MCF51EM256CLL Freescale Semiconductor, MCF51EM256CLL Datasheet - Page 100

• Manufacturer Part Number: MCF51EM256CLL
• Description: IC MCU 32BIT 256KB FLASH 100LQFP
• Manufacturer: Freescale Semiconductor
• Series: MCF51EMr

Specifications of MCF51EM256CLL

• Core Processor: Coldfire V1
• Core Size: 32-Bit
• Speed: 50MHz
• Connectivity: I²C, SCI, SPI
• Peripherals: LCD, LVD, PWM, WDT
• Number Of I /o: 63
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Data Converters: A/D 16x12b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-LQFP
• Processor Series: MCF51EM
• Core: ColdFire V1
• Data Bus Width: 32 bit
• Data Ram Size: 16 KB
• Interface Type: RS-232, LIN
• Maximum Clock Frequency: 50 MHz
• Number Of Timers: 3
• Operating Supply Voltage: 1.8 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: JLINK-CF-BDM26, EWCF
• Development Tools By Supplier: DEMOEM
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Memory
3.4.5.4
The sector erase operation will erase all addresses in a 1 KB sector of flash memory using an embedded
algorithm.
An example flow to execute the sector erase operation is shown in
write sequence is as follows:
If a flash sector to be erased is in a protected area of the flash block, the FPVIOL flag in the FxSTAT
register will set and the sector erase command will not launch. Once the sector erase command has
successfully launched, the FCCF flag in the FxSTAT register will set after the sector erase operation has
completed.
3-44
1. Write to an aligned flash block address to start the command write sequence for the sector erase
2. Write the sector erase command, 0x40, to the FxCMD register.
3. Clear the FCBEF flag in the FxSTAT register by writing a 1 to FCBEF to launch the sector erase
command. The flash address written determines the sector to be erased while the data written is
ignored.
command.
Sector Erase Command
MCF51EM256 Series ColdFire Integrated Microcontroller Reference Manual, Rev. 8
Figure
3-13. The sector erase command
Freescale Semiconductor