Panasonic MN101L Series User Manual

Panasonic MN101L Series User Manual Manual pdf 157 page image

Chapter 4Clock/ Mode/ Voltage ControlMode Control Function IV - 154.2.1 NORMAL Mode Transition from SLOW to NORMALWhen the transition from SLOW to NORMAL, the oscillation stabilization wait for HCLK is ensured by hard-ware. Figure:4.2.2 shows the transition procedure to NORMAL. The transition to NORMAL through IDLE canbe allowed, when HCLK must be stable in IDLE as shown in Figure:4.2.3.Figure:4.2.2 Transition Flow from SLOW to NORMAL..Until entering NORMAL mode since the CPUM is set to transmit to NORMAL mode,SYSCLK is generated from SCLK...Figure:4.2.3 Transition Flow from SLOW to NORMAL through IDLETransition to NORMAL mode(Set the CPUM as described in Table 4.1.3.)SLOW modeNORMAL modeAutomatic high-speed oscillationstabilization wait time by hardwareNO(Transition to OSC mode)YES(Transition to RC mode)Start the external high-speed oscillationHCLKCNT.HOSCCNT = 1HCLKCNT.HCLKSEL == 0Internal high-speed oscillationstabillization wait timeStart the internal high-speed oscillationHCLKCNT.HRCCNT = 1SLOW modeNORMAL modeTransition to IDLE mode(Set the CPUM as described in Table 4.1.3.)Transition ot NORMAL mode(Set the CPUM as described in Table 4.1.3.)External high-speed oscillationstabillization wait time