MCF51QM32VFM Freescale Semiconductor, MCF51QM32VFM Datasheet - Page 31
MCF51QM32VFM
Manufacturer Part Number
MCF51QM32VFM
Description
32-bit Microcontrollers - MCU COLDFIREV1 32K FLASH
Manufacturer
Freescale Semiconductor
Datasheet
1.MCF51QM128VLH.pdf
(71 pages)
Specifications of MCF51QM32VFM
Core
ColdFire V1
Processor Series
MCF51QM128
Data Bus Width
32 bit
Maximum Clock Frequency
50 MHz
Program Memory Size
32 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
QFN-32
Mounting Style
SMD/SMT
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The bytes not assigned to data flash via the FlexNVM partition code are used by the
FTFL to obtain an effective endurance increase for the EEPROM data. The built-in
EEPROM record management system raises the number of program/erase cycles that can
be attained prior to device wear-out by cycling the EEPROM data through a larger
EEPROM NVM storage space.
While different partitions of the FlexNVM are available, the intention is that a single
choice for the FlexNVM partition code and EEPROM data set size is used throughout the
entire lifetime of a given application. The EEPROM endurance equation and graph
shown below assume that only one configuration is ever used.
Writes_FlexRAM =
where
Freescale Semiconductor, Inc.
• Writes_FlexRAM — minimum number of writes to each FlexRAM location
• EEPROM — allocated FlexNVM based on DEPART; entered with Program
• EEESIZE — allocated FlexRAM based on DEPART; entered with Program Partition
• Write_efficiency —
• n
Partition command
command
nvmcycd
• 0.25 for 8-bit writes to FlexRAM
• 0.50 for 16-bit or 32-bit writes to FlexRAM
— data flash cycling endurance
EEPROM – 2 × EEESIZE
EEESIZE
MCF51QM128 Data Sheet, Rev. 6, 01/2012.
× Write_efficiency × n
nvmcycd
Memories and memory interfaces
31
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