THREE-PHASE WAVEFORM MODE
10.2 Block description
10.2.2 Dead-time timer register
Figure 10.2.3 shows the structure of the Dead-time timer register.
b7
b0
Dead-time timer (Address A716
Bit
)
Function
At reset R/W
Undefined WO
Note: Use the MOVMB (MOVM when m = 1) or STAB (STA when m = 1) instruction for writing to this register.
7 to 0 A value in the range from “0016” to “FF16” can be set.
Additionally, make sure writing to this register does not overlap with a trigger-occurrence timing of the dead-time timer.
Fig. 10.2.3 Structure of dead-time timer register
The dead-time timer is used to count the time to prevent “L” level of positive waveform outputs from
overlapping with “L” level of their negative waveform outputs. (This time is referred to as “dead time.”)
Figure 10.2.4 shows the structure of the dead-time timer.
Dead-time timer register
(Address A716)
(Common to 3
dead-time timers)
Dead-time timer reload register
Clock-source-of-dead-time-timer
select bits
Timer A2
Timer A1
Timer A0
(Bits 7, 6 at address A816
)
Trigger
f
2
1/2
Dead-time timer
Dead-time timer
Dead-time timer
1/2
Trigger
Trigger
Fig. 10.2.4 Structure of dead-time timer
7905 Group User’s Manual Rev.1.0
10-7
RENESAS [ RENESAS TECHNOLOGY CORP ]
