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MB9AF131KB Datasheet(PDF) 7 Page - SPANSION |
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MB9AF131KB Datasheet(HTML) 7 Page - SPANSION |
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7 / 89 page  D a t a S h e e t 4 MB9A130LB_DS706-00066-2v0-E, June 9, 2015 CONFIDENTIAL Watchdog Timer (2channels) A watchdog timer can generate interrupts or a reset when a time-out value is reached. This series consists of two different watchdogs, a Hardware watchdog and a Software watchdog. Hardware watchdog timer is clocked by built-in Low-speed CR oscillator. Therefore, Hardware watchdog is active in any low power consumption mode except RTC and Stop and Deep Standby RTC and Deep Standby Stop modes. Clock and Reset [Clocks] Five clock sources (2 external oscillators, 2 built-in CR oscillators, and Main PLL) that are dynamically selectable. Main Clock: 4 MHz to 20 MHz Sub Clock: 32.768 kHz Built-in High-speed CR Clock: 4 MHz Built-in Low-speed CR Clock: 100 kHz Main PLL Clock [Resets] Reset requests from INITX pin Power on reset Software reset Watchdog timers reset Low voltage detector reset Clock supervisor reset Clock Super Visor (CSV) Clocks generated by built-in CR oscillators are used to supervise abnormality of the external clocks. If external clock failure (clock stop) is detected, reset is asserted. If external frequency anomaly is detected, interrupt or reset is asserted. Low Voltage Detector (LVD) This Series include 2-stage monitoring of voltage on the VCC. When the voltage falls below the voltage has been set, Low Voltage Detector generates an interrupt or reset. LVD1: error reporting via interrupt LVD2: auto-reset operation Low Power Consumption Mode Six low power consumption modes supported. Sleep Timer RTC Stop Deep Standby RTC Deep Standby Stop Back up register is 16 bytes. |
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