MB9B510R datasheet(9/129 Pages) SPANSION

9 / 129 page

D a t a S h e e t

MB9B510R-DS706-00025-3v1-E, March 31, 2015

CONFIDENTIAL

 External Interrupt Controller Unit

・Up to 16 external interrupt input pin

・Include one non-maskable interrupt (NMI)

 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.

"Hardware" watchdog timer is clocked by low-speed internal CR oscillator. Therefore, "Hardware"

watchdog is active in any power consumption mode except Stop mode.

 CRC (Cyclic Redundancy Check) Accelerator

The CRC accelerator helps a verify data transmission or storage integrity.

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]

Five clock sources (2 external oscillators, 2 internal CR oscillator, and Main PLL) that are dynamically

selectable.

・Main Clock:

4 MHz to 48 MHz

・Sub Clock:

32.768 kHz

・High-speed internal CR Clock:

4 MHz

・Low-speed internal 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 internal CR oscillators are used to supervise abnormality of the external clocks.

・External OSC clock failure (clock stop) is detected, reset is asserted.

・External OSC frequency anomaly is detected, interrupt or reset is asserted.

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