ADE7166_15 datasheet(123/152 Pages) AD

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ADE7116/ADE7156/ADE7166/ADE7169/ADE7566/ADE7569

Rev. B | Page 123 of 1

Table 133. RTC Alarm Interval SFR (INTVAL, Address 0xA6)

Bit

Mnemonic

Default

Description

[7:0]

INTVAL

The interval timer counts according to the time base established in the ITS bits of the RTC configuration SFR

(TIMECON, 0xA1). When the number of counts is equal to INTVAL, the ALARM flag is set and a pending

RTC interrupt is created. Note that the interval counter is eight bits. Therefore, it can count up to 255 seconds,

for example.

Table 134. RTC Nominal Compensation SFR (RTCCOMP, Address 0xF6)

Bit

Mnemonic

Default

Description

[7:0]

RTCCOMP

Holds the nominal RTC compensation value at 25°C. This register is retained during a watchdog reset

or an external reset. It is reset after a POR.

Table 135. RTC Temperature Compensation SFR (TEMPCAL, Address 0xF7)

Bit

Mnemonic

Default

Description

[7:0]

TEMPCAL

The TEMPCAL SFR is adjusted based on the temperature read in the TEMPADC SFR to calibrate the RTC

over temperature. This allows the external crystal shift to be compensated over temperature. This

Table 136. Interrupt Pins Configuration SFR (INTPR, Address 0xFF)

Bit

Mnemonic

Default

Description

RTCCAL

Controls the RTC calibration output. When set, the RTC calibration frequency selected by the FSEL bits

is output on the P0.2/CF1/RTCCAL pin.

[6:5]

FSEL

Sets RTC calibration output frequency and calibration window.

FSEL

Result (Calibration Window, Frequency)

30.5 sec, 1 Hz

30.5 sec, 512 Hz

0.244 sec, 500 Hz

0.244 sec, 16 kHz

Reserved

[3:1]

INT1PRG

000

Controls the function of the INT1 pin.

INT1PRG

Result

GPIO

BCTRL

INT1 input disabled

INT1 input enabled

INT0PRG

Controls the function of the INT0 pin.

INT0PRG

Result

INT0 input disabled

INT0 input enabled

Table 137. Key SFR (KYREG, Address 0xC1)

Bit

Mnemonic

Default

Description

[7:0]

KYREG

Write 0xA7 to this SFR before writing to the POWCON SFR, which unlocks KYREG.

Write 0xEA to this SFR before writing to the INTPR, HTHSEC, SEC, MIN, or HOUR timekeeping registers

to unlock KYREG.

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