MCIMX253CVM4 Freescale Semiconductor, MCIMX253CVM4 Datasheet - Page 46
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MCIMX253CVM4
Manufacturer Part Number
MCIMX253CVM4
Description
IC MPU I.MX25 IND 400MAPBGA
Manufacturer
Freescale Semiconductor
Series
i.MX25r
Specifications of MCIMX253CVM4
Core Processor
ARM9
Core Size
32-Bit
Speed
400MHz
Connectivity
1-Wire, EBI/EMI, Ethernet, I²C, MMC, SmartCard, SPI, SSI, UART/USART, USB OTG
Peripherals
DMA, I²S, LCD, POR, PWM, WDT
Number Of I /o
128
Program Memory Type
External Program Memory
Ram Size
144K x 8
Voltage - Supply (vcc/vdd)
1.15 V ~ 1.52 V
Data Converters
A/D 3x12b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
400-LFBGA
Operating Temperature (min)
-40C
Operating Temperature (max)
85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Lead Free Status / Rohs Status
Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MCIMX253CVM4
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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To meet PIO read mode timing requirements, a number of timing parameters must be controlled.
shows timing parameters and their determining relations, and indicates parameters that can be adjusted to
meet required conditions.
1
Figure 12
46
Parameter
See
ATA
trd
tA
t1
t2
t9
t5
t6
t0
Figure
gives timing waveforms for PIO write mode.
Mode Timing
11.
Parameter
PIO Read
trd1
t2r
—
t1
t9
t5
t6
tA
i.MX25 Applications Processor for Consumer and Industrial Products, Rev. 6
1
t1(min.) = time_1
t2(min.) = time_2r
t9(min.) = time_9
t5(min.) = tco + tsu + tbuf + tbuf + tcable1 + tcable2
0
tA(min.) = (1.5 + time_ax) T – (tco + tsui + tcable2 + tcable2 + 2 tbuf)
trd1(max.) = (–trd) + (tskew3 + tskew4)
trd1(min.) = (time_pio_rdx – 0.5)
(time_pio_rdx – 0.5)
t0(min.) = (time_1 + time_2 + time_9)
Write Data(15:0)
ADDR
(See note 1)
buffer_en
Table 34. Timing Parameters for PIO Read Mode
DIOR
DIOW
IORDY
IORDY
Figure 12. PIO Write Mode Timing
T – (tskew1 + tskew2 + tskew5)
T – (tskew1 + tskew2 + tskew6)
T – (tskew1 + tskew2 + tskew5)
T > tsu + thi + tskew3 + tskew4
t1
Relation
ton
tA
T – (tsu + thi)
T
t2w
tB
t4 toff
t9
t1
If not met, increase time_2
time_1, time_2r, time_9
Freescale Semiconductor
Adjustable Parameter
time_pio_rdx
time_ax
time_2r
time_9
time_1
—
Table 34
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