參數(shù)資料
型號: AD5245BRJZ10-RL7
廠商: Analog Devices Inc
文件頁數(shù): 9/20頁
文件大?。?/td> 0K
描述: IC DGTL POT 256POS SOT-23-8 T/R
標(biāo)準(zhǔn)包裝: 3,000
接片: 256
電阻(歐姆): 10k
電路數(shù): 1
溫度系數(shù): 標(biāo)準(zhǔn)值 45 ppm/°C
存儲器類型: 易失
接口: I²C(設(shè)備位址)
電源電壓: 2.7 V ~ 5.5 V
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: SOT-23-8
供應(yīng)商設(shè)備封裝: SOT-23-8
包裝: 帶卷 (TR)
AD5245
Rev. B | Page 17 of 20
Table 8
. Write Mode
S 0 1 0 1 1 0 AD0
W
A
X
RS
SD
X
A
D7
D6
D5
D4
D3
D2
D1
D0
A
P
Slave Address Byte
Instruction Byte
Data Byte
Table 9. Read Mode
S
0
1
0
1
0
AD0
R
A
D7
D6
D5
D4
D3
D2
D1
D0
A
P
Slave Address Byte
Data Byte
S = START condition
P = STOP condition
A = Acknowledge
X = Don’t care
W = Write
R = Read
RS = Reset wiper to midscale 0x80
SD = Shutdown connects wiper to B terminal and open circuits
A terminal, but does not change contents of wiper register
D7, D6, D5, D4, D3, D2, D1, D0 = Data Bits
t1
t3
t4
t2
t7
t8
t9
PS
P
S
t10
t5
t9
t8
SCL
SDA
t2
t6
0
34
36
-0
4
3
Figure 44. I2C Interface Detailed Timing Diagram
SCL
FRAME 1
FRAME 2
START BY
MASTER
ACK BY
AD5245
SLAVE ADDRESS BYTE
STOP BY
MASTER
INSTRUCTION BYTE
SDA
0
1
0
1
0 AD0 R/W
XRS
X
1
9
19
D7
D6
D5
D4
D3
D2
D1
D0
ACK BY
AD5245
FRAME 3
DATA BYTE
1
9
ACK BY
AD5245
SD
0
343
6-
04
4
Figure 45. Writing to the RDAC Register
NO ACK
BY MASTER
SCL
SDA
01
0
1
0
AD0
R/W
D7
D6
D5
D4
D3
D2
D1
D0
1
9
1
9
FRAME 1
FRAME 2
START BY
MASTER
ACK BY
AD5245
SLAVE ADDRESS BYTE
RDAC REGISTER
STOP BY
MASTER
0343
6-
045
Figure 46. Reading Data from a Previously Selected RDAC Register in Write Mode
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