MCIMX251AJM4AR2 Freescale Semiconductor, MCIMX251AJM4AR2 Datasheet - Page 70
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MCIMX251AJM4AR2
Manufacturer Part Number
MCIMX251AJM4AR2
Description
Processors - Application Specialized IMX25 1.2 AUTO
Manufacturer
Freescale Semiconductor
Datasheet
1.MCIMX251AJM4AR2.pdf
(140 pages)
Specifications of MCIMX251AJM4AR2
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
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High is defined as 80% of signal value; low is defined as 20% of signal value.
BCLK parameters are being measured from the 50% point. For example, high is defined as 50% of signal value and low is
defined as 50% as signal value.
WE10
WE11
WE12
WE13
WE14
WE15
WE16
WE17
WE18
WE19
WE20
WE21
WE22
WE23
WE24
WE25
WE26
WE27
WE8
WE9
ID
Clock rise/fall to RW valid
Clock rise/fall to RW invalid
Clock rise/fall to OE valid
Clock rise/fall to OE invalid
Clock rise/fall to EB[y] valid
Clock rise/fall to EB[y] invalid
Clock rise/fall to LBA valid
Clock rise/fall to LBA invalid
Clock rise/fall to output data valid
Clock rise to output data invalid
Input data valid to clock rise, FCE=1
Input Data Valid to Clock rise, FCE=0 (in the case there is ECB asserted during
access)
Input Data Valid to Clock rise, FCE=0 (in the case there is NO ECB asserted
during access)
Clock rise to input data invalid, FCE=1
Clock rise to input data invalid, FCE=0
ECB setup time, FCE=1
ECB setup time, FCE=0
ECB hold time, FCE=1
ECB hold time, FCE=0
DTACK setup time
DTACK hold time
The test condition load capacitance was 25 pF. Recommended drive
strength for all controls, address, and BCLK is maximum drive.
Recommended drive strength for all controls, address and BCLK is
maximum drive.
i.MX25 Applications Processor for Automotive Products, Rev. 9
Table 56. WEIM Bus Timing Parameters
Parameter
NOTE
1
(continued)
1/2 BCLK
+2.63
Min.
17.5
–3.2
3.6
6.9
2.4
7.2
5.4
8
3
7
6
6
0
5
0
1
5
1
5
0
Freescale Semiconductor
Max.
11.5
5.5
2.5
12
12
10
20
10
—
—
—
—
—
—
—
—
—
—
—
8
1
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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