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C2000™ 32-bit MCU Family

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GPIO<br />

XRSn<br />

WDRSn<br />

Watchdog<br />

Pull-Up<br />

Glitch<br />

Filter<br />

Voltage Regulator and Reset System<br />

NMIRSn<br />

RSn<br />

Output Buffer - Power<br />

Good Signal. Prevents<br />

Output Glitches On Digital<br />

I/Os During Power-Up.<br />

NMI<br />

Watchdog<br />

NMI<br />

Interrupt<br />

CPU<br />

PGIO<br />

PBRSn<br />

Power-On<br />

Reset & Brown-<br />

Out Detector.<br />

Monitors 3.3V &<br />

1.9V Supply.<br />

POR/<br />

BOR<br />

On Clock Failure Detection, NMI<br />

Interrupt Is Generated First. If CPU<br />

Does Not Respond Within Selected<br />

Period, Then Reset Is Generated.<br />

CLOCKFAILn<br />

SYSRSn<br />

VREG<br />

Reset To All<br />

Peripherals.<br />

CPU<br />

+<br />

Memories<br />

+<br />

Digital<br />

Peripherals<br />

Analog<br />

Peripherals<br />

3.3V +/-10%<br />

VDDIO<br />

VDD<br />

VSS<br />

~1.9V<br />

3.3V +/-10%<br />

VDDA<br />

VSSA<br />

• Lower System Cost<br />

– On-chip regulator eliminates<br />

requirement for external 1.8V rail<br />

– BOR/POR protection eliminates<br />

requirement for external<br />

supervisor<br />

• Increased System Reliability<br />

– Eliminates any start-up glitches<br />

on PWM outputs<br />

27

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