MCF5253VM140J Freescale Semiconductor, MCF5253VM140J Datasheet - Page 221

• 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

13.5.5.3
13.5.6
All interactions to the Secure Digital (SD) card can be broken down into a number of cascaded elementary
operations. There are three elementary operations in SD mode:
Freescale Semiconductor
•
write to CMD register
WRITE TO CMD REGISTER
Send command to card
SCLKOUT
BITCOUNTER
BS_PIN
SDIO_OUT
INT_LEVEL
SDIO_IN
SHIFT_BUSY
sclk_out
bitcounter
sdio_out
bs_pin
sdio_in
shift_busy
int_level
Flash Media Interface Operation in Secure Digital (SD) Mode
Interrupt from Memory Stick
0
Memory Stick interface timing diagram for cmd_reg(19:16) = 1000
(Wait for INT from stick)
write cmd_reg(20): new value on BS pin
write cmd_reg(21): 0
Figure 13-21. Interrupt from Memory Stick
Figure 13-22. Interrupt from Memory Stick
write cmd_reg(19:0) = 80000h
MCF5253 Reference Manual, Rev. 1
int_level = 1 ? or
rising edge on int_level ?
wait for 5 sclk clock periods
turn off sclk clock
(turning clock off is option)
INT found
end
YES
NO
IDE and Flash Media Interface
13-23