MCF5253VM140J Freescale Semiconductor, MCF5253VM140J Datasheet - Page 206

• 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

IDE and Flash Media Interface
To set up the SmartMedia interface perform the following tasks.
13.2.1
13-8
SmartMedia
tCLS, tCLH,
tALS, tALH
1. Program the three Chip Select registers inside the chip select modules (CSAR2, CSMR2, CSCR2)
2. Program the IDE config1 register. Only fields CS2PRE, CS2POST, BUFEN1CS2EN,
3. Program the IDE config2 register as follows:
Symbol
Timing
as follows:
— CSCR2 bit fields must be programmed as follows:
BUFEN2CS2EN. The values required for the buffer enable signals BUFEN1CS2EN and
BUFEN2CS2EN depend on the hardware configuration. If two buffers are used in cascade, both
bits must be 1. Fields CS2PRE and CS2POST are relevant and are detailed later in this section.
— TA enable 2 = ‘1.’
— IDE_IORDY enable 2 = ‘0.’
— WAITCOUNT2 is required and is explained later in this section.
– AA—0 (TA signal generated by IDEconfig2 register logic)
– WS[3:0]—not relevant
– PS[1:0]—01 (8 bit port size)
– BSTR, BSTW—00 (no burst read/write cycles)
SmartMedia Timing
A SmartMedia interface and an IDE interface cannot be implemented
simultaneously in the same hardware application as they both share the
same read and write strobe signals on the MCF5253.
Typical Value
20, 40
nS
Write data
BUFENB
Address
DIOW
BufEnb
SWE
Clk
Controlled by
Table 13-6. SmartMedia Timing Values
Setting
Figure 13-6. SmartMedia Timing
MCF5253 Reference Manual, Rev. 1
–
t11
Equation (Approximately)
NOTE
CS2PRE > t1 - tbuf
t12
t13
Realized in software because CLE
and ALE are driven by gpio.
Freescale Semiconductor
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