Renesas H8S/2111B Manual de usuario Pagina 250

  • Descarga
  • Añadir a mis manuales
  • Imprimir
  • Pagina
    / 582
  • Tabla de contenidos
  • MARCADORES
  • Valorado. / 5. Basado en revisión del cliente
Vista de pagina 249
Rev. 1.00, 05/04, page 216 of 544
10.10 Usage Notes
10.10.1 Conflict between TCNT Write and Counter Clear
If a counter clear signal is generated during the T
2
state of a TCNT write cycle as shown in figure
10.14, clearing takes priority and the counter write is not performed.
φ
Address TCNT address
Internal write signal
Counter clear signal
TCNT
Note: * TMR_A, TMR_B
N
H'00
T
1
T
2
T
3
*
TCNT write cycle by CPU
Figure 10.14 Conflict between TCNT Write and Clear
10.10.2 Conflict between TCNT Write and Count-Up
If a count-up occurs during the T
2
state of a TCNT write cycle as shown in figure 10.15, the
counter write takes priority and the counter is not incremented.
Note: * TMR_A, TMR_B
T
1
T
2
T
3
*
φ
Address TCNT address
Internal write signal
TCNT input clock
TCNT N M
TCNT write cycle by CPU
Counter write data
Figure 10.15 Conflict between TCNT Write and Count-Up
Vista de pagina 249
1 2 ... 245 246 247 248 249 250 251 252 253 254 255 ... 581 582

Comentarios a estos manuales

Sin comentarios