ADE5166_08 AD [Analog Devices], ADE5166_08 Datasheet - Page 117

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

Table 135. RTC Calibration Configuration Register (RTC_CAL, Address 0x0F)
Bit
7
6
[5:4]
3
2
1
0
RTC CALENDAR
The RTC has a full calendar, taking into account leap years. The rollover of the date to increment the month is implemented according to the
parameters shown in Table 136.
Table 136. Month Rollover
MONTH Register
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
0x0A
0x0B
0x0C
Mnemonic
CAL_EN_PSM2
CAL_EN
FSEL[1:0]
RTC_P2P3
RTC_P1P2
RTC_P0P7
RTC_P0P5
Default
0
0
0
0
0
0
0
Description
When this bit is set and the CAL_EN bit is set, the RTC output is present on P0.5/MISO/ZX in PSM2
mode. The RTC output is disabled on all other pins in PSM2.
RTC calibration enable output.
CAL_EN
0
1
RTC calibration output frequency selection.
FSEL[1:0]
00
01
10
11
When this bit is set and the CAL_EN bit is set, the RTC output is present on the P2.3/SDEN/TxD2 pin.
When this bit is set and the CAL_EN bit is set, the RTC output is present on the P1.2/FP25/ZX pin.
When this bit is set and the CAL_EN bit is set, the RTC output is present on the P0.7/SS/T1/RxD2 pin.
When this bit is set and the CAL_EN bit is set, the RTC output is present on the P0.5/MISO/ZX pin.
Rollover Value
31
28 or 29 days (see Table 137)
31
30
31
30
31
31
30
31
30
31
Result
The RTC calibration output signal is disabled
The RTC calibration output signal is enabled and present on the pins selected by
the RTC_CAL[3:0] bits
Frequency
1 Hz
512 Hz
500 Hz
16 kHz
Rev. 0 | Page 117 of 148
Calibration window
30.5 seconds
30.5 seconds
0.244 second
0.244 second
April
May
September
November
December
Estimated Month
January
February
March
June
July
August
October
ADE5166/ADE5169