71m6543h-igtr/f Maxim Integrated Products, Inc., 71m6543h-igtr/f Datasheet - Page 115

• Manufacturer Part Number: 71m6543h-igtr/f
• Description: Energy Meter Ic
• Manufacturer: Maxim Integrated Products, Inc.

v1.0
Name
TEMP_PWR
TEMP_START
TMUX[5:0]
TMUX2[4:0]
TMUXR2[2:0]
TMUXR4[2:0]
TMUXR6[2:0]
VERSION[7:0]
VREF_CAL
VREF_DIS
VSTAT[2:0]
SFR F9[2:0]
Location Rst Wk Dir
2502[5:0]
2503[4:0]
270A[2:0]
270A[6:4]
2709[2:0]
2706[7:0]
28A0[6]
28B4[6]
2704[7]
2704[6]
000 000 R/W
0
0
–
–
–
0
0
–
–
0
–
–
–
0
1
–
© 2008–2011 Teridian Semiconductor Corporation
R/W
R/W
R/W
R/W
R/W
R/W
R
R
Description
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.
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.
Selects one of 32 signals for TMUXOUT. See
Selects one of 32 signals for TMUX2OUT. See
The TMUX setting for the remote isolated sensors (71M6xx3).
The silicon version index. This word may be read by firmware to determine the silicon
version.
Brings the ADC reference voltage out to the VREF pin. This feature is disabled when
VREF_DIS=1.
Disables the internal ADC voltage reference.
This word describes the source of power and the status of the VDD.
VERSION[7:0]
VSTAT[2:0] Description
0001 0001
0001 0011
0001 0011
000
001
010
011
101
System Power OK. V3P3A>3.0v. Analog modules are functional and
accurate. [V3AOK,V3OK]=11
System Power Low. 2.8v<V3P3A<3.0v. Analog modules not accurate.
Switch over to battery power is imminent. [V3AOK,V3OK]=01
Battery power and VDD OK. VDD>2.25v. Full digital functionality.
[V3AOK,V3OK]=00, [VDDOK,VDDgt2]=11
Battery power and VDD>2.0. Flash writes are inhibited. If the
TRIMVDD[5] fuse is blown, PLL_FAST is cleared.
[V3AOK,V3OK]=00, [VDDOK,VDDgt2]=01
Battery power and VDD<2.0. When VSTAT=101, processor is nearly
out of voltage. Processor failure is imminent.
[V3AOK,V3OK]=00, [VDDOK,VDDgt2]=00
Silicon Version
A01
A03
B01
2.5.14
2.5.14
for details.
for details.
71M6543F/H Data Sheet
115