MCIMX253DJM4 Freescale, MCIMX253DJM4 Datasheet - Page 85
MCIMX253DJM4
Manufacturer Part Number
MCIMX253DJM4
Description
Manufacturer
Freescale
Datasheet
1.MCIMX253DJM4.pdf
(154 pages)
Specifications of MCIMX253DJM4
Operating Temperature (min)
-20C
Operating Temperature (max)
70C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Lead Free Status / RoHS Status
Compliant
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Freescale Semiconductor
Card Input Clock
eSDHC Output / Card Inputs CMD, DAT (Reference to CLK)
eSDHC Input / Card Outputs CMD, DAT (Reference to CLK)
In low-speed mode, card clock must be lower than 400 kHz, voltage ranges from 2.7 to 3.6 V.
In normal-speed mode for SD/SDIO card, clock frequency can be any value between 0 ~ 25 MHz. In high speed mode, clock
frequency can be any value between 0 ~ 50 MHz.
In normal-speed mode for MMC card, clock frequency can be any value between 0 ~ 20 MHz. In high speed mode, clock
frequency can be any value between 0 ~ 52 MHz.
To satisfy hold timing, the delay difference between clock input and cmd/data input must not exceed 2 ns.
SD1
SD2
SD3
SD4
SD5
SD6
SD7
SD8
ID
Clock frequency (low speed)
Clock frequency (SD/SDIO full speed/high speed)
Clock frequency (MMC full speed/high speed)
Clock frequency (identification mode)
Clock low time
Clock high time
Clock rise time
Clock fall time
eSDHC output delay
eSDHC input setup time
eSDHC input hold time
output from eSDHCv2 to card
input from card to eSDHCv2
i.MX25 Applications Processor for Consumer and Industrial Products, Rev. 7
Table 61. eSDHCv2 Interface Timing Specification
Parameter
DAT0
DAT1
DAT7
DAT0
DAT1
DAT3
CMD
CMD
CLK
......
......
Figure 54. eSDHCv2 Timing
SD3
SD5
SD6
SD2
SD7
SD4
SD8
Symbols
f
f
f
t
t
t
t
f
t
t
t
PP
PP
PP
TLH
THL
WH
ISU
OD
WL
OD
IH
4
1
2
3
SD1
Min.
100
6.5
6.5
2.5
2.5
–3
—
—
0
0
0
25/50
20/52
Max.
400
400
—
—
—
—
3
3
3
MHz
MHz
Unit
kHz
kHz
ns
ns
ns
ns
ns
ns
ns
85
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