參數(shù)資料
型號(hào): AD5252BRU50-RL7
廠商: ANALOG DEVICES INC
元件分類(lèi): 數(shù)字電位計(jì)
英文描述: 32-Tap. Nonvolatile. Linear-Taper Digital Potentiometers in SOT23
中文描述: DUAL 50K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 256 POSITIONS, PDSO14
封裝: MO-153AB-1, TSSOP-14
文件頁(yè)數(shù): 13/28頁(yè)
文件大?。?/td> 859K
代理商: AD5252BRU50-RL7
AD5251/AD5252
RDAC/EEMEM Quick Commands
The AD5251/AD5252 feature 12 quick commands that facilitate
easy manipulation of RDAC wiper settings and provide RDAC-
to-EEMEM storing and restoring functions. The command
Rev. 0 | Page 13 of 28
format is shown in Figure 11 and the command descriptions are
shown in Table 9.
0 WRITE
0
1 CMD
S
0
1
0
1
1
A
D
1
A
D
0
0
A
C
3
C
2
C
1
C
0
A
2
A
1
A
0
A
P
RDAC SLAVE ADDRESS
CMD/
REG
FROM MASTER TO SLAVE
FROM SLAVE TO MASTER
S = START CONDITION
P = STOP CONDITION
A = ACKNOWLEDGE (SDA LOW)
A = NOT ACKNOWLEDGE (SDA HIGH)
AD1, AD0 = I
C DEVICE ADDRESS BITS. MUST MATCH WITH THE LOGIC STATES AT PINS AD1, AD0
R/W = READ ENABLE BIT, LOGIC HIGH/WRITE ENABLE BIT, LOGIC LOW
CMD/REG = COMMAND ENABLE BIT, LOGIC HIGH/REGISTER ACCESS BIT, LOGIC LOW
C3, C2, C1, C0 = COMMAND BITS
A2, A1, A0
= RDAC/EEMEM REGISTER ADDRESSES
Figure 11. RDAC Quick Command Write (Dummy Write)
Table 9. RDAC-to-EEMEM Interface and RDAC Operation Quick Command Bits (CMD/REG = 1,
A2
= 0)
C3
C2
C1
C0
Command Description
0
0
0
0
NOP
0
0
0
1
Restore EEMEM (A1, A0) to RDAC (A1, A0)
1
0
0
1
0
Store RDAC (A1, A0) to EEMEM (A1, A0)
0
0
1
1
Decrement RDAC (A1, A0) 6 dB
0
1
0
0
Decrement all RDACs 6 dB
0
1
0
1
Decrement RDAC (A1, A0) one step
0
1
1
0
Decrement all RDACs one step
0
1
1
1
Reset: Restore EEMEMs to all RDACs
1
0
0
0
Increment RDACs (A1, A0) 6 dB
1
0
0
1
Increment all RDACs 6 dB
1
0
1
0
Increment RDACs (A1, A0) one step
1
0
1
1
Increment all RDACs one step
1
1
0
0
Reserved
:
:
:
:
1
1
1
1
Reserved
1
This command leaves the device in the EEMEM read power state, which consumes power. Users should issue the NOP command to return the device to the idle state.
Table 10. Address Table for Reading Tolerance (CMD/REG = 0, EE/RDAC = 1,
A4
= 1)
A4
A3
A2
A1
A0
Data Byte Description
0
0
0
0
0
Reserved
:
:
:
:
:
1
1
0
0
1
Reserved
1
1
0
1
0
Sign and 7-bit integer values of RDAC1 tolerance (read only)
1
1
0
1
1
8-bit decimal value of RDAC1 tolerance (read only)
1
1
1
0
0
Reserved
1
1
1
0
1
Reserved
1
1
1
1
0
Sign and 7-bit integer values of RDAC3 tolerance (read only)
1
1
1
1
1
8-bit decimal value of RDAC3 tolerance (read only)
相關(guān)PDF資料
PDF描述
AD5251BRU1-RL7 Memory Card Socket; No. of Contacts:50; Leaded Process Compatible:Yes; Mounting Type:Surface Mount; Peak Reflow Compatible (260 C):Yes; Gender:Male; No. of Rows:1; Width:31.60mm RoHS Compliant: Yes
AD5251EVAL Memory Card Socket; No. of Contacts:50; Leaded Process Compatible:Yes; Mounting Type:Surface Mount; Peak Reflow Compatible (260 C):Yes; Gender:Male; No. of Rows:1; Width:31.60mm RoHS Compliant: Yes
AD5252EVAL 32-Tap. Nonvolatile. Linear-Taper Digital Potentiometers in SOT23
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