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鍙冩暩(sh霉)璩囨枡
鍨嬭櫉锛� MCIMX356AVM4B
寤犲晢锛� Freescale Semiconductor
鏂囦欢闋佹暩(sh霉)锛� 111/147闋�
鏂囦欢澶у皬锛� 0K
鎻忚堪锛� IC MPU I.MX35 400MAPBGA
妯�(bi膩o)婧�(zh菙n)鍖呰锛� 90
绯诲垪锛� i.MX35
鏍稿績铏曠悊鍣細 ARM11
鑺珨灏哄锛� 32-浣�
閫熷害锛� 400MHz
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澶栧湇瑷�(sh猫)鍌欙細 DMA锛孖²S锛孡CD锛孭OR锛孭WM锛學DT
杓稿叆/杓稿嚭鏁�(sh霉)锛� 96
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RAM 瀹归噺锛� 128K x 8
闆诲 - 闆绘簮 (Vcc/Vdd)锛� 1.22 V ~ 1.47 V
鎸暕鍣ㄥ瀷锛� 澶栭儴
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灏佽/澶栨锛� 400-LFBGA
鍖呰锛� 鎵樼洡
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i.MX35 Applications Processors for Automotive Products, Rev. 10
Freescale Semiconductor
66
4.9.11
I2C AC Electrical Specifications
This section describes the electrical characteristics of the I2C module.
4.9.11.1
I2C Module Timing
Figure 43 depicts the timing of the I2C module. Table 52 lists the I2C module timing parameters.
Figure 43. I2C Bus Timing Diagram
Table 52. I2C Module Timing Parameters
ID
Parameter
Standard Mode
Fast Mode
Unit
Min.
Max.
Min.
Max.
IC1
I2CLK cycle time
10
鈥�
2.5
鈥�
渭s
IC2
Hold time (repeated) START condition
4.0
鈥�
0.6
鈥�
渭s
IC3
Set-up time for STOP condition
4.0
鈥�
0.6
鈥�
渭s
IC4
Data hold time
01
1 A device must internally provide a hold time of at least 300 ns for the I2DAT signal in order to bridge the undefined region of
the falling edge of I2CLK.
3.452
2 The maximum hold time has to be met only if the device does not stretch the LOW period (ID IC6) of the I2CLK signal.
渭s
IC5
HIGH Period of I2CLK Clock
4.0
鈥�
0.6
鈥�
渭s
IC6
LOW Period of the I2CLK Clock
4.7
鈥�
1.3
鈥�
渭s
IC7
Set-up time for a repeated START condition
4.7
鈥�
0.6
鈥�
渭s
IC8
Data set-up time
250
鈥�
1003
3 A fast-mode I2C-bus device can be used in a standard-mode I2C-bus system, but the requirement of set-up time (ID IC7) of
250 ns must then be met. This will automatically be the case if the device does not stretch the LOW period of the I2CLK signal.
If such a device does stretch the LOW period of the I2CLK signal, it must output the next data bit to the I2DAT line
max_rise_time (ID No IC10) + data_setup_time (ID No IC8) = 1000 + 250 = 1250 ns (according to the Standard-mode I2C-bus
specification) before the I2CLK line is released.
鈥攏s
IC9
Bus free time between a STOP and START condition
4.7
鈥�
1.3
鈥�
渭s
IC10
Rise time of both I2DAT and I2CLK signals
鈥�
1000
鈥�
300
ns
IC11
Fall time of both I2DAT and I2CLK signals
鈥�
300
鈥�
300
ns
IC12
Capacitive load for each bus line (Cb)鈥�
400
鈥�
400
pF
IC10
IC11
IC9
IC2
IC8
IC4
IC7
IC3
IC6
IC10
IC5
IC11
START
STOP
START
I2DAT
I2CLK
IC1
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