MCF51EM256CLL Freescale Semiconductor, MCF51EM256CLL Datasheet - Page 490

• 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

Analog-to-Digital Converter (S08ADC16)
the compare values (ADCCV1H:ADCCV1L and ADCCV2H:ADCCV2L) are used as described in
Table
With the ADC range enable bit set, ADCREN =1, if compare value register 1(ADCCV1 value) is less than
or equal to the compare value register 2 (ADCCV2 value), setting ACFGT will select a
trigger-if-inside-compare-range, inclusive-of-endpoints function. Clearing ACFGT will select a
trigger-if-outside-compare-range, not-inclusive-of-endpoints function.
If ADCCV1 is greater than the ADCCV2, setting ACFGT will select a trigger-if-outside-compare-range,
inclusive-of-endpoints function. Clearing ACFGT will select a trigger-if-inside-compare-range,
not-inclusive-of-endpoints function.
If the condition selected evaluates true, COCOn is set.
Upon completion of a conversion while the compare function is enabled, if the compare condition is not
true, COCOn is not set and the conversion result data will not be transferred to the result register. If the
hardware averaging function is enabled, the compare function compares the averaged result to the compare
values. The same compare function definitions apply. An ADC interrupt is generated upon the setting of
COCOn if the respective ADC interrupt is enabled (AIENn=1).
21.5.7
The ADC contains a self-calibration function that is required to achieve the specified accuracy. Calibration
must be run or valid calibration values written after any reset and before a conversion is initiated. The
calibration function sets the offset calibration value and the plus-side and minus-side calibration values.
21-34
0
1
0
0
1
1
21-24.There are six compare modes as shown in
0
0
1
1
1
1
Calibration Function
relative to
Less Than
Less than
ADCCV1
ADCCV2
or equal
or equal
Greater
Greater
The compare function can monitor the voltage on a channel while the MCU
is in wait or stop3 mode. The ADC interrupt wakes the MCU when the
compare condition is met.
than
than
MCF51EM256 Series ColdFire Integrated Microcontroller Reference Manual, Rev. 8
-
-
Less than threshold
Greater than or equal to threshold
Outside range, not inclusive
Inside range, not inclusive
Inside range, inclusive
Outside range, inclusive
Function
Table 21-24. Compare Modes
NOTE
Table
Compare true if the result is less than the ADCCV1
registers.
Compare true if the result is greater than or equal to
ADCCV1 registers.
Compare true if the result is less than ADCCV1 Or the
result is Greater than ADCCV2
Compare true if the result is less than ADCCV1 And the
result is greater than ADCCV2
Compare true if the result is greater than or equal to
ADCCV1 And the result is less than or equal to
ADCCV2
Compare true if the result is greater than or equal to
ADCCV1 Or the result is less than or equal to ADCCV2
21-24.
Compare Mode Description
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