MCIMX255AJM4A Freescale Semiconductor, MCIMX255AJM4A Datasheet - Page 64

• Manufacturer Part Number: MCIMX255AJM4A
• Description: IC MPU IMX25 AUTO 400MAPBGA
• Manufacturer: Freescale Semiconductor
• Series: i.MX25r

Specifications of MCIMX255AJM4A

• Core Processor: ARM9
• Core Size: 32-Bit
• Speed: 400MHz
• Connectivity: 1-Wire, CAN, EBI/EMI, Ethernet, I²C, MMC, SmartCard, SPI, SSI, UART/USART, USB OTG
• Peripherals: DMA, I²S, LCD, POR, PWM, WDT
• Number Of I /o: 128
• Program Memory Type: External Program Memory
• Ram Size: 144K x 8
• Voltage - Supply (vcc/vdd): 1.15 V ~ 1.52 V
• Data Converters: A/D 3x12b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 400-MAPBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

3.7.6.1.3
The following diagrams and tables specify timing related to the SDRAMC module, which interfaces with
DDR2 SDRAM.
Table 50
differential slew rate of 2 V/ns. For additional values, use
DDR2-400, DDR2-533.”
64
DDR1
DDR2
DDR3
ID
SDCLK
SDCLK
ADDR
provides values for a command/address slew rate of 1 V/ns and an SDCLK, SDCLK_B
RAS
CAS
WE
CKE
CS
DDR6
DDR4
DDR4
DDR2 SDRAM–Specific Parameters
ROW/BA
SDRAM clock high-level width
SDRAM clock low-level width
i.MX25 Applications Processor for Automotive Products, Rev. 8
SDRAM clock cycle time
Figure 31. DDR2 SDRAM Basic Timing Parameters
DDR5
Table 50. DDR2 SDRAM Timing Parameter Table
DDR5
Parameter
DDR7
DDR4
DDR4
COL/BA
DDR4
DDR5
DDR5
Table
DDR1
DDR3
51, “tlS, tlH Derating Values for
Symbol
t
t
t
CH
CL
CK
DDR2
Min.
0.45
0.45
7.5
DDR2-400
Freescale Semiconductor
Max.
0.55
0.55
8
Unit
t
t
ns
CK
CK