MC9S12A256MPVE datasheet by Freescale Semiconductor

MC9S12A256MPVE Frequently Asked Questions (FAQs)

• What is the maximum operating frequency of the MC9S12A256MPVE?
  The maximum operating frequency of the MC9S12A256MPVE is 25 MHz, but it can be overclocked to 30 MHz with careful consideration of power consumption and thermal management.
• How do I configure the internal clock source?
  The internal clock source can be configured using the SYNR and REFS registers in the Clock Generation Module (CGM). The SYNR register sets the clock source, and the REFS register sets the clock frequency.
• What is the purpose of the COP (Computer Operating Properly) module?
  The COP module is a watchdog timer that monitors the microcontroller's operation and resets it if it fails to respond within a specified time period. This helps prevent the microcontroller from getting stuck in an infinite loop or other abnormal operation.
• How do I use the Queued Serial Peripheral Interface (QSPI) module?
  The QSPI module is used to interface with external serial flash memory devices. It requires configuration of the QSPI clock, mode, and data transfer registers, as well as setting up the external flash memory device's control pins.
• What is the difference between the MC9S12A256MPVE and the MC9S12A256BMPVE?
  The main difference is that the MC9S12A256MPVE is a commercial temperature range (-40°C to 85°C) device, while the MC9S12A256BMPVE is an extended temperature range (-40°C to 125°C) device. The 'B' suffix indicates the extended temperature range.