參數(shù)資料
型號： MPC8560PX833LD
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 32-BIT, 833 MHz, RISC PROCESSOR, PBGA783
封裝： 29 X 29 MM, 3.75 MM HEIGHT, 1 MM PITCH, PLASTIC, FCBGA-783
文件頁數(shù)： 53/104頁
文件大?。?/td> 1244K
代理商： MPC8560PX833LD
MPC8560 Integrated Processor Hardware Specifications, Rev. 5
52
Freescale Semiconductor
I2C
11.2
I2C AC Electrical Specifications
Table 41 provides the AC timing parameters for the I2C interface of the MPC8560.
Figure 16 provides the AC test load for the I2C.
Figure 36. I2C AC Test Load
Figure 37 shows the AC timing diagram for the I2C bus.
Table 41. I2C AC Electrical Specifications
All values refer to VIH (min) and VIL (max) levels (see Table 40).
Parameter
Symbol 1
Min
Max
Unit
SCL clock frequency
fI2C
0
400
kHz
Low period of the SCL clock
tI2CL
6
1.3
—
μs
High period of the SCL clock
tI2CH
6
0.6
—
μs
Setup time for a repeated START condition
tI2SVKH
6
0.6
—
μs
Hold time (repeated) START condition (after this period, the
first clock pulse is generated)
tI2SXKL
6
0.6
—
μs
Data setup time
tI2DVKH
6
100
—
ns
Data hold time:
CBUS compatible masters
I2C bus devices
tI2DXKL
—
0 2
—
0.9 3
μs
Set-up time for STOP condition
tI2PVKH
0.6
—
μs
Bus free time between a STOP and START condition
tI2KHDX
1.3
—
μs
Noise margin at the LOW level for each connected device
(including hysteresis)
VNL
0.1
× OVDD
—V
Noise margin at the HIGH level for each connected device
(including hysteresis)
VNH
0.2
× OVDD
—V
Notes:
1. The symbols used for timing specifications herein follow the pattern of t(first two letters of functional block)(signal)(state)
(reference)(state) for inputs and t(first two letters of functional block)(reference)(state)(signal)(state) for outputs. For example, tI2DVKH
symbolizes I2C timing (I2) with respect to the time data input signals (D) reach the valid state (V) relative to the tI2C
clock reference (K) going to the high (H) state or setup time. Also, tI2SXKL symbolizes I
2C timing (I2) for the time that
the data with respect to the start condition (S) went invalid (X) relative to the tI2C clock reference (K) going to the low
(L) state or hold time. Also, tI2PVKH symbolizes I
2C timing (I2) for the time that the data with respect to the stop
condition (P) reaching the valid state (V) relative to the tI2C clock reference (K) going to the high (H) state or setup
time. For rise and fall times, the latter convention is used with the appropriate letter: R (rise) or F (fall).
2. The device provides a hold time of at least 300 ns for the SDA signal (referred to the VIHmin of the SCL signal) to bridge
the undefined region of the falling edge of SCL.
3. The maximum tI2DVKH has only to be met if the device does not stretch the LOW period (tI2CL) of the SCL signal.
4. CB = capacitance of one bus line in pF.
6. Guaranteed by design.
Output
OVDD/2
RL = 50 Ω
Z0 = 50 Ω
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