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參數(shù)資料
型號(hào)： ADM00317
廠商： Microchip Technology
文件頁數(shù)： 86/86頁
文件大?。?/td> 0K
描述： BOARD DAUGHTER MCP4706/16/26
標(biāo)準(zhǔn)包裝： 1
DAC 的數(shù)量： 3 個(gè)，每 IC 1 個(gè)
位數(shù)： 8，10，12
設(shè)置時(shí)間： 6µs
DAC 型： 電壓
已供物品： 子板
已用 IC / 零件： MCP4706，MCP4716，MCP4726
2011-2012 Microchip Technology Inc.
DS22272C-page 9
MCP4706/4716/4726
FIGURE 1-4:
I2C Bus Data Timing.
90
91
92
100
101
103
106
107
109
110
102
SCL
SDA
In
SDA
Out
TABLE 1-3:
I2C BUS DATA REQUIREMENTS (SLAVE MODE)
I2C AC Characteristics
Standard Operating Conditions (unless otherwise specified)
Operating Temperature
-40
°C ≤ TA ≤ +125°C (Extended)
Operating Voltage VDD range is described in Electrical Characteristics
Param.
No.
Sym
Characteristic
Min
Max
Units
Conditions
100
THIGH
Clock high time
100 kHz mode
4000
—
ns
2.7V-5.5V
400 kHz mode
600
—
ns
2.7V-5.5V
1.7 MHz mode
120
ns
4.5V-5.5V
3.4 MHz mode
60
—
ns
4.5V-5.5V
101
TLOW
Clock low time
100 kHz mode
4700
—
ns
2.7V-5.5V
400 kHz mode
1300
—
ns
2.7V-5.5V
1.7 MHz mode
320
ns
4.5V-5.5V
3.4 MHz mode
160
—
ns
4.5V-5.5V
Note 1:
As a transmitter, the device must provide this internal minimum delay time to bridge the undefined region
(minimum 300 ns) of the falling edge of SCL to avoid unintended generation of Start or Stop conditions.
2:
A Fast mode (400 kHz) I2C bus device can be used in a Standard mode (100 kHz) I2C bus system, but
the requirement tSU;DAT ≥ 250 ns must then be met. This will automatically be the case if the device does
not stretch the Low period of the SCL signal. If such a device does stretch the Low period of the SCL
signal, it must output the next data bit to the SDA line.
TR max.+tSU;DAT = 1000 + 250 = 1250 ns (according to the Standard mode I
2C bus specification) before
the SCL line is released.
3:
The MCP47X6 device must provide a data hold time to bridge the undefined part between VIH and VIL of
the falling edge of the SCL signal. This specification is not a part of the I2C specification, but must be tested
in order to ensure that the output data will meet the setup and hold specifications for the receiving device.
4:
Use Cb in pF for the calculations.
5:
Not Tested. This parameter ensured by characterization.
6:
A Master Transmitter must provide a delay to ensure that difference between SDA and SCL fall times do
not unintentionally create a Start or Stop condition.
If this parameter is too short, it can create an unintentional Start or Stop condition to other devices on the
I2C bus line. If this parameter is too long, the Data Input Setup (TSU:DAT) or Clock Low time (TLOW) can be
affected.
Data Input: This parameter must be longer than tSP.
Data Output: This parameter is characterized, and tested indirectly by testing TAA parameter.
7:
Ensured by the TAA 3.4 MHz specification test.
8:
The specification is not part of the I
2
C specification. TAA = THD:DAT + TFSDA (or TRSDA).
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