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參數(shù)資料
| 型號(hào)： | μPD78F4216Y |
| 廠商： | NEC Corp. |
| 英文描述： | 8/16 Bit RISC Microcontrollers(8/16位RISC微控制器) |
| 中文描述： | 8 / 16位RISC微控制器（8 / 16位的RISC微控制器） |
| 文件頁(yè)數(shù)： | 31/56頁(yè) |
| 文件大小： | 407K |
| 代理商： | ΜPD78F4216Y |
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μ
PD78F4216Y
31
Preliminary Data Sheet U11824EJ1V0DS00
(d) I
2
C bus mode
Parameter
Symbol
Normal Operation Mode
High-Speed Mode
Unit
MIN.
MAX.
MIN.
MAX.
SCL0 clock frequency
f
CLK
0
100
0
400
kHz
Bus free time
(between stop and start conditions)
f
BUF
4.7
—
1.3
—
μ
s
Hold time
Note 1
t
HD: STA
4.0
—
0.6
—
μ
s
SCL0 clock low-level width
t
LOW
4.7
—
1.3
—
μ
s
SCL0 clock high-level width
t
HIGH
4.0
—
0.6
—
μ
s
Start/restart condition setup time
t
SU: STA
4.7
—
0.6
—
μ
s
Data hold time
CBUS compatible t
HD: DAT
master
5.0
—
—
—
μ
s
I
2
C bus
0
Note 2
—
0
Note 2
0.9
Note 3
μ
s
Data setup time
t
SU: DAT
250
—
100
Note 4
—
ns
Rise time of SDA0 and SCL0 signal
t
R
—
1000
20+0.1Cb
Note 5
300
ns
Fall time of SDA0 and SCL0 signal
t
F
—
300
20+0.1Cb
Note 5
300
ns
Stop condition setup time
t
SU: STO
4.0
—
0.6
—
μ
s
Spike pulse width suppressed by
input filter
t
SP
—
—
0
50
ns
Load capacitance of each bus line
Cb
—
400
—
400
pF
Notes 1.
At the start condition, the first clock pulse is generated after this hold time.
2.
In order to fill out the undefined area of the falling edge of SCL0, supply a hold time internally at least
300-ns for the SDA0 signal (at V
IHmin.
of SCL0 signal).
3.
When the low hold time (t
LOW
) of the SCL0 signal is not extended, only the maximum data hold time (t
HD:
DAT
) should be filled.
4.
High-speed mode I
2
C bus can be used in the normal operation mode I
2
C bus system. In this case, the
following conditions should be met.
When the low-state hold time (t
LOW
) of the SCL0 signal is not extended
t
SU: DAT
≥
250 ns
When the low-state hold time (t
LOW
) of the SCL0 signal is extended
Send out the next data bits to the SDA0 line before the SCL0 line is released (t
Rmax.
+ t
SU: DAT
= 1000
+250 = 1250 ns: by normal operation mode I
2
C bus specification).
5.
Cb: Total capacitance of a bus line (Unit: pF)
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