ADE7763ARSZRL Analog Devices Inc, ADE7763ARSZRL Datasheet - Page 44

• Manufacturer Part Number: ADE7763ARSZRL
• Description: IC ENERGY METERING 1PHASE 20SSOP
• Manufacturer: Analog Devices Inc

Specifications of ADE7763ARSZRL

• Input Impedance: 390 KOhm
• Measurement Error: 0.1%
• Voltage - I/o High: 2.4V
• Voltage - I/o Low: 0.8V
• Current - Supply: 3mA
• Voltage - Supply: 4.75 V ~ 5.25 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-SSOP (0.200", 5.30mm Width)
• Meter Type: Single Phase
• Ic Function: Single-Phase Active And Apparent Energy Metering IC
• Supply Voltage Range: 4.75V To 5.25V
• Operating Temperature Range: -40°C To +85°C
• Digital Ic Case Style: SSOP
• No. Of Pins: 20
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: EVAL-ADE7763ZEB - BOARD EVALUATION FOR ADE7763
• Lead Free Status / Rohs Status: Compliant
• Other names: ADE7763ARSZRL; ADE7763ARSZRLTR

ADE7763
SUSPENDING FUNCTIONALITY
The analog and the digital circuit can be suspended separately.
The analog portion can be suspended by setting the ASUSPEND
bit (Bit 4) of the mode register to logic high—see the Mode
Register (0x09) section. In suspend mode, all waveform samples
from the ADCs are set to 0s. The digital circuitry can be halted
by stopping the CLKIN input and maintaining a logic high or
low on the CLKIN pin. The ADE7763 can be reactivated by
restoring the CLKIN input and setting the ASUSPEND bit to
logic low.
CHECKSUM REGISTER
The ADE7763 has a checksum register (CHECKSUM[5:0]) to
ensure that the data bits received in the last serial read operation
are not corrupted. The 6-bit checksum register is reset before
the first bit (MSB of the register to be read) is put on the DOUT
pin. During a serial read operation, when each data bit becomes
available upon the rising edge of SCLK, the bit is added to the
checksum register. At the end of the serial read operation, the
content of the checksum register is equal to the sum of all ones
previously read in the register. Using the checksum register, the
user can determine if an error has occurred during the last read
operation. Note that a read to the checksum register also
generates a checksum of the checksum register itself.
SERIAL INTERFACE
All ADE7763 functionality is accessible via several on-chip
registers—see Figure 80. The contents of these registers can be
updated or read using the on-chip serial interface. After power-
on or toggling the RESET pin low and a falling edge on CS , the
ADE7763 is placed in communication mode. In communica-
tion mode, the ADE7763 expects a write to its communication
register. The data written to the communication register
determines whether the next data transfer operation is a read or
a write and which register is accessed. Therefore, all data
transfer operations with the ADE7763, whether a read or a
write, must begin with a write to the communication register.
DOUT
Figure 79. Checksum Register for Serial Interface Read
+
+
CONTENT OF REGISTER (n-bytes)
CHECKSUM REGISTER ADDR: 0x3E
Rev. B | Page 44 of 56
The communication register is an 8-bit-wide register. The MSB
determines whether the next data transfer operation is a read or
a write. The 6 LSBs contain the address of the register to be
accessed—see the Communication Register section for a more
detailed description.
Figure 81 and Figure 82 show the data transfer sequences for a
read and write operation, respectively. Upon completion of a
data transfer (read or write), the ADE7763 again enters the
communication mode. A data transfer is complete when the
LSB of the ADE7763 register being addressed (for a write or a
read) is transferred to or from the ADE7763.
DOUT
SCLK
SCLK
Figure 80. Addressing ADE7763 Registers via the Communication Register
DIN
DIN
CS
CS
Figure 81. Reading Data from the ADE7763 via the Serial Interface
COMMUNICATION REGISTER WRITE
COMMUNICATION REGISTER WRITE
DOUT
Figure 82. Writing Data to the ADE7763 via the Serial Interface
DIN
1
0
0
0
ADDRESS
ADDRESS
REGISTER 1
REGISTER 2
REGISTER 3
REGISTER n–1
REGISTER n
COMMUNICATION
REGISTER
MULTIBYTE
MULTIBYTE READ DATA
OUT
OUT
OUT
OUT
OUT
IN
IN
IN
IN
IN
READ DATA
REGISTER
ADDRESS
DECODE