Datasheet

71M6543F/71M6543G Data Sheet
114 v2
Name Location
Rst
Wk Dir Description
TEMP_BAT
28A0[4]
0
–
R/W
Causes VBAT to be measured whenever a temperature measurement is performed.
TEMP_BSEL
28A0[7] 0 – R/W
Selects which battery is monitored by the temperature sensor:
1 = VBAT, 0 = VBAT_RTC
TEMP_PER[2:0]
28A0[2:0] 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
Time (seconds)
0
No temperature updates
1-6
)PER_TEMP3(
2
+
7
Continuous updates
TEMP_PWR
28A0[6] 0 – R/W
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_START
28B4[6] 0 0 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.
TMUX[5:0]
2502[5:0]
–
–
R/W
Selects one of 32 signals for TMUXOUT. See 2.5.14 for details.
TMUX2[4:0]
2503[4:0]
–
–
R/W
Selects one of 32 signals for TMUX2OUT. See 2.5.14 for details.
TMUXR2[2:0]
TMUXR4[2:0]
TMUXR6[2:0]
270A[2:0]
270A[6:4]
2709[2:0]
000
000
R/W The TMUX setting for the remote isolated sensors (71M6xx3).
VERSION[7:0]
2706[7:0] – – R
The silicon version index. This word may be read by firmware to determine the silicon
version.
VERSION[7:0]
71M6543F
Silicon Version
71M6543G
Silicon Version
0001 0001
A01
A01
0001 0011
A03
N/A
0001 0011
B01
N/A
0010 0010
B02
N/A
VREF_CAL
2704[7] 0 0 R/W
Brings the ADC reference voltage out to the VREF pin. This feature is disabled when
VREF_DIS=1.
VREF_DIS
2704[6]
0
1
R/W
Disables the internal ADC voltage reference.