MCF51EM256CLL Freescale Semiconductor, MCF51EM256CLL Datasheet - Page 109

• 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

gain access to secure memory resources. During reset events, the contents of the flash protection
(NVPROT) byte and flash nonvolatile (NVOPT) byte in the reserved flash memory are transferred into the
corresponding FxPROT and FxOPT registers in the high-page register area to control security and block
protection options.
Table 3-15
further details.
Freescale Semiconductor
reflects the fact that ColdFire uses big endian addressing. See the ColdFire documentation for
1
MCF51EM256 series have two sets of nonvolatile registers described in
flash block. The base address of the blocks can be found in
register set is loaded in their respective flash registers. When the flash blocks swap, the nonvolatile
flash registers also swap following the array.
Base+0x03FC
Base+0x040C
Base+0x0400
Base+0x0404
Base+0x0408
MCF51EM256 Series ColdFire Integrated Microcontroller Reference Manual, Rev. 8
Address
Table 3-15. Reserved Flash Locations
Reserved
byte0
byte4
MSB
(0x0)
Reserved
Backdoor comparison key bytes four thru seven
Backdoor comparison key bytes zero thru three
NVPROT
byte1
byte5
(0x1)
Reserved
Table
Reserved
FTRIM
(bit 0)
byte2
byte6
(0x2)
3-6. At reset, each nonvolatile
1
Table
3-15. One for each
NVOPT
TRIM
byte3
byte7
(0x3)
LSB
Memory
3-53