MCF5253VM140J Freescale Semiconductor, MCF5253VM140J Datasheet - Page 225

• Manufacturer Part Number: MCF5253VM140J
• Description: IC MCU 2.1MIPS 140MHZ 225MAPBGA
• Manufacturer: Freescale Semiconductor
• Series: MCF525xr

Specifications of MCF5253VM140J

• Core Processor: Coldfire V2
• Core Size: 32-Bit
• Speed: 140MHz
• Connectivity: CAN, EBI/EMI, I²C, QSPI, UART/USART, USB OTG
• Peripherals: DMA, WDT
• Program Memory Type: ROMless
• Ram Size: 128K x 8
• Voltage - Supply (vcc/vdd): 1.08 V ~ 1.32 V
• Data Converters: A/D 6x12b
• Oscillator Type: External
• Operating Temperature: -20°C ~ 70°C
• Package / Case: 225-MAPBGA
• Processor Series: MCF525x
• Core: ColdFire V2
• 3rd Party Development Tools: JLINK-CF-BDM26, EWCF
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of I /o: -
• Eeprom Size: -
• Program Memory Size: -
• Lead Free Status / Rohs Status: Details

During this sequence, the host must look for events on SHIFT_BUSY1 and INTERRUPT1. This can be
done by polling FLASHMEDIASTATUS or FLASHMEDIAINTSTATUS, or by waiting for interrupts
SHIFTBUSY1RISE, SHIFTBUSY1FALL, INTERRUPT1RISE, INTERRUPT1FALL. To read/write data
to/from FLASHMEDIADATA1, the host can poll FLASHMEDIAINTSTAT, wait for interrupt, or use a
DMA channel. The writing of DATABITCOUNT + READDATAMASK + WIDESHIFTMASK to
FLASHMEDIACMD1 must take place after SHIFTBUSY1 has gone high. One or more packets can be
received from the card using
13.5.7
Some pseudo-code descriptions are given in this section for send command, read multiple block, and write
multiple block commands.
13.5.7.1
This sequence is intended for commands that require status response from the card, but no data transfer
between host and card. There is provision to do CRC insertion or check for command and response
packets. All need to be done in software.
/* write command to host */
CMDBITCOUNT = 46
FLASHMEDIACMD2 = 0x060000 + CMDBITCOUNT
while(CMDBITCOUNT > 0)
/* one of the two waits need to be done. */
/* First one is more suitable for polling */
/* second one more suitable for interrupt driven */
wait until ((FLASHMEDIACMD2 & 0xFFFF) == 0) OR
wait until (SHIFTBUSY2FALL event)
/* receive status from host */
wait until (SHIFTBUSY2RISE event) OR
wait until ((FLASHMEDIASTATUS & 8)!= 0)
RESPBITCOUNT = 46 or 134 /* depends on command */
FLASHMEDIACMD2 = RESPBITCOUNT;
while(RESPBITCOUNT > 0)
Freescale Semiconductor
{
if(FLASHMEDIADATA2 empty)
}
{
if(FLASHMEDIADATA2 full)
}
Commonly Used Commands in SD Mode
Send Command to Card (No Data)
{
write data to FLASHMEDIADATA2
CMDBITCOUNT:= CMDBITCOUNT - 32;
}
{
read data from FLASHMEDIADATA2
RESPBITCOUNT:= RESPBITCOUNT - 32;
}
Figure
13-26.
MCF5253 Reference Manual, Rev. 1
IDE and Flash Media Interface
13-27