MCF51EM256CLL Freescale Semiconductor, MCF51EM256CLL Datasheet - Page 462

• 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)
21.3.1
The ADC analog portion uses V
internally to V
External filtering may be necessary to ensure clean V
21.3.2
The ADC analog portion uses V
internally to V
21.3.3
V
The ADC can be configured to accept one of three voltage reference pairs for V
a positive reference which must be between the minimum Ref Voltage High (defined in data sheet) and
V
The three pairs are:
These voltage references are selected using the REFSEL bits in the ADCSC2 register.The alternate (V
and V
MCU configuration.Consult the module introduction for information on the Voltage References specific
to this MCU.
In some packages, V
reference(s) may be connected to the same potential as V
a level between the minimum Ref Voltage High (defined in the Data Sheet) and the V
(V
21-6
REFSH
DDAD
REFH
•
•
•
ALTL
external (V
alternate (V
internal bandgap (V
, and a ground reference which must be at the same potential as V
must never exceed V
is the high-reference voltage for the converter.
) voltage reference pair may select additional external pins or internal sources depending on
Analog Power (V
Analog Ground (V
Voltage Reference Select High (V
DD
SS
MCF51EM256 Series ColdFire Integrated Microcontroller Reference Manual, Rev. 8
. If externally available, connect the V
. If externally available, connect the V
REFH
ALTH
REFH
and V
and V
is connected in the package to V
BGH
DDAD
REFL
ALTL
Table 21-2. Signal Properties (continued)
DDAD
SSAD
and V
AD4–AD23
V
V
V
V
Name
DDAD
).
)
)
REFSH
REFSL
DDAD
SSAD
SSAD
as its ground connection. In some packages, V
BGL
as its power connection. In some packages, V
)
)
)
Voltage Reference Select High
Voltage Reference Select Low
DDAD
Analog Channel inputs
Analog power supply
SSAD
DDAD
DDAD
Analog ground
REFSH
DDAD
Function
for good results.
pin to the same voltage potential as V
pin to the same voltage potential as V
or may be driven by an external source to
. If externally available, the positive
)
SSAD
.
REFSH
Freescale Semiconductor
DDAD
SSAD
. Each pair contains
DDAD
is connected
is connected
potential
SS
ALTH
DD
.
.