated during PWM pulse output is invalid, and it does not affect the pulse output operation.
(1) When selecting internal trigger
(2) When selecting external trigger
16
) are “00
A trigger is generated when “1” is written to the count start bit (addresses 40
A trigger is generated at the falling edge of the TAi
56
acceptableonly when the count start bit is “1.”
When using an external trigger, set the port P6, port P2, and port P4 direction registers’ bits which
correspond to the TAi
16
to 5A
2
” or “01
16
, D6
16
2
”; an external trigger is selected when these bits are “10
to DA
IN
16
pins for the input mode.
is “0,” or at its rising edge when bit 3 is “1.” However, the trigger input is
OUT
7905 Group User’s Manual Rev.1.0
pin starts to output PWM pulses. An internal or an external trigger
7.6 Pulse width modulation (PWM) mode
IN
pin’s input signal when bit 3 at addresses
2
” or “11
16
, 41
16
2
TIMER A
.”
16
to 5A
).
16
, D6
7-43
16
to