ADE7166ASTZF8 Analog Devices Inc, ADE7166ASTZF8 Datasheet - Page 35

• Manufacturer Part Number: ADE7166ASTZF8
• Description: IC ENERGY METER 1PHASE 64LQFP
• Manufacturer: Analog Devices Inc

Specifications of ADE7166ASTZF8

• Applications: Energy Measurement
• Core Processor: 8052
• Program Memory Type: FLASH (8 kB)
• Controller Series: ADE71xx
• Ram Size: 512 x 8
• Interface: I²C, SPI, UART
• Number Of I /o: 20
• Voltage - Supply: 3.135 V ~ 3.465 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 64-LQFP
• Ic Function: Single Phase Energy Measurement IC
• Supply Voltage Range: 3.13V To 3.46V, 2.4V To 3.7V
• Operating Temperature Range: -40°C To +85°C
• Digital Ic Case Style: LQFP
• No. Of Pins: 64
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TRANSITIONING BETWEEN OPERATING MODES
The operating mode of the ADE7566/ADE7569/ADE7166/
ADE7169 is determined by the power supply connected to
V
V
V
that change the operating mode.
Automatic Battery Switchover (PSM0 to PSM1)
If any of the enabled battery switchover events occur (see the
Battery Switchover section), V
switchover results in a transition from the PSM0 to PSM1
operating mode. When battery switchover occurs, the analog
circuitry used in the ADE energy measurement DSP is disabled.
To reduce power consumption, the user code can initiate a
transition to PSM2.
Entering Sleep Mode (PSM1 to PSM2)
To reduce power consumption when V
V
in the Power Control SFR (POWCON, 0xC5) to shut down the
MCU core. Events capable of waking the MCU can be enabled
(see the 3.3 V Peripherals and Wake-Up Events section).
Servicing Wake-Up Events (PSM2 to PSM1)
The ADE7566/ADE7569/ADE7166/ADE7169 may need to
wake up from PSM2 to service wake-up events (see the 3.3 V
Peripherals and Wake-Up Events section). PSM1 code
execution begins at the power-on reset vector. After servicing
the wake-up event, the ADE7566/ADE7569/ADE7166/
ADE7169 can return to PSM2 by setting Bit 4 in the Power
Control SFR (POWCON, 0xC5) to shut down the MCU core.
Automatic Switch to V
If the conditions to switch V
the Battery Switchover section), the operating mode switches to
PSM0. When this switch occurs, the MCU core and the analog
circuitry used in the ADE energy measurement DSP
SWOUT
SWOUT
DD
BAT
, alter the operating mode. This section describes events
, user code can initiate sleep mode, PSM2, by setting Bit 4
. Therefore, changes in the power supply, such as when
switches from V
DD
DD
to V
(PSM2 to PSM0)
SWOUT
SWOUT
BAT
or when V
from V
switches to V
SWOUT
BAT
SWOUT
to V
is connected to
BAT
DD
switches to
. This
occur (see
Rev. A | Page 35 of 144
automatically restart. PSM0 code execution begins at the power-
on reset vector.
Automatic Switch to V
If the conditions to switch V
the Battery Switchover section), the operating mode switches to
PSM0. When this switch occurs, the analog circuitry used in the
ADE energy measurement DSP automatically restarts. Note that
code execution continues normally. A software reset can be
performed to start PSM0 code execution at the power-on reset
vector.
USING THE POWER MANAGEMENT FEATURES
Because program flow is different for each operating mode, the
status of V
bit in the Peripheral Configuration SFR (PERIPH, 0xF4)
indicates what V
be used to control program flow on wake-up. Because code
execution always starts at the power-on reset vector, Bit 6 of the
PERIPH SRF can be tested to determine which power supply is
being used and to branch to normal code execution or to wake
up event code execution. Power supply events can also occur
when the MCU core is active. To be aware of the events that
change what V
•
•
An early warning that battery switchover is about to occur is
provided by SAG detection and possibly low V
(see the Battery Switchover section).
For a user-controlled battery switchover, enable automatic
battery switchover on low V
event to generate the PSM interrupt. When a low V
occurs, start data backup. Upon completion of the data backup,
enable battery switchover on low V
occurs 30 ms later.
ADE7566/ADE7569/ADE7166/ADE7169
Enable the battery switchover interrupt (EBSO)
if V
Enable the power supply restored interrupt (EPSR)
if V
SWOUT
SWOUT
SWOUT
SWOUT
= V
= V
must be known at all times. The VSWSOURCE
SWOUT
DD
BAT
is connected to, use the following guidelines:
at power-up.
at power-up.
is connected to (see Table 19). This bit can
DD
(PSM1 to PSM0)
DD
SWOUT
only. Then, enable the low V
from V
DCIN
. Battery switchover
BAT
to V
DCIN
DD
detection
DCIN
occur (see
event
DCIN