OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

DS3901E+

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
DS3901
Triple, 8-Bit NV Variable Resistor
with Dual Settings and User EEPROM
10 ____________________________________________________________________
MEMORY REGISTERS 80h–83h: PW1 EEPROM
Factory Default: 00h
Access Without Password: Read only
Access With PW1 Password: Read and Write
Access With PW2 Password: Read and Write
Memory Type: Nonvolatile (EEPROM)
80h–83h EEPROM
MEMORY REGISTER 84h: CONFIGURATION REGISTER
Factory Default: 00h
Access Without Password: Read only
Access With PW1 Password: Read and Write
Access With PW2 Password: Read and Write
Memory Type: Nonvolatile (EEPROM)
L0_SW BSC HiZ2 HiZ1 HiZ0
84h
b7 b0
bits 7–5 These bits are set to 0.
bit 4
L0_SW: Selectable switch (see the Block Diagram) that allows for an external shunt resistor to be connected to the
L0 pin.
0 = Switch L0_SW is open (default).
1 = Switch L0_SW is closed.
bit 3
BSC: A control bit that, when OR’d with the state of the BK_SEL pin, selects which bank of registers will be used to
determine the setting of Resistors 0, 1, and 2.
0 = BK_SEL pin determines which bank settings are used.
1 = Bank 1 settings are used.
bit 2
HiZ2: A control bit used to select a high-impedance state for Resistor 2.
If the DIS pin is high, all resistors are high impedance regardless of Hi-Z control pin state. If the DIS pin is low, then
the following is true:
0 = Resistor 2 is not in a high-impedance state (default).
1 = Resistor 2 is placed in a high-impedance state.
bit 1
HiZ1: A control bit used to select a high-impedance state for Resistor 1.
If the DIS pin is high, all resistors are high impedance regardless of Hi-Z control pin state. If the DIS pin is low, then
the following is true:
0 = Resistor 1 is not in a high-impedance state (default).
1 = Resistor 1 is placed in a high-impedance state.
bit 0
HiZ0: A control bit used to select a high-impedance state for Resistor 0.
If the DIS pin is high, all resistors are high impedance regardless of Hi-Z control pin state. If the DIS pin is low, then
the following is true:
0 = Resistor 0 is not in a high-impedance state. (Default)
1 = Resistor 0 is placed in a high-impedance state.
DS3901
Triple, 8-Bit NV Variable Resistor
with Dual Settings and User EEPROM
____________________________________________________________________ 11
There are two passwords for the DS3901, the PW1
password and the PW2 password. The memory map
register descriptions indicate the type of access granted
for each level of password used. See the Password
Protection section for details on password access.
MEMORY REGISTERS 85h–87h: PW1 EEPROM
Factory Default: 00h
Access Without Password: Read only
Access With PW1 Password: Read and Write
Access With PW2 Password: Read and Write
Memory Type: Nonvolatile (EEPROM)
85h–87h EEPROM
MEMORY REGISTERS 88h-8Bh: PASSWORD ENTRY
Factory Default: 00000000h
Access Without Password: Write only
Access With PW1 Password: Write only
Access With PW2 Password: Write only
Memory Type: Volatile (SRAM)
88h 2
31
2
30
2
29
2
28
2
27
2
26
2
25
2
24
89h 2
23
2
22
2
21
2
20
2
19
2
18
2
17
2
16
8Ah 2
15
2
14
2
13
2
12
2
11
2
10
2
9
2
8
8Bh 2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
b7 b0
MEMORY REGISTERS 8Ch–8Eh: SRAM
Factory Default: 00h
Access Without Password: Read and Write
Access With PW1 Password: Read and Write
Access With PW2 Password: Read and Write
Memory Type: Volatile (SRAM)
8Ch-8Eh SRAM
DS3901
Triple, 8-Bit NV Variable Resistor
with Dual Settings and User EEPROM
12 ____________________________________________________________________
MEMORY REGISTER 8Fh: STATUS
Factory Default: 000x000xb
Access Without Password: Read only
Access With PW1 Password: Read only
Access With PW2 Password: Read only
Memory Type: Volatile (SRAM)
8Fh 0 0 0 BSS 0 0 0 DISS
b7 b0
bits 7–5 These bits are 0.
bit 4
BSS: A status bit that indicates the state of the BK_SEL pin.
0 = BK_SEL pin is low.
1 = BK_SEL pin is high.
bits 3–1 These bits are 0.
bit 0
DISS: A status bit that indicates the state of the DIS pin.
0 = DIS pin is low. Hi-Z control bits can be used to select high-impedance state for each resistor.
1 = DIS pin is high. All resistors are in a high-impedance state.
MEMORY REGISTERS 90h–93h: PW1 PASSWORD SETTING
Factory Default: 00000000h
Access Without Password: None
Access With PW1 Password: None
Access With PW2 Password: Write only
Memory Type: Nonvolatile (EEPROM)
90h 2
31
2
30
2
29
2
28
2
27
2
26
2
25
2
24
91h 2
23
2
22
2
21
2
20
2
19
2
18
2
17
2
16
92h 2
15
2
14
2
13
2
12
2
11
2
10
2
9
2
8
93h 2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
b7 b0
These four bytes contain the password used to access
memory that is protected by the PW1 password.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

DS3901E+

Mfr. #:
Buy DS3901E+
Manufacturer:
Maxim Integrated
Description:
Digital Potentiometer ICs Tri 8Bit NV Variable w/Dual Stgs & EEPROM
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet