ADE7569ASTZF16-RL Analog Devices Inc, ADE7569ASTZF16-RL Datasheet - Page 26

• Manufacturer Part Number: ADE7569ASTZF16-RL
• Description: IC,Power Metering,QFP,64PIN,PLASTIC
• Manufacturer: Analog Devices Inc

Specifications of ADE7569ASTZF16-RL

• Applications: Energy Measurement
• Core Processor: 8052
• Program Memory Type: FLASH (16 kB)
• Controller Series: ADE75xx
• 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
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ADE7566/ADE7569
POWER SUPPLY ARCHITECTURE
Each ADE7566/ADE7569 have two power supply inputs, V
V
operation. A battery backup, or secondary power supply, with a
maximum of 3.6 V can be connected to the V
the ADE7566/ADE7569 connect V
to derive power for the ADE7566/ADE7569 circuitry. The V
output pin reflects the voltage at V
current of 6 mA. This pin can also be used to power a limited
number of peripheral components. The 2.5 V analog supply (V
and the 2.5 V supply for the core logic (V
on-chip linear regulators from V
supply architecture of ADE7566/ADE7569.
The ADE7566/ADE7569 provide automatic battery switchover
between V
or V
battery switchover. The conditions for switching V
to V
section. V
3.3 V dc signal. This input is intended for power supply super-
visory purposes and does not provide power to the ADE7566/
ADE7569 circuitry (see the Battery Switchover section).
BATTERY SWITCHOVER
The ADE7566/ADE7569 monitor V
battery switchover from V
the status of V
enabled by default. Setting Bit 1 in the Battery Switchover
Configuration SFR (BATPR, 0xF5) disables battery switchover
so that V
indicated by Bit 6 in the Peripheral Configuration SFR
(PERIPH, 0xF4), which is set when V
and cleared when V
BAT
BCTRL
, and require only a single 3.3 V power supply at V
BAT
DCIN
and back to V
. Additionally, the BCTRL input can be used to trigger a
V
DD
DCIN
DCIN
POWER SUPPLY
DD
MANAGEMENT
SCRATCHPAD
is always connected to V
and V
is an input pin that can be connected to a 0 V to
DD
V
DD
, V
Figure 22. Power Supply Architecture
TEMPERATURE ADC
V
DCIN
BAT
SW
BAT
DD
is connected to V
based on the voltage level detected at V
, or the BCTRL pin. Battery switchover is
are described in the Battery Switchover
V
ADC
SW
DD
ADC
LCD
V
to V
SWOUT
SW
BAT
DD
SW
DD
. Figure 22 shows the power
or V
and has a maximum output
SW
, V
can be configured based on
LDO
LDO
RTC
SW
. The source of V
BAT
BAT
is connected to V
BAT
INTD
, and V
.
V
V
to V
3.3V
INTD
INTA
BAT
) are derived by
input. Internally,
SW
DCIN
, which is used
SW
2.5V
SPI/I
UART
MCU
ADE
. Automatic
DD
from V
2
SW
C
for full
SWOUT
DD
DD
is
Rev. PrA | Page 26 of 136
INTA
and
DD
DD
)
The battery switchover functionality provided by the
ADE7566/ADE7569 allows a seamless transition from V
V
power supply to the ADE7566/ADE7569, as long as the external
battery voltage is above 2.75 V. It allows continuous code
execution even while the internal power supply is switching
from V
ADCs are not available when V
Power supply monitor (PSM) interrupts can be enabled to
indicate when battery switchover occurs and when the V
power supply is restored (see the Power Supply Monitor
Interrupt (PSM) section.)
Switching from V
The following three events switch the internal power supply
(V
•
•
•
Switching from V
To switch V
that are enabled to force battery switchover must be false:
•
•
•
BAT
SW
. An automatic battery switchover option ensures a stable
) from V
V
V
in the Battery Switchover Configuration SFR (BATPR,
0xF5) = 0b01. Setting these bits disables switchover based
on V
default.
V
from V
the Battery Switchover Configuration SFR (BATPR, 0xF5)
are cleared.
Rising edge on BCTRL. When the battery control pin,
BCTRL, goes high, V
external switchover signal can trigger a switchover to V
at any time. Setting bits INT1PRG[4:2] to 0bx01 in the
Interrupt Pins Configuration SFR (INTPR, 0xFF) enables
the battery control pin.
V
condition is enabled, V
remains above 1.2 V and V
V
has been above 2.75 V.
BCTRL enabled. V
low and the first or second bullet point is satisfied.
DCIN
DD
DD
DCIN
DD
DD
to V
< 2.75 V. When V
< 2.75 V enabled. V
DCIN
to V
< 1.2 V. When V
< 1.2 V and V
DD
SW
BAT
. Battery switchover on low V
DD
to V
BAT
back from V
. This event is enabled when the BATPRG[1:0] bits
to V
and back. Note that the energy metering
BAT
DD
BAT
Preliminary Technical Data
BAT
. This event is enabled when BATPRG[1:0] in
to V
to V
:
SW
DD
SW
DCIN
BAT
switches back to V
DD
DD
BAT
< 2.75 V enabled. If the low V
SW
switches from V
SW
falls below 2.75 V, V
falls below 1.2V, V
to V
switches to V
BAT
switches back to V
DD
remains above 2.75 V.
is being used for V
DD
, all of the following events
DCIN
DD
is disabled by
DD
DD
after V
SW
to V
after BCTRL is
SW
switches from
DD
BAT
switches
after V
SW
DCIN
. This
.
DD
DD
DCIN
to
DD
BAT