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参数资料
| 型号： | MAX5395NATA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/17页 |
| 文件大小： | 0K |
| 描述： | IC DGTL POT 256POS 100KOHM 8TDFN |
| 标准包装： | 2,500 |
| 接片： | 256 |
| 电阻（欧姆）： | 100k |
| 电路数： | 1 |
| 温度系数： | 标准值 50 ppm/°C |
| 存储器类型： | 易失 |
| 接口： | I²C |
| 电源电压： | 1.7 V ~ 5.5 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | * |
| 封装/外壳： | * |
| 供应商设备封装： | * |
| 包装： | * |
14
Maxim Integrated
MAX5395
Single, 256-Tap Volatile, I2C, Low-Voltage Linear
Taper Digital Potentiometer
WIPER Command
The data byte writes to the wiper register and the
potentiometer moves to the appropriate position. D[7:0]
indicates the position of the wiper. D[7:0] = 0x00 moves
the wiper to the position closest to L. D[7:0] = 0xFF
moves the wiper closest to H. D[7:0] = 0x80 following
power-on.
SD_CLR Command
Removes any existing shutdown condition. Connects
all potentiometer terminals and returns the wiper to the
value stored in the wiper register. The command does
not affect the current status of the charge pump.
SD_H_WREG Command
Opens the H terminal and maintains the wiper at the
wiper register location. Writes cannot be made to the
wiper register while shutdown mode is engaged. Clearing
shutdown mode will close the H terminal and allow the
wiper register to be written. A RST will also deassert
shutdown mode and return the wiper to midscale (0x80).
This command does not affect the charge-pump status.
SD_H_ZERO Command
Moves wiper to zero-scale position (0x00) and opens the
H terminal. The wiper register remains unaltered. Writes
cannot be made to the wiper register while shutdown
mode is engaged. Clearing shutdown mode will return
the wiper to the position contained in the wiper register
and close the H terminal. A RST will also deassert
shutdown mode and return the wiper to midscale (0x80).
This command does not affect the charge-pump status.
SD_H_MID Command
Moves wiper to midscale position (0x80) and opens the
H terminal. The wiper register remains unaltered. Writes
cannot be made to the wiper register while shutdown
mode is engaged. Clearing shutdown mode will return
the wiper to the position contained in the wiper register
and close the H terminal. A RST will also deassert
shutdown mode and return the wiper to midscale (0x80).
This command does not affect the charge-pump status.
SD_H_FULL Command
Moves wiper to full-scale position (0xFF) and opens the
H terminal. The wiper register remains unaltered. Writes
cannot be made to the wiper register while shutdown
mode is engaged. Clearing shutdown mode will return
the wiper to the position contained in the wiper register
and close the H terminal. A RST will also deassert
shutdown mode and return the wiper to midscale (0x80).
This command does not affect the charge-pump status.
Table 3. I2C Write Command Byte Summary
COMMAND
ADDRESS BYTE
COMMAND BYTE
DATA BYTE
S
A6 A5 A4 A3 A2 A1 A0 R/W
A
C7 C6 C5 C4 C3 C2 C1 C0
A
D7 D6 D5 D4 D3 D2 D1 D0
A P
WIPER
See Table 1
0
D7 D6 D5 D4 D3 D2 D1 D0
SD_CLR
0
1
0
Don’t Care
SD_H_WREG
0
1
0
1
0
SD_H_ZERO
0
1
0
1
0
1
SD_H_MID
0
1
0
1
0
1
0
SD_H_FULL
0
1
0
1
0
1
SD_L_WREG
0
1
0
1
0
SD_L_ZERO
0
1
0
1
0
1
SD_L_MID
0
1
0
1
0
1
0
SD_L_FULL
0
1
0
1
0
1
SD_W
0
1
0
1
X
QP_OFF
0
1
0
1
0
QP_ON
0
1
0
1
0
1
RST
0
1
0
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