參數(shù)資料
型號： μPD780024Y
廠商： NEC Corp.
英文描述： 8 Bit Single Chip Microcontrollers(8位單片微控制器)
中文描述： 8位單片機微控制器（8位單片微控制器）
文件頁數(shù)： 47/66頁
文件大?。?/td> 453K
代理商： ΜPD780024Y
μ
PD780021Y, 780022Y, 780023Y, 780024Y
Preliminary Data Sheet
47
(f)
I
2
C bus Mode
Parameter
Symbol
Standard 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 condition)
t
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 master
t
HD:DAT
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
SDA0 and SCL0 signal rise time
t
R
—
1000
20 + 0.1Cb
Note 5
300
ns
SDA0 and SCL0 signal fall time
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 controlled by input filter
t
SP
—
—
0
50
ns
Capacitive load per each bus line
Cb
—
400
—
400
pF
Notes 1.
On start condition, the first clock pulse is generated after hold period.
2.
To fulfill undefined area of the SCL0 falling edge, it is necessary for the device to provide internally SDA0
signal (on V
IHmin.
of SCL0 signal) with at least 300 ns of hold time.
3.
If the device does not extend the SCL0 signal low hold time (t
LOW
), only maximum data hold time t
HD:DAT
needs to be fulfilled.
4.
The high-speed mode I
2
C bus is available in the standard mode I
2
C bus system. At this time, the
conditions described below must be satisfied.
If the device does not extend the SCL0 signal low state hold time
t
SU:DAT
≥
250 ns
If the device extends the SCL0 signal low state hold time
Be sure to transmit the next data bit to the SDA0 line before the SCL0 line is released (t
Rmax.
+ t
SU:DAT
= 1000 + 250 = 1250 ns by standard mode I
2
C bus specification).
5.
Cb : total capacitance per one bus line (unit : pF)
相關PDF資料
PDF描述
μPD780024 8 Bit Single Chip Microcontrollers(8位單片微控制器)
μPD780021 8 Bit Single Chip Microcontrollers(8位單片微控制器)
μPD780022 8 Bit Single Chip Microcontrollers(8位單片微控制器)
μPD780023 8 Bit Single Chip Microcontrollers(8位單片微控制器)
μPD780031Y 8 Bit Single Chip Microcontrollers
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