MCF51EM256CLL Freescale Semiconductor, MCF51EM256CLL Datasheet - Page 556

• 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

Programmable Reference Analog Comparator (PRACMP)
25.1.2
This section defines the PRACMP operation in wait, stop, and background debug modes.
25.1.2.1
The PRACMP continues to operate in wait mode if enabled. The interrupt can wake up the MCU if
enabled.
25.1.2.2
The PRACMP (including PRG and ACMP) continues to operate in stop3 mode if enabled. If ACIEN is
set, a PRACMP interrupt still can be generated to wake the MCU up from stop3 mode.
If the stop3 is exited by an interrupt, the PRACMP remains the setting before entering the stop. If stop3 is
exited with a reset, the PRACMP goes into its reset.
The user should turn it off if its output is not used as a reference input of ACMP to save power, because
the PRG consumes additional power.
In stop2 mode, the PRACMP is shut down completely. Any waking up from stop2 and stop1 brings
PRACMP to its reset state.
25.1.2.3
When the MCU is in active background debug mode, the PRACMP continues operating normally.
25.1.3
The block diagram of the PRACMP module is shown in
25-2
•
•
•
Up to eight selectable comparator inputs; each input can be compared with any input by any
polarity sequence
Selectable interrupt on rising edge, falling edge, or either rising or falling edges of comparator
output
Remains operational in stop3 mode and wait mode
Modes of Operation
Block Diagram
Operation in Wait Mode
Operation in Stop Mode
Operation in Background Mode
MCF51EM256 Series ColdFire Integrated Microcontroller Reference Manual, Rev. 8
Figure
25-1.
Freescale Semiconductor