MCIMX255AJM4AR2 Freescale Semiconductor, MCIMX255AJM4AR2 Datasheet - Page 83

• Manufacturer Part Number: MCIMX255AJM4AR2
• Description: Processors - Application Specialized IMX25 1.2 AUTO
• Manufacturer: Freescale Semiconductor

Specifications of MCIMX255AJM4AR2

• Core: ARM926EJ-S
• Processor Series: MCIMX25
• Maximum Clock Frequency: 400 MHz
• Instruction / Data Cache Memory: 16 KB
• Data Ram Size: 128 KB
• Operating Supply Voltage: 1.15 V to 1.52 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: MAPBGA-400
• Interface Type: USB
• Memory Type: DDR2
• Minimum Operating Temperature: - 40 C

1
2
3
4
5
6
3.7.8
Figure 54
figure. The following definitions apply to values and signals described in
Freescale Semiconductor
No.
86
87
88
89
90
91
92
93
94
95
96
97
V
In the “Characteristics” column, bl = bit length, wl = word length, wr = word length relative
In the “Expression” column, T
For the internal clock, the external clock cycle is defined by Icyc and the ESAI control register.
The word-relative frame sync signal waveform relative to the clock operates in the same manner as the bit-length frame sync
signal waveform, but spreads starting from one serial clock before the first bit clock (same as the bit length frame sync signal),
until the second-to-last bit-clock of the first word in the frame.
Periodically sampled and not 100% tested.
CORE_VDD
•
•
•
SCKT rising edge to data out valid
SCKT rising edge to data out high
impedance
SCKT rising edge to transmitter #0 drive
enable negation
FST input (bl, wr) setup time before SCKT
falling edge
FST input (wl) setup time before SCKT falling
edge
FST input hold time after SCKT falling edge
FST input (wl) to data out enable from high
impedance
FST input (wl) to transmitter #0 drive enable
assertion
Flag output valid after SCKT rising edge
HCKR/HCKT clock cycle
HCKT input rising edge to SCKT output
HCKR input rising edge to SCKR output
LS: low-speed mode. Low-speed card can tolerate clocks up to 400 kHz
FS: full-speed mode. Full-speed MMC card’s clock can reach 20 MHz; full speed SD/SDIO card
clock can reach 25 MHz
HS: high-speed mode. High-speed MMC card’s clock can reach 52 MHz; SD/SDIO card clock can
reach 50 MHz
shows eSDHCv2 timing, and
Enhanced Secured Digital Host Controller (eSDHCv2) Timing
= 1.00
6
5
Characteristics
0.10 V; T
6
Table 60. ESAI General Timing Requirements (continued)
i.MX25 Applications Processor for Automotive Products, Rev. 9
C
J
= 7.5 ns.
= –40 °C to 125 °C, C
1 2
Table 61
Symbol
L
—
—
—
—
—
—
—
—
—
—
—
—
= 50 pF
describes the timing parameters (SD1–SD8) used in the
Expression
2 x T
—
—
—
—
—
—
—
—
—
—
—
C
3
Min.
18.0
18.0
2.0
2.0
4.0
5.0
15
—
—
—
—
—
—
—
—
—
—
—
—
Table
Max.
18.0
13.0
21.0
16.0
14.0
21.0
14.0
14.0
18.0
18.0
9.0
9.0
61:
—
—
—
—
—
—
—
Condition
x ck
x ck
x ck
x ck
x ck
x ck
x ck
i ck
i ck
i ck
i ck
i ck
i ck
i ck
—
—
—
—
—
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
83