ds1841nt-r Maxim Integrated Products, Inc., ds1841nt-r Datasheet - Page 12

• Manufacturer Part Number: ds1841nt-r
• Description: Ds1841 - New! - Temperature-controlled, Nv, I?c, Logarithmic Resistor
• Manufacturer: Maxim Integrated Products, Inc.

Register 0Ah: Control Register 2 (CR2)
Register 0Ch: Temperature Result (TEMP)
Register 0Eh: Supply Voltage Result (VOLTAGE)
Temperature-Controlled, NV, I
Logarithmic Resistor
12
0Ah
0Ch
0Eh
______________________________________________________________________________________
FACTORY DEFAULT
MEMORY TYPE
Bit 7
Bits 7 to 3
Bit 2
Bit 1
Bit 0
Control Register 2 controls how the wiper position is determined.
FACTORY DEFAULT
MEMORY TYPE
Bit 7
This register holds the current temperature result. It is updated every conversion time, t
temperature, treat the two’s complement binary value as an unsigned binary number, then convert it to decimal. If the
result is greater than or equal to 128, subtract 256 from the result. This register is only updated when the Update Mode
bit = 1. When the Update Mode bit = 0, no ADC updates are made to this register.
FACTORY DEFAULT
MEMORY TYPE
Bit 7
This register holds the current supply voltage result. It is updated every conversion time, t
Monitoring section. This register is only updated when the Update Mode bit = 1. When the Update Mode bit = 0, no ADC
updates are made to this register.
Reserved
Sign
Reserved.
Wiper Access Control This bit is valid only in LUT Mode and in LUT Adder Mode.
0 = (Default) WR is loaded with the value from IVR summed with LUTVAL, or just the value of LUTVAL
based on the state of the Adder Mode bit.
1 = The DS1841 is placed in a manual mode, allowing WR (address 09h) to be programmed using I
commands.
LUTAR Mode This bit is valid only in LUT Mode and in LUT Adder Mode.
0 = (Default) The LUTAR value, located in at address 08h, is calculated following each temperature
conversion that points to the corresponding location in the LUT.
1 = Automatic updates of LUTAR are disabled, allowing the LUTAR register to be programmed using I
commands.
Reserved. This bit must be set to a 0.
Reserved
2
6
00h
Volatile
None
Volatile
None
Volatile
Reserved
2
5
Reserved
2
4
Supply Voltage
Reserved
2
3
2
C,
Access
Control
Wiper
2
2
FRAME
FRAME
LUTAR Mode
. To calculate the
. See the Supply Voltage
2
1
Reserved
2
0
2
C
Bit 0
Bit 0
Bit 0
2
C