MCF5253VM140J Freescale Semiconductor, MCF5253VM140J Datasheet - Page 365

• 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

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;
;
19.2.2
Three GPIO lines define the boot mode and device type. After initialization of the on-chip resources, the
boot loader reads the status of the GPIO lines and selects the requested device to boot from. Boot type
encoding is described in
Freescale Semiconductor
/* Disable ACRs */
moveq.l #0,d0
movec
movec
/* Initialize SRAMBAR */
move.l
movec
move.l
movec
move.l
movec
move.l
movec
/* Initialize CS0 */
move.l
move.l
move.l
move.l
move.l
move.l
move.l
move.w
jsr
bra
Boot Type Detection
I
SPI (master)
IDE (master)
I
UART (5.6448/11.2896 MHz Xtal)
UART (8.4672/16.9344/33.8688 MHz Xtal)
UART (5/10/20 MHz Xtal)
2
2
C master
C slave
d0,ACR0
d0,ACR1
#SRAM0base+1,d0;
d0,SRAMBAR
#SRAM1base+1,d0;
d0,SRAMBAR1
#___MBAR+1,d0;
d0,MBAR;
#___MBAR2+1,d0;
d0,MBAR2;
#ROMbase,d0;
d0,CSAR0;
#0xFFFF0001,d0;
d0,CSMR0;
#0x0580,d0;
d0,CSCR0;
#___SP_INIT,sp
#0x2000,SR;
_main
.;
Table
Boot Mode
19-1.
Table 19-1. Boot Detection GPIO
MCF5253 Reference Manual, Rev. 1
/* locate SRAM0, validate it! */
/* locate SRAM1, validate it! */
/* locate MBAR and validate */
/* locate MBAR2 and validate*/
/* locate ROM */
/* block size 64 KB, validate */
/* port size 16 bit, AA, 1WS */
/* enable interrupts */
/* loop in case main returns */
GPIO50
0
0
0
1
1
1
1
GPIO49
0
0
1
0
0
1
1
GPIO48
0
1
0
0
1
0
1
Boot ROM
19-3