MCF51EM256CLL Freescale Semiconductor, MCF51EM256CLL Datasheet - Page 28

• 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

Device Overview
1-10
Clock Check
& Select
Note: The ADCs have minimum and maximum frequency requirements. See the ADC chapter and the MCF51EM256 Series Data
Sheet. Flash memory has frequency requirements for program and erase operations. Each ADC also has its own internal
asynchronous clock source, which is not shown above.
* The fixed frequency clock (FFCLK) is internally synchronized to the bus clock (BUSCLK) and must not exceed one half of the bus
clock frequency.
ICS
Oscillator Control
OSCOUT2
to LCD
MCF51EM256 Series ColdFire Integrated Microcontroller Reference Manual, Rev. 8
ICSERCLK
ICSFFCLK
ICSOUT
XOSC2
RGPIO
DBG
CPU
ICSLCLK
OSCOUT1
1 kHz
LPO
÷2
÷2
XOSC1
RAM
LPOCLK
Figure 1-3. Clock Distribution Diagram
BUSCLK
SYNC*
Separate Power Domain
BDM
COP
Independent
OSCOUT1&2
RTC
TPMCLK
LCD
TPM
FFCLK*
Controller
Interrupt
MTIM2
MTIM3
TMRCLK1
MTCK
ADACK
ADC 1
ADC 2
ADC 3
ADC 4
MTIM1
TMRCLK2
PDB
VREG
FLASH
KBI &
GPIO
Freescale Semiconductor
IIC
SPI1
SPI2
SPI3
PRACMP1
PRACMP2
SCI1
SCI2
SCI3