ade7169f16 Analog Devices, Inc., ade7169f16 Datasheet - Page 66

• Manufacturer Part Number: ade7169f16
• Description: Single-phase Energy Measurement Ic With 8052 Mcu, Rtc And Lcd Driver
• Manufacturer: Analog Devices, Inc.

Preliminary Technical Data
TEMPERATURE, BATTERY AND SUPPLY
VOLTAGE MEASUREMENTS
The ADE7169F16 includes temperature measurements as well
as battery and supply voltage measurements. These
measurements 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 doesn’t drift. Supply voltage
measurements allow the LCD contrast to be maintained despite
Table 44. Temperature, Battery and Supply voltage measurement SFRs
address
Table 45. Peripheral ADC Strobe Period SFR (STRBPER, 0xF9)
(hex)
0xD8
0xDF
0xD7
0xFA
0xEF
0xF9
0xF3
Note: The strobing option only work when the RTCEN bit in RTC Configuration SFR (TIMECON, 0xA1) is set.
SFR
Bit
Location
7-6
5-4
3-2
1-0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Bit
Mnemonic
Reserved
VSW_PERIOD[1:0]
BATT_PERIOD[1:0]
TEMP_PERIOD[1:0]
DIFFPROG
TEMPADC
VSWADC
STRBPER
BATVTH
BATADC
ADCGO
Name
Default
Value
-
0
0
0
TEMP_PERIOD[1:0]
Description
Reserved
Period for background supply voltage measurements
VSW_PERIOD[1:0]
0
0
1
1
Period for background battery level measurements
BATT_PERIOD[1:0]
0
0
1
1
Period for background temperature measurements
0
0
1
Rev. PrD | Page 66 of 140
Temperature and supply Delta configuration
0
1
0
1
0
1
0
1
0
1
0
Battery threshold configuration
Strobing period configuration
variations in voltage. Battery measurements allow low battery
detection to be performed. All ADC measurements are
configured through the SFR detailed in Table 44.
The temperature, battery and supply voltage measurements can
be configured to still be functional in PSM1 and PSM2. This is
done bit setting bit RTCEN in the RTC Configuration SFR
(TIMECON, 0xA1). Maintaining the temperature measurement
active ensures that it is not necessary to wait for the temperature
measurement to settle before using it for compensation.
ADC start configuration
Temperature ADC value
Battery ADC value
No VSW measurement
8 minutes
2 minutes
1 minute
No Battery measurement
16 minutes
4 minutes
1 minute
No Temperature measurements
8 minutes
2 minutes
VSW ADC value
Description
ADE7169F16