MCF51EM256CLL Freescale Semiconductor, MCF51EM256CLL Datasheet - Page 96

• 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
3.4.5.2
The program operation will program a previously erased address in the flash memory using an embedded
algorithm.
An example flow to execute the program operation is shown in
sequence is as follows:
3-40
1. Write to an aligned flash block address to start the command write sequence for the program
2. Write the program command, 0x20, to the FxCMD register.
command. The data written will be programmed to the address written.
Program Command
Erase Verification
Status
Clock Register
Written
Check
Bit Polling for
Command Completion
Check
Access Error and
Protection Violation
Check
Command
Buffer Empty Check
MCF51EM256 Series ColdFire Integrated Microcontroller Reference Manual, Rev. 8
Read: FxCDIV register
Figure 3-10. Example Erase Verify Command Flow
2.
3.
1.
yes
Write: FxCMD register
Erase Verify Command 0x05
Write: FxSTAT register
Clear FCBEF 0x80
FDIVLD
Write: Flash Block Address
and Dummy Data
START
Set?
Read: FxSTAT register
Read: FxSTAT register
FACCERR/FPVIOL
FBLANK
yes
yes
FCBEF
yes
no
FCCF
Set?
Set?
Set?
EXIT
Write: FxCDIV register
Set?
no
Flash Block
Erased
no
yes
no
no
Write: FxSTAT register
Clear FACCERR/FPVIOL 0x30
Note: FxCDIV needs to
be set after each reset
Figure
3-11. The program command write
EXIT
Flash Block
Not Erased
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