MCF51EM256CLL Freescale Semiconductor, MCF51EM256CLL Datasheet - Page 469

• 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

21.4.5
The Compare Value Registers (ADCCV1H:ADCCV1L & ADCCV2H:ADCCV2L) contain a compare
value used to compare with the conversion result when the compare function is enabled (ACFE=1). This
register is formatted the same for both bit position definition and value format (unsigned or sign-extended
2’s complement) as the Data Result Registers (ADCRHn:ADCRLn) in the different modes of operation
(See
related to the ADC mode of operation.
The compare value 2 registers (ADCCV2H:ADCCV2L) are utilized only when the compare range
function is enabled (ACREN=1).
In all modes except 8-bit single-ended conversions, the ADCCV1H register holds the upper bits of the first
compare value. In 8-bit single-ended mode, ADCCV1H is not used during compare. In all conversion
modes, the ADCCV1L register holds the lower 8 bits of the first compare value. The compare function is
further detailed in
Freescale Semiconductor
S: Sign bit or sign bit extension.
D: Data (2’s complement data if indicated).
10b single-ended
8b single-ended
9b differential
Conversion
Table
Mode
Reset:
Reset:
21-10). Therefore, the compare function only uses the compare value register bits that are
W
W
R
R
Compare Value Registers
MCF51EM256 Series ColdFire Integrated Microcontroller Reference Manual, Rev. 8
7
0
7
0
Section
0
S
0
0
S
0
Figure 21-7. Compare Value 1 High Register (ADCCV1H)
Figure 21-8. Compare Value 1 Low Register(ADCCV1L)
21.5.6.
S
0
0
0
0
6
6
Table 21-10. Data Result Register Description
0
S
0
0
S
0
Data Result Register bits
S
0
0
0
0
5
5
D
S
0
D
S
0
(ADCCV1H:ADCCV1L and ADCCV2H:ADCCV2L)
D
D
D
0
0
4
4
CV1[15:8]
CV1[7:0]
D
D
D
D
D
D
D
D
D
0
0
3
3
D
D
D
D
D
D
D
D
D
Analog-to-Digital Converter (S08ADC16)
0
0
2
2
D
D
D
unsigned right justified
unsigned right justified
0
0
1
1
sign extended 2’s
complement
Format
0
0
0
0
21-13