MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 30

• Manufacturer Part Number: MCIMX281AVM4B
• Description: IC MPU I.MX28 1.2 289MAPBGA
• Manufacturer: Freescale Semiconductor
• Series: i.MX28r

Specifications of MCIMX281AVM4B

• Core Processor: ARM9
• Core Size: 32-Bit
• Speed: 454MHz
• Connectivity: CAN, EBI/EMI, Ethernet, I²C, MMC, SmartCard, SPI, SSI, UART/USART, USB OTG
• Peripherals: DMA, I²S, LCD, POR, PWM, WDT
• Program Memory Size: 128KB (32K x 32)
• Program Memory Type: Mask ROM
• Ram Size: 32K x 32
• Voltage - Supply (vcc/vdd): 1.25 V ~ 5.25 V
• Data Converters: A/D 17x12b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 289-LFBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of I /o: -
• Eeprom Size: -
• Lead Free Status / Rohs Status: Supplier Unconfirmed

3.4.3
This section includes descriptions of the electrical specifications of EMI module which interfaces external
DDR2 and Mobile-DDR1 (LP-DDR1) memory devices.
3.4.3.1
Figure 5
and Mobile-DDR1 memory devices.
30
DDR1
DDR2
ID
and
EMI_CLKN
EMI_CLK
EMI_CE0N
EMI_RASN
EMI_CASN
EMI_WEN
EMI_ADDR
EMI AC Timing
Table 34
EMI Command & Address AC Timing
CK cycle time
CK high level width
i.MX28 Applications Processors Data Sheet for Automotive Products, Rev. 0
specify the timing related to the address and command pins that interfaces DDR2
DDR4
Description
DDR4
Table 34. EMI Command/Address AC Timing
Figure 5. EMI Command/Address AC Timing
bank
row
DDR5
DDR5
Symbol
tCH
tCK
DDR4
DDR2
0.5 tCK
Min.
–0.5
6
column
DDR1
bank
Freescale Semiconductor
0.5 tCK
Max.
+ 0.5
DDR3
—
DDR5
Unit
ns
ns