71M6541D Datasheet, PDF (123/166 Pages) Maxim Integrated Products – 0.1% Accuracy Over 2000:1 Current Range Energy Meter ICs

Name
TEMP_22[10:8]
TEMP_22[7:0]
TEMP_BAT
TEMP_BSEL
TBYTE_BUSY
TEMP_PER[2:0]
TEMP_PWR
TEMP_START
TMUX[5:0]
TMUX2[4:0]
TMUXRA[2:0]
VERSION[7:0]
VREF_CAL
VREF_DIS
Location
230A[2:0]
230B[7:0]
28A0[4]
28A0[7]
28A0[3]
28A0[2:0]
28A0[6]
28B4[6]
2502[5:0]
2503[4:0]
270A[2:0]
2706[7:0]
2704[7]
2704[6]
71M6541D/F/G and 71M6542F/G Data Sheet
Rst Wk Dir Description
0 – R Storage location for STEMP at 22C. STEMP is an 11-bit word.
0
–
R/W
Causes VBAT to be measured whenever a temperature measurement is
performed.
0
–
R/W
Selects which battery is monitored by the temperature sensor: 1 = VBAT,
0 = VBAT_RTC
Indicates that hardware is still writing the 0x28A0 byte. Additional writes to
0 0 R this byte will be locked out while it is one. Write duration could be as long as
6ms.
Sets the period between temperature measurements. Automatic measurements
can be enabled in any mode (MSN, BRN, LCD, or SLP). TEMP_PER = 0
disables automatic temperature updates, in which case TEMP_START may be
used by the MPU to initiate a one-shot temperature measurement.
0 – R/W _{TEMP_PER Time (seconds)}
0
No temperature updates
1-6
2^(3+TEMP_PER)
7
Continuous updates
Selects the power source for the temp sensor:
0 – R/W 1 = V3P3D, 0 = VBAT_RTC. This bit is ignored in SLP and LCD modes,
where the temp sensor is always powered by VBAT_RTC.
When TEMP_PER = 0 automatic temperature measurements are disabled,
0
0
R/W
and TEMP_START may be set by the MPU to initiate a one-shot temperature
measurement. TEMP_START is ignored in SLP and LCD modes. Hardware
clears TEMP_START when the temperature measurement is complete.
– – R/W Selects one of 32 signals for TMUXOUT. See 2.5.12 for details.
– – R/W Selects one of 32 signals for TMUX2OUT. See 2.5.12 for details.
000000 R/W The TMUX setting for the remote isolated sensor (71M6x01).
The silicon version index. This word may be read by firmware to determine
the silicon version.
– – R VERSION[7:0] Silicon Version
0001 0011
B01
0010 0010
B02
0
0
R/W
Brings the ADC reference voltage out to the VREF pin. This feature is disabled
when VREF_DIS=1.
0 1 R/W Disables the internal ADC voltage reference.