MCIMX251AVM4 Freescale Semiconductor, MCIMX251AVM4 Datasheet - Page 92
![no-image](/images/manufacturer_photos/0/2/262/freescale_semiconductor_sml.jpg)
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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3.7.11
The I
Figure 64
parameters (IC1–IC6) shown in the figure.
92
I2CLK
IC10
IC12
IC11
IC1
IC2
IC3
IC4
IC5
IC6
IC7
IC8
IC9
•
•
•
•
•
•
•
I2DAT
ID
2
C communication protocol consists of the following seven elements:
Start
Data source/recipient
Data direction
Slave acknowledge
Data
Data acknowledge
Stop
shows the timing of the I
I2CLK cycle time
Hold time (repeated) START condition
Set-up time for STOP condition
Data hold time
HIGH Period of I2CLK Clock
LOW Period of the I2CLK Clock
Set-up time for a repeated START condition
Data set-up time
Bus free time between a STOP and START condition
Rise time of both I2DAT and I2CLK signals
Fall time of both I2DAT and I2CLK signals
Capacitive load for each bus line (C
Inter IC Communication (I
IC2
START
i.MX25 Applications Processor for Automotive Products, Rev. 8
IC10
Table 69. I2C Module Timing Parameters: 3.0 V +/–0.30 V
IC6
IC8
IC1
Parameter
IC10
Figure 64. I
2
IC5
C module.
IC4
b
)
2
C Module Timing Diagram
IC11
Table 69
2
C) Timing
IC11
and
IC7
Table 70
START
Standard Mode
Min.
250
4.0
4.0
4.0
4.7
4.7
4.7
10
0
-
-
-
1
describe the I
3.45
Max.
1000
300
400
-
-
-
-
-
-
-
-
2
IC3
20+0.1C
20+0.1C
STOP
100
Min.
2.5
0.6
0.6
0.6
1.3
0.6
1.3
0
2
Fast Mode
-
Freescale Semiconductor
1
C module timing
3
b
b
4
4
IC9
Max.
0.9
300
300
400
-
-
-
-
-
-
-
START
2
Unit
pF
μs
μs
μs
μs
μs
μs
μs
ns
μs
ns
ns
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