MCIMX255AJM4AR2 Freescale Semiconductor, MCIMX255AJM4AR2 Datasheet - Page 60

• 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

3.7.6.1.2
The following diagrams and tables specify the timings related to the SDRAMC module which interfaces
with the mobile DDR SDRAM.
1
60
SD17
SD18
SD19
SD20
Test condition: Measured using delay line 5 programmed as follows: ESDCDLY5[15:0] = 0x0703.
ID
SD16
ID
DQ and DQM setup time to DQS
DQ and DQM hold time to DQS
Write cycle DQS falling edge to SDCLK output delay time
Write cycle DQS falling edge to SDCLK output hold time
DQM (output)
DQS (output)
DQ (output)
SDCLK
SDCLK
CKE output delay time
Mobile DDR SDRAM–Specific Parameters
Table 48. Mobile DDR SDRAM Write Cycle Timing Parameters
Figure 29. Mobile DDR SDRAM Write Cycle Timing Diagram
i.MX25 Applications Processor for Automotive Products, Rev. 9
Table 47. SDRAM Self-Refresh Cycle Timing Parameters
Parameter
SD17
SD17
Parameter
Data
DM
SD18
SD18
Data
DM
Data
SD17
DM
SD17
Symbol
tCKS
Data
DM
SD18
SD18
Data
DM
Min.
1.8
Symbol
Data
DM
tDSS
tDSH
tDS
tDH
SD19
1
Freescale Semiconductor
Data
DM
Min.
0.95
0.95
SD20
Max.
1.8
1.8
—
Data
DM
Max.
—
—
—
—
Unit
ns
Unit
ns
ns
ns
ns