參數(shù)資料
型號(hào)： DS3930E
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 11/12頁(yè)
文件大?。?/td> 0K
描述： IC POT NV HEX I/O MEM 20-TSSOP
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 74
接片： 256
電阻（歐姆）： 16.5k
電路數(shù)： 6
溫度系數(shù)： 標(biāo)準(zhǔn)值 ±250 ppm/°C
存儲(chǔ)器類型： 非易失
接口： I²C（設(shè)備位址）
電源電壓： 2.7 V ~ 5.5 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 20-TSSOP（0.173"，4.40mm 寬）
供應(yīng)商設(shè)備封裝： 20-TSSOP
包裝： 管件
DS3930
Hex Nonvolatile Potentiometer with
I/O and Memory
8
______________________________________________________________________
I/O Signals
The I/O pins can be used as general-purpose digital
I/O signals. The I/O pins have CMOS outputs with an
internal pullup resistor (see Figure 2). The I/O pins are
configured with the I/O Control register (F6h) and moni-
tored with the I/O State register (F7h). The I/O Control
register controls the state of the internal pullup resistor
(RI/O) with bits 7 to 4 and the I/O pin setting with bits 3
to 0 (see Table 1). The read-only values of the I/O State
register contains the values of the I/O pin setting bits of
the I/O Control register unless the I/O output is tri-stat-
ed. When the I/O is tri-stated the I/O State register will
read high or low depending on the external source on
the I/O pin. Since the I/O pins are controlled by EEP-
ROM, the number of writes is limited.
Memory
The memory map is shown in Table 2.
Table 2. Memory Map
ADDRESS
BIT
DEFAULT (HEX)
FUNCTION
00h to 3Fh
FF
64 bytes of general-purpose EEPROM
40h to EFh
FF
Reserved
F0h
FF
Controls potentiometer 0
F1h
FF
Controls potentiometer 1
F2h
FF
Controls potentiometer 2
F3h
FF
Controls potentiometer 3
F4h
FF
Controls potentiometer 4
F5h
FF
Controls potentiometer 5
F6h
0F
I/O Control
Bit 7
Set to 0 to enable I/O3 pullup, set to 1 to disable pullup
Bit 6
Set to 0 to enable I/O2 pullup, set to 1 to disable pullup
Bit 5
Set to 0 to enable I/O1 pullup, set to 1 to disable pullup
Bit 4
Set to 0 to enable I/O0 pullup, set to 1 to disable pullup
Bit 3
Sets I/O3 to 0 or 1
Bit 2
Sets I/O2 to 0 or 1
Bit 1
Sets I/O1 to 0 or 1
Bit 0
Sets I/O0 to 0 or 1
F7h
0X
I/O State
Bit 7
0
Bit 6
0
Bit 5
0
Bit 4
0
Bit 3
Contains state of I/O3 pin (read only)
Bit 2
Contains state of I/O2 pin (read only)
Bit 1
Contains state of I/O1 pin (read only)
Bit 0
Contains state of I/O0 pin (read only)
F8h to FFh
FF
Reserved
PULLUP CTRL
(I/O CONTROL
REGISTER)
(BITS 7 TO 4)
I/O PIN SETTING
(I/O CONTROL
REGISTER)
(BITS 3 TO 0)
I/O PIN OUTPUT
00
0
01
1
10
0
11
Pullup disabled (HI-Z)
Table 1. I/O Pin Truth Table
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參數(shù)描述
DS3930E/T&R 制造商:Maxim Integrated Products 功能描述:HEX NV POT WITH I/O & MEM T&R - Tape and Reel
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DS3930E+T&R 制造商:Maxim Integrated Products 功能描述: 制造商:Maxim Integrated Products 功能描述:DGTL POTENTIOMETER 256POS 16.5KOHM HEX 20TSSOP - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC POT NV HEX I/O MEM 20-TSSOP 制造商:Maxim Integrated Products 功能描述:Digital Potentiometer ICs Hex Nonvolatile w/I/O & Memory
DS3930E+T&R 功能描述:數(shù)字電位計(jì) IC Hex Nonvolatile w/I/O & Memory RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲(chǔ)器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel
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