MCF5249LAG120 Freescale Semiconductor, MCF5249LAG120 Datasheet - Page 339

• Manufacturer Part Number: MCF5249LAG120
• Description: IC MPU 32BIT COLDF 144-LQFP
• Manufacturer: Freescale Semiconductor
• Series: MCF524xr

Specifications of MCF5249LAG120

• Core Processor: Coldfire V2
• Core Size: 32-Bit
• Speed: 120MHz
• Connectivity: I²C, IDE, MMC, SPI, UART/USART
• Peripherals: DMA, I²S, POR, Serial Audio, WDT
• Number Of I /o: 34
• Program Memory Type: ROMless
• Ram Size: 96K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 4x12b
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 144-LQFP
• Family Name: MCF5xxx
• Device Core: ColdFire
• Device Core Size: 32b
• Frequency (max): 120MHz
• Instruction Set Architecture: RISC
• Supply Voltage 1 (typ): 1.8V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 144
• Package Type: LQFP
• Maximum Clock Frequency: 120 MHz
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: 0 C
• Program Memory Size: 8KB
• Cpu Speed: 120MHz
• Embedded Interface Type: I2C, QSPI, UART
• Digital Ic Case Style: LQFP
• No. Of Pins: 144
• Rohs Compliant: Yes
• For Use With: M5249C3 - KIT EVAL FOR M5249 W/ETHERNET
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Lead Free Status / Rohs Status: Compliant

Freescale Semiconductor, Inc.
MOVE.B (A7)+, MBCR;
MOVE.B CALLING,-(A7);Transmit the calling address, D0=R/W
MOVE.B (A7)+, MBDR;
IFREE MOVE.B MBSR,-(A7);Check the IBB bit of the MBSR.
;If it is clear, wait until it is set.
BTST.B #5, (A7)+;
BEQ.S IBFREE;
MBSR LEA.L MBSR,-(A7);Load effective address
BCLR.B #1,(A7)+;Clear the IIF flag
MOVE.B MBCR,-(A7);Push the address on stack,
BTST.B #5,(A7)+;check the MSTA flag
BEQ.S SLAVE;Branch if slave mode
MOVE.B MBCR,-(A7);Push the address on stack
BTST.B #4,(A7)+;check the mode flag
BEQ.S RECEIVE;Branch if in receive mode
MOVE.B MBSR,-(A7);Push the address on stack,
BTST.B #0,(A7)+;check ACK from receiver
BNE.B
END;If no ACK, end of transmission
TRANSMIT MOVE.B DATABUF,-(A7);Stack data byte
MOVE.B (A7)+, MBDR);Transmit next byte of data
Generation of STOP
A data transfer ends with a STOP signal generated by the “master’' device. A master transmitter can generate a STOP signal
after all the data has been transmitted. The following code is an example showing how a master transmitter generates a stop
condition.
MASTX
MOVE.B MBSR, -(A7); If no ACK, branch to end
For More Information On This Product,
Go to: www.freescale.com