Electronic Component Distributor. Source::Freescale Semiconductor
P.N:MPC8349CZUAGDB Desc:IC MPU POWERQUICC II PRO 672TBGA
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MPC8349EA PowerQUICC II Pro Integrated Host Processor Hardware Specifications, Rev. 13
Freescale Semiconductor
45
I
2
C
12 I
2
C
This section describes the DC and AC electrical characteristics for the I
2
C interface of the MPC8349EA.
12.1
I
2
C DC Electrical Characteristics
Table 42
provides the DC electrical characteristics for the I
2
C interface of the MPC8349EA.
12.2
I
2
C AC Electrical Specifications
Table 43
provides the AC timing parameters for the I
2
C interface of the MPC8349EA. Note that all values
refer to V
IH
(min) and V
IL
(max) levels (see
Table 42
).
Table 42. I
2
C DC Electrical Characteristics
At recommended operating conditions with OV
DD
of 3.3 V ± 10%.
Parameter
Symbol
Min
Max
Unit
Notes
Input high voltage level
V
IH
0.7
×
OV
DD
OV
DD
+ 0.3
V
—
Input low voltage level
V
IL
–0.3
0.3
×
OV
DD
V
—
Low level output voltage
V
OL
0
0.2
×
OV
DD
V
1
Output fall time from V
IH
(min) to V
IL
(max) with a bus
capacitance from 10 to 400 pF
t
I2KLKV
20 + 0.1
×
C
B
250
ns
2
Pulse width of spikes which must be suppressed by the
input filter
t
I2KHKL
0
50
ns
3
Input current each I/O pin (input voltage is between
0.1
×
OV
DD
and 0.9
×
OV
DD
(max)
I
I
–10
10
μ
A
4
Capacitance for each I/O pin
C
I
—
10
pF
—
Notes:
1. Output voltage (open drain or open collector) condition = 3 mA sink current.
2. C
B
= capacitance of one bus line in pF.
3. Refer to the
MPC8349EA Integrated Host Processor Family Reference Manual,
for information on the digital filter used.
4. I/O pins obstruct the SDA and SCL lines if OV
DD
is switched off.
Table 43. I
2
C AC Electrical Specifications
Parameter
Symbol
1
Min
Max
Unit
SCL clock frequency
f
I2C
0
400
kHz
Low period of the SCL clock
t
I2CL
1.3
—
μ
s
High period of the SCL clock
t
I2CH
0.6
—
μ
s
Setup time for a repeated START condition
t
I2SVKH
0.6
—
μ
s
Hold time (repeated) START condition (after this period, the first clock
pulse is generated)
t
I2SXKL
0.6
—
μ
s
Data setup time
t
I2DVKH
100
—
ns
Data hold time:CBUS compatible masters
I
2
C bus devices
t
I2DXKL
—
0
2
—
0.9
3
μ
s
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