ADE5166_08 AD [Analog Devices], ADE5166_08 Datasheet - Page 68

• Manufacturer Part Number: ADE5166_08
• Description: Single-Phase Energy Measurement IC with 8052 MCU, RTC, and LCD Driver
• Manufacturer: AD [Analog Devices]

ADE5166/ADE5169
TEMPERATURE, BATTERY, AND SUPPLY VOLTAGE MEASUREMENTS
The ADE5166/ADE5169 include temperature measurements as
well as battery and supply voltage measurements. These measure-
ments enable many forms of compensation. The temperature and
supply voltage measurements can be used to compensate external
circuitry. The RTC can be calibrated over temperature to ensure
that it does not drift. Supply voltage measurements allow the LCD
contrast to be maintained despite variations in voltage. Battery
measurements allow low battery detection to be performed.
Table 48. Temperature, Battery, and Supply Voltage Measurement SFRs
SFR
Address
0xF9
0xF3
0xD8
0xFA
0xEF
0xDF
0xD7
Table 49. Peripheral ADC Strobe Period SFR (STRBPER, Address 0xF9)
Bit
[7:6]
[5:4]
[3:2]
[1:0]
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Mnemonic
Reserved
VDCIN_PERIOD
BATT_PERIOD
TEMP_PERIOD
00
0
0
0
Mnemonic
STRBPER
DIFFPROG
ADCGO
BATVTH
VDCINADC
BATADC
TEMPADC
Default
Description
Temperature and supply delta (see Table 50).
Start ADC measurement (see Table 51).
Battery detection threshold (see Table 52).
V
Battery ADC value (see Table 54).
Temperature ADC value (see Table 55).
Description
These bits must be kept at 0 for proper operation.
Period for background external voltage measurements.
VDCIN_PERIOD
00
01
10
11
Period for background battery level measurements.
BATT_PERIOD
00
01
10
11
Period for background temperature measurements.
TEMP_PERIOD
00
01
10
11
Peripheral ADC strobe period (see Table 49).
DCIN
ADC value (see Table 53).
Rev. 0 | Page 68 of 148
All ADC measurements are configured through the SFRs, as
shown in Table 48.
The temperature, battery, and supply voltage measurements
can be configured to continue functioning in PSM1 and PSM2.
Keeping the temperature measurement active ensures that it is
not necessary to wait for the temperature measurement to settle
before using it for compensation.
Result
No V
8 min
2 min
1 min
Result
No battery measurement
16 min
4 min
1 min
Result
No temperature measurement
8 min
2 min
1 min
DCIN
measurement