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3886 Datasheet(PDF) 229 Page - Renesas Technology Corp

Part # 3886
Description  8-BIT SINGLE-CHIP MICROCOMPUTER
PDF  380 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

3886 Datasheet(HTML) 229 Page - Renesas Technology Corp

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3886 Group User’s Manual
APPLICATION
2-112
2.6 PWM
Fig. 2.6.9 Relevant registers setting
Outline: • Control of VS tuner by using the 14-bit resolution PWM0 output function
• f(XIN) = 8 MHz
PWM control register 1 (address 2E16)
PCTL1
1
Enable PWM0 output
Note: The PWM0 output function has priority even when
the bit corresponding to P56 pin of port P5 direction
register is set to the input mode.
PWM0H register (address 3016)
Set high-order 8 bits (N) of 14-bit data to be output
PWM0H
Note: Depending on data (N) of the high-order 8 bits, the period (250
✕ N) of “H” level during the sub-period (64
µs) is determined.
PWM0L register (address 3116)
Set low-order 6 bits (m) of 14-bit data to be output
PWM0L
Note: Depending on data (m) of the low-order 6 bits, the number of
sub-period to which the ADD bit is to be added within the
repetitive cycle consisting of 64 sub-periods is determined.
When output data is written to the PWM0L register, bit 7 of this
register becomes “1”. When completing to transfer data from
the PWM0L register to the PWM0 latch, bit 7 becomes “0”.
AD/DA control register (address 3416)
ADCON
0
Select P56/PWM01 output pin



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