MCIMX251AVM4 Freescale Semiconductor, MCIMX251AVM4 Datasheet - Page 122
MCIMX251AVM4
Manufacturer Part Number
MCIMX251AVM4
Description
IC MPU I.MX25 AUTO 400MAPBGA
Manufacturer
Freescale Semiconductor
Series
i.MX25r
Datasheet
1.MCIMX255AJM4.pdf
(140 pages)
Specifications of MCIMX251AVM4
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, 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-LFBGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MCIMX251AVM4
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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3.7.20.1.4
Table 96
Figure 95
122
US26
US27
US28
US29
No.
Transmit
USB_SE0_VM
USB_DAT_VP
USB_TXOE_B
USB_TXOE_B
USB_SE0_VM
USB_DAT_VP
USB_VM1
USB_RCV
USB_VP1
defines the signals for USB in VP_VM unidirectional mode.
shows the USB transmit waveform in VP_VM unidirectional mode diagram.
Name
Table 95. USB Port Timing Specifications in VP_VM Bidirectional Mode (continued)
VP_VM Unidirectional Mode Timing
Rx rise/fall time
Rx rise/fall time
Parameter
Rx skew
Rx skew
Figure 95. USB Transmit Waveform in VP_VM Unidirectional Mode
Table 96. Signal Definitions for USB VP_VM Unidirectional Mode
i.MX25 Applications Processor for Automotive Products, Rev. 8
US33
Direction
USB_SE0_VM
USB_DAT_VP
USB_DAT_VP
Out
Out
Out
Signal Name
In
In
In
USB_RCV
Transmit enable, active low
Tx VP data when USB_TXOE_B is low
Tx VM data when USB_TXOE_B is low
Differential Rx data
Rx VP data when USB_TXOE_B is high
Rx VM data when USB_TXOE_B is high
Direction
Out
Out
US30
In
In
US34
Min.
–6.0
–4.0
—
—
US32
Signal Description
Max.
+2.0
+4.0
3.0
3.0
Unit
ns
ns
ns
ns
Freescale Semiconductor
US31
Reference Signal
USB_SE0_VM
USB_DAT_VP
Condition/
35 pF
35 pF
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