NEC PD754144 - Manual (Page 149)

CHAPTER 6 PERIPHERAL HARDWARE FUNCTION
149 User’s Manual U10676EJ3V0UM
Figure 6-38. PWM Pulse Generator Operating Configuration
Note This is the IRQT2 set signal. It is only set when TMOD2 matches T2.
Figure 6-39. PWM Pulse Generator Operating Timing
Timer counter (channel 2) operation and carrier clock
(Modulo register H (TMOD2H) = 1, modulo register (TMOD2) = k)
Count pulse
(CP)
Timer counter
count register
(T2)
TOUT F/F Set
Timer start command
0 1 2 i–1 1 0 1 2 k–1 k 0 1 2 3
Timer counter (channel 2)
High level period setting
timer counter modulo
register (TMOD2H)
Timer counter (Channel 2)
modulo register (TMOD2)
MPX
Comparator
INTT2 Note
Internal
clock
CP
TOUT F/F PTO2
Timer counter count
register (T2)
Clear
MPX
Coinci-
dence
f x
f x /2
f x /2 4
f x /2 6
f x /2 8
f x /2 10