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Chapter 2 MB91460 Rev.A/Rev.B Overview
2.Features
• Prescaler value for 32 kHz is 001FFF
H
• Clock monitor (clock output function): 1 channel
• Clock supervisor
• Monitors external 32kHz and 4MHz for fails (e.g. crystal breaks)
• Switches in case of fail to an available recovery clock (subclock or RC clock)
• Clock modulator (reduction of EME)
• Subclock calibration
• Calibration of the RTC timer in 32 kHz or RC oscillator operation, based on the more accurate 4 MHz
quartz is possible
• Main oscillation stabilisation timer
• 23 bit counter for main oscillation stabilisation wait when running in sub clock mode
• Generates an interrupt when stabilisation time has elapsed
• Sub oscillation stabilisation timer
• 15 bit counter for sub oscillation stabilisation wait when running in main clock mode
• Generates an interrupt when stabilisation time has elapsed
• Low-consumption modes: SLEEP/Sub-Run/RTC/STOP function
• Package: BGA660-03EK (Evaluation device MB91V460)
• CMOS 0.35um technology (Evaluation device MB91V460)
• Power supply (Evaluation device MB91V460):
• Single power supply 3.3V
• Single power supply 5V