Renesas H8S/2111B Manual de usuario Pagina 189

  • Descarga
  • Añadir a mis manuales
  • Imprimir
  • Pagina
    / 582
  • Tabla de contenidos
  • MARCADORES
  • Valorado. / 5. Basado en revisión del cliente
Vista de pagina 188
Rev. 1.00, 05/04, page 155 of 544
8.4.1 PWM Setting Example
: Pulse added
1-conversion cycle
Combination of the basic pulse and added pulse outputs 0/256 to 255/256 of dudty cycle as low ripple wave form.
Duty cycle
Basic
waveform
Additiona
pulse
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
127/256
128/256
129/256
130/256
PWDR
setting example
H'7F
H'80
H'81
H'82
112 pulses
128 pulses
128 pulses
128 pulses
15 pulses
0 pulses
1 pulse
2 pulses
Figure 8.3 Example of PWM Setting
8.4.2 Diagram of PWM Used as D/A Converter
Figure 8.4 shows the diagram example when using the PWM pulse as the D/A converter. Analog
signal with low ripple can be generated by connecting the low pass filter.
This LSI
Low pass filter Reference value
Resistor : 120 k
Capacitor : 0.1 µF
Figure 8.4 Example when PWM is Used as D/A Converter
Vista de pagina 188
1 2 ... 184 185 186 187 188 189 190 191 192 193 194 ... 581 582

Comentarios a estos manuales

Sin comentarios