ADE5569ASTZF62 Analog Devices Inc, ADE5569ASTZF62 Datasheet - Page 37

• Manufacturer Part Number: ADE5569ASTZF62
• Description: IC METER/8052/RTC/LCD DRV 64LQFP
• Manufacturer: Analog Devices Inc

Specifications of ADE5569ASTZF62

• Applications: Energy Measurement
• Core Processor: 8052
• Program Memory Type: FLASH (62kB)
• Controller Series: ADE55xx
• Ram Size: 2.25K 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 ADE5166/ADE5169/ADE5566/
ADE5569 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 occurs (see the
Battery Switchover section), V
over 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, user code can initiate a transition to PSM2 mode.
Entering Sleep Mode (PSM1 to PSM2)
To reduce power consumption when V
user code can initiate sleep mode, PSM2, by setting Bit 4 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 ADE5166/ADE5169/ADE5566/ADE5569 may need to
wake up from PSM2 mode 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 ADE5166/ADE5169/ADE5566/ADE5569
can return to PSM2 mode by setting Bit 4 in the power control SFR
(POWCON, Address 0xC5) to shut down the MCU core.
Automatic Switch to V
If the conditions to switch V
Battery Switchover section), the operating mode switches to PSM0
mode. When this switch occurs, the MCU core and the analog
circuitry used in the ADE energy measurement DSP automatically
restart. PSM0 code execution begins at the power-on reset vector.
SWOUT
SWOUT
DD
, alter the operating mode. This section describes events
. Therefore, changes in the power supply, such as when
switches from V
DD
DD
to V
SWOUT
V
(PSM2 to PSM0)
SWOUT
SWOUT
BAT
from V
NORMAL MODE
IS CONNECTED TO V
or when V
switches to V
PSM0
SWOUT
BAT
to V
is connected to V
SWOUT
POWER SUPPLY
DD
RESTORED
BAT
Figure 38. Transitioning Between Operating Modes
occur (see the
DD
V
switches to
. This switch-
SWOUT
AUTOMATIC BATTERY
IS CONNECTED TO V
SWITCHOVER
POWER SUPPLY
SLEEP MODE
RESTORED
BAT
PSM2
Rev. C | Page 37 of 156
,
WAKE-UP
BAT
V
EVENT
Automatic Switch to V
If the conditions to switch V
the Battery Switchover section), the operating mode switches
to PSM0 mode. 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
in the peripheral configuration SFR (PERIPH, Address 0xF4)
indicates the power supply to which V
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 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
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
generate the PSM interrupt. When a low V
data backup. Upon completion of the data backup, enable battery
switchover on low V
SWOUT
ADE5166/ADE5169/ADE5566/ADE5569
Enable the battery switchover interrupt (EBSO)
if V
Enable the power supply restored interrupt (EPSR)
if V
BATTERY MODE
IS CONNECTED TO V
SWOUT
SWOUT
PSM1
SWOUT
SERVICING A WAKE-UP EVENT
TO SHUT DOWN CORE AFTER
= V
= V
USER CODE DIRECTS MCU
must be known at all times. The VSWSOURCE bit
DD
BAT
DCIN
DD
at power-up.
at power-up.
BAT
. Battery switchover occurs 30 ms later.
only. Next, enable the low V
DD
SWOUT
(PSM1 to PSM0)
SWOUT
is connected to, use the
from V
SWOUT
DCIN
BAT
is connected (see
to V
event occurs, start
DD
DCIN
DCIN
occur (see
detection
event to