ADE7166ASTZF16 Analog Devices Inc, ADE7166ASTZF16 Datasheet - Page 39

• Manufacturer Part Number: ADE7166ASTZF16
• Description: IC ENERGY METER 1PHASE 64LQFP
• Manufacturer: Analog Devices Inc

Specifications of ADE7166ASTZF16

• Applications: Energy Measurement
• Core Processor: 8052
• Program Memory Type: FLASH (16 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
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

TRANSITIONING BETWEEN OPERATING MODES
The operating mode of the ADE7116/ADE7156/ADE7166/
ADE7169/ADE7566/ADE7569 is determined by the power
supply connected to V
supply, such as when V
V
describes events that change the operating mode.
Automatic Battery Switchover (PSM0 to PSM1)
If any of the enabled battery switchover events occurs (see the
Battery Switchover section), V
switchover results in a transition from 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 VSWOUT is connected to
V
in the power control SFR (POWCON, Address 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 ADE7116/ADE7156/ADE7166/ADE7169/ADE7566/
ADE7569 may need to wake up from PSM2 mode to service
wake-up events (see the 3.3 V Peripherals and Wake-Up Events).
PSM1 code execution begins at the power-on reset vector. After
servicing the wake-up event, the ADE7116/ADE7156/ADE7166/
ADE7169/ADE7566/ADE7569 can return to PSM2 mode by
setting Bit 4 in the power control SFR (POWCON, Address
0xC5) to shut down the MCU core.
SWOUT
BAT
, user code can initiate sleep mode, PSM2, by setting Bit 4
switches to V
DD
SWOUT
, alter the operating mode. This section
SWOUT
V
. Therefore, changes in the power
SWOUT
switches from V
SWOUT
NORMAL MODE
CONNECTED TO V
switches to V
PSM0
POWER SUPPLY
DD
RESTORED
ADE7116/ADE7156/ADE7166/ADE7169/ADE7566/ADE7569
BAT
DD
Figure 38. Transitioning Between Operating Modes
to V
V
. This
SWOUT
BAT
AUTOMATIC BATTERY
SWITCHOVER
or when
POWER SUPPLY
SLEEP MODE
CONNECTED TO V
RESTORED
PSM2
Rev. B | Page 39 of 152
BAT
WAKE-UP
EVENT
V
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 perf-
ormed 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, Address
0xF4) indicates the power supply to which V
(see Table 20). This bit can 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 SFR 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
following guidelines:
•
•
An early warning that battery switchover is about to occur is
provided by SAG detection and, possibly, by 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.
SWOUT
Enable the battery switchover interrupt (EBSO)
if V
Enable the power supply restored interrupt (EPSR)
if V
BATTERY MODE
CONNECTED TO V
PSM1
SWOUT
SWOUT
SWOUT
= V
= V
TO SHUT DOWN CORE AFTER
SERVICING WAKE-UP EVENT
USER CODE DIRECTS MCU
must be known at all times. The VSWSOURCE
DD
BAT
BAT
at power-up.
at power-up.
DD
(PSM2 to PSM0)
DD
SWOUT
only. Next, enable the low V
SWOUT
from V
DCIN
is connected to, use the
. Battery switchover
BAT
SWOUT
to V
DD
is connected
DCIN
DCIN
occur (see
detection
event
DCIN