MCF5253VM140J Freescale Semiconductor, MCF5253VM140J Datasheet - Page 438

• 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

1
2. Make ton and toff big enough to avoid bus contention.
Advanced Technology Attachment Controller (ATA)
23.4.3.5
UDMA mode timing is more complicated than PIO mode or MDMA mode. In this section, timing
diagrams for UDMA out are provided.
Figure 23-9
23-12
Parameter
There is a special timing requirement in the ATA host that requires the internal DIOW to go only high three clocks after the last
active edge on the DSTROBE signal. The equation given on this line tries to capture this constraint.
tdzfs
ATA
tack
tenv
tzah
tcvh
tcyc
tmli
tds
tdh
trp
–
–
Parameter
shows timing for UDMA out transfer start.
UDMA Out Timing Diagrams
Spec
tmli1
tdzfs
tdh1
tack
tenv
tds1
tzah
tcvh
tx1
tc1
ton
toff
trp
1
(time_rp * T) - (tco + tsu + 3T + 2 *tbuf + 2*tcable2) > trfs (drive)
Table 23-6. Timing Parameters for UDMA in Burst
trp(min) = time_rp * T - (tskew1 + tskew2 + tskew6)
tenv(max) = (time_env * T) + (tskew1 + tskew2)
tenv(min) = (time_env * T) - (tskew1 + tskew2)
tack(min) = (time_ack * T) - (tskew1 + tskew2)
tdzfs = (time_dzfs * T) - (tskew1 + tskew2)
tcvh = (time_cvh *T) - (tskew1 + tskew2)
MCF5253 Reference Manual, Rev. 1
tmli1(min) = (time_mlix + 0.4) * T
tzah(min) = (time_zah + 0.4) * T
ton = time_on * T - tskew1
toff = time_off * T - tskew1
tds - (tskew3) - ti_ds > 0
(tcyc - tskew + TBD) > T
tdh - (tskew3) -ti_dh > 0
Value
Freescale Semiconductor
Required Conditions
should be low enough
tskew3, ti_ds, ti_dh
T big enough
time_mlix
time_dzfs
time_ack
time_env
time_zah
time_cvh
time_rp
time_rp
–