MITSUBISHI MICROCOMPUTERS
M37754M8C-XXXGP, M37754M8C-XXXHP
M37754S4CGP, M37754S4CHP
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Therefore, if the low-order 8 bits of the reload register are n, the pe-
high-order 8 bits of the reload register are m, the duration “H” of pulse
is
riod of the generated pulse is
1
× (n+1) × m.
1
selected clock frequency
× (n+1).
selected clock frequency
The high-order 8 bits function as an 8-bit length pulse width modula-
tor using this pulse as input. The operation is the same as for 16-bit
length pulse width modulator except that the length is 8 bits. If the
And the output pulse period is
1
× (n+1) × (28–1).
selected clock frequency
16
1/Pfi × (2 – 1)
Selected clock
source Pfi
TAiIN
(rising edge)
This trigger is not accepted
1/Pfi × (m)
TAiOUT
Example when the contents of the reload register is 000316
Fig. 33 16-bit length pulse width modulator output pulse example
8
1/Pfi × (n + 1) × (2 – 1)
Selected clock
source Pfi
TAiIN
(falling edge)
1/Pfi × (n + 1)
Prescaler output
(when n = 2)
1/Pfi × (n + 1) × (m)
8-bit length pulse
width modulator
output
(when m = 2)
Fig. 34 8-bit length pulse width modulator output pulse example
32
RENESAS [ RENESAS TECHNOLOGY CORP ]
