m37516e6hp Renesas Electronics Corporation., m37516e6hp Datasheet - Page 43
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m37516e6hp
Manufacturer Part Number
m37516e6hp
Description
Single-chip 8-bit Cmos Microcomputer
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.M37516E6HP.pdf
(92 pages)
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7516 Group
Fig. 42 Structure of PWM control register
Fig. 43 PWM output timing when PWM register or PWM prescaler is changed
The PWM starts after the PWM function enable bit is set to enable and “L” level is output from the PWM pin.
The length of this “L” level output is as follows:
Rev.1.01
Note
b 7
P W M o u t p u t
2 • f(X
P W M r e g i s t e r
w r i t e s i g n a l
P W M p r e s c a l e r
w r i t e s i g n a l
Jul 01, 2003
f(X
n+1
n+1
IN
IN
)
When the contents of the PWM register or PWM prescaler have changed, the PWM
output will change from the next period after the change.
)
sec
sec
b 0
page 41 of 89
P W M c o n t r o l r e g i s t e r
( P W M C O N : a d d r e s s 0 0 1 D
P W M f u n c t i o n e n a b l e b i t
C o u n t s o u r c e s e l e c t i o n b i t
N o t u s e d ( r e t u r n “ 0 ” w h e n r e a d )
0 : f ( X
1 : f ( X
0 : P W M d i s a b l e d
1 : P W M e n a b l e d
(Count source selection bit = 0, where n is the value set in the prescaler)
(Count source selection bit = 1, where n is the value set in the prescaler)
I N
I N
) ( f ( X
) / 2 ( f ( X
A
C I N
C I N
) a t l o w - s p e e d m o d e )
) / 2 a t l o w - s p e e d m o d e )
T
1 6
)
(Changes “H” term from “A” to “B”.)
(Changes PWM period from “T” to “T2”.)
B
T
C
T2
B
T
=
T 2
C