Datasheet

Dual, Temperature-Controlled Resistors with Inter-
nally Calibrated Monitors and Password Protection
24 Maxim Integrated
DS1856
Offset
0
• V
CC
Offset.................. <R-pw2/W-pw2><NV><0000h> Allows for offset control of V
CC
measurement if desired.
• MON1 Offset ............. <R-pw2/W-pw2><NV><0000h> Allows for offset control of MON1
measurement if desired.
• MON2 Offset ............. <R-pw2/W-pw2><NV><0000h> Allows for offset control of MON2
measurement if desired.
Offset
1
•
MON3 Offset ............. <R-pw2/W-pw2><NV><0000h> Allows for offset control of MON3
measurement if desired.
• Temp Offset ............... <R-pw2/W-pw2><NV><0000h> Allows for offset control of Temp
measurement if desired.
PWD Value
• Password 1................ <R-NA/W-pw2><NV><FFFFFFFFh> The PWE value is compared
against the value written to this location to enable PW1 access. At
power-on, the PWE value is set to all ones. Thus writing these bytes to
all ones grants PW1 access on power-up without writing the password entry.
• Password 2................ <R-NA/W-pw2><NV><FFFFFFFFh> The PWE value is compared
against the value written to this location to enable PW2 access. At
power-on, the PWE value is set to all ones. Thus writing these bytes to
all ones grants PW2 access on power-up without writing the password entry.
LUT
• Res0 ........................... The unsigned value for Resistor 0.
• Res1 ........................... The unsigned value for Resistor 1.
Scale
0
• V
CC
Scale................... <R-pw2/W-pw2><NV><6.5535V> Controls the Scaling or Gain of the
V
CC
measurements.
• MON1 Scale.............. <R-pw2/W-pw2><NV><2.500V> Controls the Scaling or Gain of the
MON1 measurements.
• MON2 Scale.............. <R-pw2/W-pw2><2.500V> Controls the Scaling or Gain of the
MON2 measurements.
Scale
1
• MON3 Scale.............. <R-pw2/W-pw2><NV><2.500V> Controls the Scaling or Gain of the
MON3 measurements.
Register Descriptions (continued)