Renesas R8C/Tiny Series Instrukcja Obsługi Pobierz pdf (Strona 39)

R8C/10 Group

Rev.1.20 Jan 27, 2006 page 29 of 180

REJ09B0019-0120

Generated Interrupt Factor Bit showing interrupt factor

Oscillation stop detection (a) The OCD3 bit in the OCD register = 1

( (a) or (b) ) (b) The OCD1 to OCD0 bits in the OCD register = 112 and the

OCD2 bit = 1

Figure 6.6

Switching Clock Source From On-Chip Oscillator to Main Clock

Table 6.5

Determination of Interrupt Factor of Oscillation Stop Detection

Switch to Main clock

Verify OCD3 bit

Determine several times

1(main clock stop)

0(main clock oscillating)

Determine several times that the main clock is supplied

Set OCD2 bit to 0

(selecting main clock)

OCD3 to OCD0 bits: Bits in OCD register

End

Set OCD1 to OCD0 bits to 00

(oscillation stop detection function disabled)

6.5 Oscillation Stop Detection Function

1 2 ... 34 35 36 37 38 39 40 41 42 43 44 ... 198 199

Brak uwag

Renesas R8C/Tiny Series Instrukcja Obsługi Strona 39