MK30DN512ZVLK10 Freescale Semiconductor, MK30DN512ZVLK10 Datasheet - Page 487

• Manufacturer Part Number: MK30DN512ZVLK10
• Description: ARM Microcontrollers - MCU KINETIS 512K SLCD
• Manufacturer: Freescale Semiconductor

Specifications of MK30DN512ZVLK10

• Core: ARM Cortex M4
• Processor Series: K30
• Data Bus Width: 32 bit
• Maximum Clock Frequency: 50 MHz
• Program Memory Size: 512 KB
• Data Ram Size: 128 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 1.71 V to 3.6 V
• Operating Temperature Range: - 40 C to + 105 C
• Package / Case: LQFP-80
• Mounting Style: SMD/SMT

Chapter 23
Watchdog Timer (WDOG)
23.1 Introduction
The Watchdog Timer (WDOG) keeps a watch on the system functioning and resets it in
case of its failure. Some reasons for such failures are: run-away software code and the
stoppage of the system clock that in a safety critical system can lead to serious
consequences. In such cases, the watchdog brings the system into a safe state of
operation. The watchdog monitors the operation of the system by expecting periodic
communication from the software, generally known as servicing or refreshing the
watchdog. If this periodic refreshing does not occur, the watchdog resets the system.
23.2 Features
The features of the Watchdog Timer (WDOG) include:
Freescale Semiconductor, Inc.
• Independent clock source input (independent from CPU/bus clock). Choice between
• Unlock sequence for allowing updates to write-once WDOG control/configuration
• All WDOG control/configuration bits are writable once only within 256 bus clock
two clock sources:
bits.
cycles of being unlocked.
• LPO Oscillator
• External system clock
For the chip-specific implementation details of this module's
instances see the chip configuration chapter.
K30 Sub-Family Reference Manual, Rev. 6, Nov 2011
NOTE
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