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参数资料
| 型号： | MAX5484EUD+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 8/20页 |
| 文件大小： | 0K |
| 描述： | IC POT DGTL 10BIT NV 14-TSSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 接片： | 1024 |
| 电阻（欧姆）： | 50k |
| 电路数： | 1 |
| 温度系数： | 标准值 35 ppm/°C |
| 存储器类型： | 非易失 |
| 接口： | 4 线串行（芯片选择，递增，增/减） |
| 电源电压： | 2.7 V ~ 5.25 V，±2.5 V ~ 5.25 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 14-TSSOP |
| 包装： | 带卷 (TR) |
10-Bit, Nonvolatile, Linear-Taper Digital
Potentiometers
Copy Wiper Register to NV Register
The copy wiper register to NV register command (C1,
C0 = 10) stores the current position of the wiper to the
NV register for use at power-up. Figure 6 shows how to
copy data from wiper register to NV register. The oper-
ation takes up to 12ms (max) after
CS goes high to
complete and no other operation should be performed
until completion.
Copy NV Register to Wiper Register
The copy NV register to wiper register (C1, C0 = 11)
restores the wiper position to the current value stored in
the NV register. Figure 7 shows how to copy data from
the NV register to the wiper register.
Digital Up/Down Interface
Figure 8 illustrates an up/down serial-interface timing
diagram. In digital up/down interface mode (SPI/
UD =
0), the logic inputs
CS, DIN(U/D), and SCLK(INC) con-
trol the wiper position and store it in nonvolatile memory
(see Table 3). The chip-select (
CS) input enables the
serial interface when low and disables the interface
when high. The position of the wiper is stored in the
nonvolatile register when
CS transitions from low to
high while SCLK(
INC) is high.
When the serial interface is active (
CS low), a high-to-
low (falling edge) transition on SCLK(
INC) increments
or decrements the internal 10-bit counter depending on
the state of DIN(U/
D). If DIN(U/D) is high, the wiper
increments. If DIN(U/
D) is low, the wiper decrements.
The device stores the value of the wiper position in the
nonvolatile memory when
CS transitions from low to high
while SCLK(
INC) is high. The host system can disable
the serial interface and deselect the device without stor-
ing the latest wiper position in the nonvolatile memory by
keeping SCLK(
INC) low while taking CS high.
Upon power-up, the MAX5481–MAX5484 load the
value of nonvolatile memory into the wiper register, and
set the wiper position to the value last stored.
ACTION
00
1
0
00
0
12
3
4
5
6
78
CS
C1
C0
WRITE NV
REGISTER
(DEVICE IS
BUSY)
tBUSY
SCLK(INC)
DIN(U/D)
Figure 6. Copy Wiper Register to NV Register Operation
CS
DIN(U/D)
SCLK(INC)W
LL
↓
Decrement
LH
↓
Increment
LX
↑
No Change
H
X
No Change
↓
X
No Change
↑
X
L
Position Not Stored
↑
X
H
Position Stored
Table 3. Truth Table
↑ = Low-to-high transition.
↓ = High-to-low transition.
X
= Don’t care.
ACTION
00
1
00
0
12
3
4
5
6
78
CS
C1
C0
WIPER
REGISTER
UPDATED
SCLK(INC)
DIN(U/D)
Figure 7. Copy NV Register to Wiper Register Operation
MAX5481–MAX5484
16
Maxim Integrated
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| MAX5487ETE#G16 | 功能描述:数字电位计 IC RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
| MAX5487ETE#TG16 | 功能描述:数字电位计 IC RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
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