MCF51EM256CLL Freescale Semiconductor, MCF51EM256CLL Datasheet - Page 493

• 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

For temperature calculations, use the V
In application code, the user reads the temperature sensor channel, calculates V
V
less than V
For more information on using the temperature sensor, consult AN3031.
21.5.10 MCU Wait Mode Operation
Wait mode is a lower power-consumption standby mode from which recovery is fast because the clock
sources remain active. If a conversion is in progress when the MCU enters wait mode, it continues until
completion. Conversions can be initiated while the MCU is in wait mode by means of the hardware trigger
or if continuous conversions are enabled.
The bus clock, bus clock divided by two, and ADACK are available as conversion clock sources while in
wait mode. The use of ALTCLK as the conversion clock source in wait is dependent on the definition of
ALTCLK for this MCU. Consult the module introduction for information on ALTCLK specific to this
MCU.
If the compare and hardware averaging functions are disabled, a conversion complete event sets the
COCOn and generates an ADC interrupt to wake the MCU from wait mode if the respective ADC interrupt
is enabled (AIENn=1). If the hardware averaging function is enabled the COCOn will set (and generate an
interrupt if enabled) when the selected number of conversions are complete. If the compare function is
enabled the COCOn will set (and generate an interrupt if enabled) only if the compare conditions are met.
If a single conversion is selected and the compare trigger is not met, the ADC will return to its idle state
and cannot wake the MCU from wait mode unless a new conversion is initiated by the hardware trigger.
21.5.11 MCU Stop3 Mode Operation
Stop mode is a low power-consumption standby mode during which most or all clock sources on the MCU
are disabled.
21.5.11.1 Stop3 Mode With ADACK Disabled
If the asynchronous clock, ADACK, is not selected as the conversion clock, executing a stop instruction
aborts the current conversion and places the ADC in its idle state. The contents of the ADC registers,
including ADCRHn and ADCRLn, are unaffected by stop3 mode. After exiting from stop3 mode, a
software or hardware trigger is required to resume conversions.
21.5.11.2 Stop3 Mode With ADACK Enabled
If ADACK is selected as the conversion clock, the ADC continues operation during stop3 mode. For
guaranteed ADC operation, the MCU’s voltage regulator must remain active during stop3 mode. Consult
the module introduction for configuration information for this MCU.
Freescale Semiconductor
TEMP25.
— V
— m is the hot or cold voltage versus temperature slope in V/°C.
If V
TEMP25
TEMP25
TEMP
MCF51EM256 Series ColdFire Integrated Microcontroller Reference Manual, Rev. 8
the hot slope value is applied in
is greater than V
is the voltage of the temperature sensor channel at 25°C.
TEMP25
TEMP25
the cold slope value is applied in
and m values from the ADC Electricals table.
Equation
21-2.
Analog-to-Digital Converter (S08ADC16)
Equation
TEMP
, and compares to
21-2. If V
TEMP
21-37
is