71M6543F/H and 71M6543G/GH Data Sheet
Name
Location Rst Wk Dir Description
TEMP_BAT
28A0[4]
0
–
R/W Causes VBAT to be measured whenever a temperature measurement is performed.
Selects which battery is monitored by the temperature sensor:
1 = VBAT, 0 = VBAT_RTC
TEMP_BSEL
28A0[7]
0
–
R/W
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.
TEMP_PER[2:0]
28A0[2:0]
0
–
R/W
Time (seconds)
TEMP_PER
0
No temperature updates
(3+TEMP _ PER)
1-6
7
2
Continuous updates
Selects the power source for the temp sensor:
1 = V3P3D, 0 = VBAT_RTC.
This bit is ignored in SLP and LCD modes, where the temp sensor is always powered
by VBAT_RTC.
TEMP_PWR
28A0[6]
28B4[6]
0
0
–
0
R/W
R/W
When TEMP_PER = 0 automatic temperature measurements are disabled, 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.
TEMP_START
TMUX[5:0]
2502[5:0]
2503[4:0]
270A[2:0]
–
–
–
–
R/W Selects one of 32 signals for TMUXOUT. See 2.5.14 for details.
R/W Selects one of 32 signals for TMUX2OUT. See 2.5.14 for details.
TMUX2[4:0]
TMUXR2[2:0]
TMUXR4[2:0]
TMUXR6[2:0]
270A[6:4] 000000 R/W The TMUX setting for the remote isolated sensors (71M6xx3).
2709[2:0]
The silicon version index. This word may be read by firmware to determine the silicon
version.
71M6543F/H
Silicon Version
71M6543G/GH
Silicon Version
VERSION[7:0]
VERSION[7:0]
2706[7:0]
–
–
R
0001 0001
0001 0011
0001 0011
0010 0010
A01
A03
B01
B02
A01
N/A
N/A
N/A
Brings the ADC reference voltage out to the VREF pin. This feature is disabled when
VREF_DIS=1.
VREF_CAL
VREF_DIS
2704[7]
2704[6]
0
0
0
1
R/W
R/W Disables the internal ADC voltage reference.
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