MCIMX255AJM4AR2 Freescale Semiconductor, MCIMX255AJM4AR2 Datasheet - Page 56

• 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
3.7.6.1.1
The following diagrams and tables specify the timings related to the SDRAMC module which interfaces
SDRAM.
56
SD1
SD2
SD3
SD4
SD5
ID
SDCLK
SDCLK
ADDR
DQM
RAS
CAS
WE
DQ
CS
SDRAM clock high-level width
SDRAM clock low-level width
SDRAM clock cycle time
CS, RAS, CAS, WE, DQM, CKE setup time
CS, RAS, CAS, WE, DQM, CKE hold time
ESDCTL Electrical Specifications
SDRAM Memory Controller
SD4
SD6
SD4
ROW/BA
Table 44. DDR/SDR SDRAM Read Cycle Timing Parameters
i.MX25 Applications Processor for Automotive Products, Rev. 9
SD5
Figure 25. SDRAM Read Cycle Timing Diagram
SD5
SD7
Parameter
SD10
1
SD4
COL/BA
1
SD4
SD4
SD5
SD5
SD5
SD8
Note: CKE is high during the read/write cycle.
Data
SD1
SD9
SD3
SD2
Symbol
tCMH
tCMS
tCH
tCK
tCL
Min.
3.4
3.4
7.5
2.0
1.8
Freescale Semiconductor
Max.
4.1
4.1
—
—
—
Unit
ns
ns
ns
ns
ns