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M38039G4HKP датащи(PDF) 57 Page - Renesas Technology Corp

номер детали M38039G4HKP
подробное описание детали  SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
PDF  92 Pages
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производитель  RENESAS [Renesas Technology Corp]
домашняя страница  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

M38039G4HKP датащи(HTML) 57 Page - Renesas Technology Corp

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Rev.1.10
Nov 14, 2005
Page 57 of 91
REJ03B0166-0110
3803 Group (Spec.H QzROM version)
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
Fig 47. Structure of PWM control register
Fig 48. PWM output timing when PWM register or PWM prescaler is changed
<Notes>
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:
(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)
b7
b0
PWM control register
(PWMCON: address 002B16)
PWM function enable bit
0 : PWM disabled
1 : PWM enabled
Count source selection bit
0: f(XIN) (f(XCIN) at low-speed mode)
1: f(XIN)/2 (f(XCIN)/2 at low-speed mode)
Not used
(return “0” when read)
PWM output
T
T
T2
B
C
PWM register
write signal
PWM prescaler
write signal
(Changes “H” term from “A” to “ B”.)
(Changes PWM period from “T” to “T2”.)
B
T
C
T2
=
When the contents of the PWM register or PWM prescaler have changed,
the PWM output will change from the next period after the change.
A
n1
+
2
×fXIN
()
----------------------- sec
n1
+
fXIN
()
---------------- sec



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