MCF5249VF140 Freescale Semiconductor, MCF5249VF140 Datasheet - Page 340

• Manufacturer Part Number: MCF5249VF140
• Description: IC MPU 32B 140MHZ COLDF 160-BGA
• Manufacturer: Freescale Semiconductor
• Series: MCF524xr

Specifications of MCF5249VF140

• Core Processor: Coldfire V2
• Core Size: 32-Bit
• Speed: 140MHz
• Connectivity: I²C, IDE, MMC, SPI, UART/USART
• Peripherals: DMA, I²S, POR, Serial Audio, WDT
• Number Of I /o: 47
• 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: 160-MAPBGA
• Embedded Interface Type: I2C, QSPI, UART
• Digital Ic Case Style: BGA
• No. Of Pins: 160
• Operating Temperature Range: 0°C To +70°C
• Frequency Typ: 140MHz
• Termination Type: SMD
• Rohs Compliant: No
• Family Name: MCF5xxx
• Device Core: ColdFire
• Device Core Size: 32b
• Frequency (max): 140MHz
• 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: 160
• Package Type: MA-BGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Lead Free Status / Rohs Status: Not Compliant

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BTST.B #0,(A7)+
BNE.B END
MOVE.B TXCNT,D0;Get value from the transmitting counter
BEQ.S END;If no more data, branch to end
MOVE.B DATABUF,-(A7);Transmit next byte of data
MOVE.B (A7)+,MBDR
MOVE.B TXCNT,D0;Decrease the TXCNT
SUBQ.L #1,D0
MOVE.B D0,TXCNT
BRA.S EMASTX;Exit
END LEA.L MBCR,-(A7);Generate a STOP condition
BCLR.B #5,(A7)+
EMASTX RTE; Return from interrupt
MASR MOVE.B RXCNT,D0;Decrease RXCNT
SUBQ.L #1,D0
MOVE.B D0,RXCNT
BEQ.S ENMASR;Last byte to be read
MOVE.B RXCNT,D1;Check second-to-last byte to be read
EXTB.L D1
SUBI.L #1,D1;
BNE.S NXMAR; Not last one or second last
LAMAR BSET.B #3,MBCR;Disable ACK
BRA NXMAR
ENMASR BCLR.B #5,MBCR; Last one, generate 'STOP'signal
NXMAR MOVE.B MBDR,RXBUF; Read data and store RTE
Generation of Repeated START
At the end of data transfer, if the master still wants to communicate on the bus, it can generate another START signal followed
by another slave address without first generating a STOP signal. A program example follows.
RESTART MOVE.B MBCR,-(A7); Another START (RESTART)
BSET.B #2, (A7)
MOVE.B (A7)+, MBCR
MOVE.B CALLING,-(A7);Transmit the calling address, D0=R/W-
MOVE.B CALLING,-(A7);
MOVE.B (A7)+, MBDR
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