I2
參數(shù)資料
型號： MPC8315EVRADDA
廠商： Freescale Semiconductor
文件頁數(shù)： 50/106頁
文件大?。?/td> 0K
描述： MPU POWERQUICC II PRO 620-PBGA
標(biāo)準(zhǔn)包裝： 36
系列： MPC83xx
處理器類型： 32-位 MPC83xx PowerQUICC II Pro
速度： 266MHz
電壓： 1V
安裝類型： 表面貼裝
封裝/外殼： 620-BBGA 裸露焊盤
供應(yīng)商設(shè)備封裝： 620-PBGA（29x29）
包裝： 托盤
MPC8315E PowerQUICC II Pro Processor Hardware Specifications, Rev. 2
48
Freescale Semiconductor
I2C
13.2
I2C AC Electrical Specifications
This table provides the AC timing parameters for the I2C interface.
This figure provides the AC test load for the I2C.
Figure 33. I2C AC Test Load
Table 48. I2C AC Electrical Specifications
All values refer to VIH (min) and VIL (max) levels (see Table 47)
Parameter
Symbol 1
Min
Max
Unit
SCL clock frequency
fI2C
0
400
kHz
Low period of the SCL clock
tI2CL
1.3
—
s
High period of the SCL clock
tI2CH
0.6
—
s
Setup time for a repeated START condition
tI2SVKH
0.6
—
s
Hold time (repeated) START condition (after this period, the first clock pulse is
generated)
tI2SXKL
0.6
—
s
Data setup time
tI2DVKH
100
—
ns
Data hold time:
CBUS compatible masters
I2C bus devices
tI2DXKL
—
0 2
—
0.9 3
s
Fall time of both SDA and SCL signals
tI2CF
4
—
300
ns
Setup time for STOP condition
tI2PVKH
0.6
—
s
Bus free time between a STOP and START condition
tI2KHDX
1.3
—
s
Noise margin at the LOW level for each connected device (including hysteresis)
VNL
0.1
NVDD
—
V
Noise margin at the HIGH level for each connected device (including hysteresis)
VNH
0.2
NVDD
—
V
Note:
1. The symbols used for timing specifications 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 I
2C 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 I2C 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. MPC8315E 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 to be met only if the device does not stretch the LOW period (tI2CL) of the SCL signal.
4. MPC8315E does not follow the I2C-BUS Specifications version 2.1 regarding the tI2CF AC parameter.
Output
Z0 = 50
NVDD/2
RL = 50
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