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FUJITSU MB91460 SERIES FR60 User Manual

Page 34

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18

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