71M6515H IC Datasheet

71M6515H Datasheet, PDF, Equivalent


Part Number

71M6515H

Description

Energy Meter IC

Manufacture

TERIDIAN Semiconductor

Total Page 30 Pages
Datasheet
Download 71M6515H Datasheet


71M6515H
GENERAL DESCRIPTION
The 71M6515H is a high-accuracy analog front end
(AFE) IC that provides measurements for four-
quadrant 3-phase metering. The combination of a
21-bit sigma-delta A/D converter with a six-input
analog front end, a thermally compensated high pre-
cision reference and a compute engine results in
high accuracy and wide dynamic range. Patented
Single-Converter Technologyreduces cross talk
and cost. This IC also provides RTC and battery
backup for time-of-use (TOU) metering.
Battery
RTC
COMPUTE
ENGINE
VOLTAGE
REFERENCE
RAM
CONTROL
TERIDIAN 71M6515H
UART, IRQZ
SSI
HOST
PRO-
CESSOR
DIO
Figure 1: Meter block diagram
As shown in the block diagram (Figure 1), the host
processor communicates with the 71M6515H
through a UART interface using the programmable
IRQZ interrupt. The 71M6515H calculates and accu-
mulates meter measurements for each accumulation
interval. A high-speed synchronous serial port (SSI)
is provided to facilitate high-end metering. Integrated
rectifying functions on the battery backup circuit
enable minimal external component usage and
minimum back-up current. Also, eight multi-purpose
pins are provided for control of peripherals.
www.DataSheet4U.com
71M6515H
Energy Meter IC
DATA SHEET
MARCH 2008
FEATURES
High Accuracy
< 0.1% Wh accuracy over temperature and
2000:1 range
Exceeds IEC62053/ANSIC12.20 specifications.
Precision ultra-stable voltage reference
(10PPM/°C)
Single Converter Technologyreduces cross
talk and power consumption
Six sensor inputs—referenced to V3P3
Compatible with CTs, resistive shunts and
Rogowski Coil sensors
-90dB THD max.
Digital temperature compensation
Sag detection
Measures Wh, VARh, VAh, Vrms, Irms, V-to-V
phase and load angle on each phase
Four-quadrant metering.
Four low-jitter pulse outputs from selectable
measurements
Four pulse count registers
Selectable default status for pulse pins
Same calibration data for 46Hz to 64Hz line
frequency
Broad CT phase compensation (±7deg)
Battery Backup
Protects accumulated data and powers real time
clock during power supply outage
Compatible with Li-ion, NiCd, or super-capacitor
Battery backup current 2µA typical at 25°C
External Data Interface
UART Control Interface, two selectable data
rates
8 general-purpose I/O pins with alarm capability
5 or 10MHz selectable high speed synchronous
serial output for DSP interface
IRQ output signal for alarms and end of measure-
ment intervals.
Alarms on voltage sag, over-voltage, over-current
Low System Cost
Power Consumption 30mW @ 3.3V typical
Real-time clock with temperature compensation
Built-in power fault detection
Single 32kHz crystal time base
Single-supply operation (3.3V)
64-lead LQFP package
Page: 1 of 57
© 2005-2008 TERIDIAN Semiconductor Corporation
V1.4

71M6515H
www.DataSheet4U.com
71M6515H
Energy Meter IC
DATA SHEET
MARCH 2008
IA
VA
IB
VB
MUX
IC
VC
VX
TEMP
MUXSYNC
PULSE4
PULSE3
PULSE_INIT
BAUDRATE
TX
RX
D0
D1
D2
D3
MISC
UART
VREF
VREF
ΔΣ ADC
CONVERTER
V3P3A
-
+
VREF
21
VBIAS
(1.5V)
CALCULATIONS
OUTPUT VALUES:
Whr (A, B, C)
VARhr (A, B, C)
VAhr (A, B, C)
Vrms (A, B, C)
Irms (A, B, C)
Iphase (A, B, C)
Frequency (Selected Phase)
Temperature
ALARMS:
Voltage Sag (A, B, C)
Zero Cross (Selected Phase)
Over-Voltage (All)
Over-Current (All)
D0-D7 State Change
CONTROL
I/O CONTROL
Change of State
(D0...D7)
PULSEW PULSER V3P3A GNDA GNDA
VOLT
REG
2.5V to logic
SSI INTERFACE
GNDD
V3P3D
GNDD
GNDD
V2P5
SSCLK
SSDATA
SFR
SRDY
SYSTEM CLOCKS
CK_GEN
BATTERY BACKUP
OSC
(32KHz)
RTC
DATA
RAM
CKTEST
XIN
XOUT
VBAT
IRQZ
D4
D5
D6
D7
VFLT
VX
FAULT DETECT
VBIAS
(1.5V) V3P3
TEST
64 PINS -- 64 TQFP
RESETZ
Figure 2: IC Functional Block Diagram
March 3, 2008
GNDD
TMUXOUT
RESERVED
Page: 2 of 57
© 2005-2008 TERIDIAN Semiconductor Corporation
V1.4


Features 71M6515H Energy Meter IC DATA SHEET MARC H 2008 GENERAL DESCRIPTION FEATURES ww w.DataSheet4U.com The 71M6515H is a hi gh-accuracy analog front end (AFE) IC t hat provides measurements for fourquadr ant 3-phase metering. The combination o f a 21-bit sigma-delta A/D converter wi th a six-input analog front end, a ther mally compensated high precision refere nce and a compute engine results in hig h accuracy and wide dynamic range. Pate nted Single-Converter Technology™ red uces cross talk and cost. This IC also provides RTC and battery backup for tim e-of-use (TOU) metering. Battery RTC COMPUTE ENGINE VOLTAGE REFERENCE RAM U ART, IRQZ HOST PROCESSOR SSI CONTROL DIO High Accuracy • < 0.1% Wh accura cy over temperature and 2000:1 range Exceeds IEC62053/ANSIC12.20 specifica tions. • Precision ultra-stable volta ge reference (10PPM/°C) • Single Con verter Technology™ reduces cross talk and power consumption • Six sensor i nputs—referenced to V3P3 • Compatible with CTs, resistive shunts and Rogowski .
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