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MB9AF154NB Datasheet(PDF) 8 Page - SPANSION |
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MB9AF154NB Datasheet(HTML) 8 Page - SPANSION |
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8 / 133 page  D a t a S h e e t April 28, 2015, MB9A150RB_DS706-00047-3v0-E 5 CONFIDENTIAL External Interrupt Controller Unit Up to 24 external interrupt input pins Include one non-maskable interrupt (NMI) input pin Watchdog Timer (Two channels) 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. The Hardware watchdog timer is clocked by the built-in Low-speed CR oscillator. Therefore, the Hardware watchdog is active in any low-power consumption modes except RTC, Stop, Deep Standby RTC and Deep Standby Stop modes. CRC (Cyclic Redundancy Check) Accelerator The CRC accelerator calculates the CRC which has a heavy software processing load, and achieves a reduction of the integrity check processing load for reception data and storage. CCITT CRC16 and IEEE-802.3 CRC32 are supported. CCITT CRC16 Generator Polynomial: 0x1021 IEEE-802.3 CRC32 Generator Polynomial: 0x04C11DB7 Clock and Reset [Clocks] Selectable from five clock sources (2 external oscillators, 2 built-in CR oscillators, and Main PLL). Main Clock: 4 MHz to 48 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 detection reset Clock Super Visor 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 includes 2-stage monitoring of voltage on the VCC pins. When the voltage falls below the voltage that has been set, Low-Voltage Detector generates an interrupt or reset. LVD1: error reporting via interrupt LVD2: auto-reset operation |
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