ADE7166 datasheet(17/144 Pages) AD

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ADE7566/ADE7569/ADE7166/ADE7169

Rev. A | Page 17 of 144

Pin No.

Mnemonic

Description

P0.2/CF1/RTCCAL

General-Purpose Digital I/O Port 0.2, Calibration Frequency Logic Output 1, or RTC Calibration Frequency

Logic Output. The CF1 logic output gives instantaneous active, reactive, Irms, or apparent power information.

The RTCCAL logic output gives access to the calibrated RTC output.

SDEN/P2.3

Serial Download Mode Enable or Digital Output Pin P2.3. This pin is used to enable serial download mode

through a resistor when pulled low on power-up or reset. On reset, this pin momentarily becomes an input

and the status of the pin is sampled. If there is no pull-down resistor in place, the pin momentarily goes high

and then user code is executed. If the pin is pulled down on reset, the embedded serial download/debug

kernel executes, and this pin remains low during the internal program execution. After reset, this pin can be

used as a digital output port pin (P2.3).

BCTRL/INT1/P0.0

Digital Input for Battery Control, External Interrupt Input 1, or General-Purpose Digital I/O Port 0.0. This logic

input connects VDD or VBAT to VSWOUT internally when set to logic high or logic low, respectively. When left

open, the connection between VDD or VBAT and VSWOUT is selected internally.

XTAL2

A crystal can be connected across this pin and XTAL1 (see XTAL1 pin description) to provide a clock source

for the ADE7566/ADE7569/ADE7166/ADE7169. The XTAL2 pin can drive one CMOS load when an external

clock is supplied at XTAL1 or by the gate oscillator circuit. An internal 6 pF capacitor is connected to this pin.

XTAL1

An external clock can be provided at this logic input. Alternatively, a parallel resonant AT crystal can be

connected across XTAL1 and XTAL2 to provide a clock source for the ADE7566/ADE7569/ADE7166/ADE7169.

The clock frequency for specified operation is 32.768 kHz. An internal 6 pF capacitor is connected to this pin.

INT0

External Interrupt Input 0.

49, 50

VP, VN

Analog Inputs for Voltage Channel. These inputs are fully differential voltage inputs with a maximum

differential level of ±400 mV for specified operation. This channel also has an internal PGA.

This pin is used as an input for emulation. When held high, this input enables the device to fetch code from

internal program memory locations. The ADE7566/ADE7569/ADE7166/ADE7169 do not support external

code memory. This pin should not be left floating.

52, 53

IP or IPA, IN

Analog Inputs for Current Channel. These inputs are fully differential voltage inputs with a maximum

differential level of ±400 mV for specified operation. This channel also has an internal PGA.

AGND

This pin provides the ground reference for the analog circuitry.

FP26 or IPB

LCD Segment Output 26 (FP26) for ADE7566 and ADE7569 or Analog Inputs for Second Current Channel (IPB)

for ADE7166 and ADE7169. This input is fully differential with a maximum differential level of ±400 mV

referred to IN for specified operation. This channel also has an internal PGA.

RESET

Reset Input, Active Low.

REFIN/OUT

This pin provides access to the on-chip voltage reference. The on-chip reference has a nominal value of

1.2 V ± 0.1% and a typical temperature coefficient of 50 ppm/°C maximum. This pin should be decoupled

with a 1 μF capacitor in parallel with a ceramic 100 nF capacitor.

VBAT

Power Supply Input from the Battery with a 2.4 V to 2.7 V Range. This pin is connected internally to VDD when

the battery is selected as the power supply for the ADE7566/ADE7569/ADE7166/ADE7169.

VINTA

This pin provides access to the on-chip 2.5 V analog LDO. No external active circuitry should be connected to

this pin. This pin should be decoupled with a 10 μF capacitor in parallel with a ceramic 100 nF capacitor.

VDD

3.3 V Power Supply Input from the Regulator. This pin is connected internally to VDD when the regulator is

selected as the power supply for the ADE7566/ADE7569/ADE7166/ADE7169. This pin should be decoupled

with a 10 μF capacitor in parallel with a ceramic 100 nF capacitor.

VSWOUT

3.3 V Power Supply Output. This pin provides the supply voltage for the LDOs and internal circuitry of the

ADE7566/ADE7569/ADE7166/ADE7169. This pin should be decoupled with a 10 μF capacitor in parallel with

a ceramic 100 nF capacitor.

VINTD

This pin provides access to the on-chip 2.5 V digital LDO. No external active circuitry should be connected to

this pin. This pin should be decoupled with a 10 μF capacitor in parallel with a ceramic 100 nF capacitor.

DGND

This pin provides the ground reference for the digital circuitry.

VDCIN

Analog Input for DC Voltage Monitoring. The maximum input voltage on this pin is VSWOUT with respect to

AGND. This pin is used to monitor the preregulated dc voltage.

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