71M6531F-IM/F Maxim Integrated Products, 71M6531F-IM/F Datasheet

IC ENERGY METER 256KB 68-QFN

71M6531F-IM/F

Manufacturer Part Number
71M6531F-IM/F
Description
IC ENERGY METER 256KB 68-QFN
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of 71M6531F-IM/F

Mounting Style
SMD/SMT
Package / Case
QFN-68
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
dual-phase residential metering along with tamper-detection
mechanisms. The 71M6531D/F offers single-ended inputs for
two current channels and two single-ended voltage inputs.
The 71M6532D/F has two differential current inputs and three
single-ended voltage inputs.
Maximum design flexibility is provided by multiple UARTs, I
Simplifying System Integration
GENERAL DESCRIPTION
The Teridian 71M6531D/F and 71M6532D/F are highly
integrated SOCs with an MPU core, RTC, FLASH and LCD
driver. Teridian’s patented Single Converter Technology®
with a 22-bit delta-sigma ADC, four analog inputs, digital
temperature compensation, precision voltage reference, battery
voltage monitor and 32-bit computation engine (CE) supports
a wide range of residential metering applications with very few
low-cost external components.
A 32-kHz crystal time base for the entire system and internal
battery backup support for RAM and RTC further reduce system
cost. The IC supports 2-wire, and 3-wire single-phase and
μWire, up to 21 DIO pins and in-system programmable FLASH
memory, which can be updated with data or application code
in operation.
A complete array of ICE and development tools, programming
libraries and reference designs enable rapid development and
certification of TOU, AMR and Prepay meters that comply with
worldwide electricity metering standards.
v1.3
A
B
NEUTRAL
32 kHz
CT
POWER
FAULT
AMR
CT/SHUNT
IR
RX/DIO1
TX/DIO2
*
VB
IAP*
IAN*
VA
IBP*
IBN*
SERIAL PORTS
VOLTAGE REF
COMPARATOR
XIN
XOUT
Differential pins only on 6532D/F
V1
TX
RX
DRIVE/MOD
VREF
VBIAS
OSC/PLL
LOAD
LOAD
SENSE
ADC
TM
TERIDIAN
© 2005-2010 TERIDIAN Semiconductor Corporation
71M6531
71M6532
COMPUTE
MEMORY
SENSOR
ENGINE
TIMERS
POWER SUPPLY
FLASH
ICE I/F
V3.3A
MPU
TEMP
RAM
RTC
V3.3
SYS
GNDA GNDD
REGULATOR
PWR MODE
CONTROL
LCD & DIO
WAKE-UP
LCD SEG
SEG/DIO
COM0..3
VBAT
V2.5
02/18/2009
ICE_E
SPI
BATTERY
88. 88. 8888
TEST PULSES
I2C or µWire
SPI HOST
EEPROM
2
V3P3D
GNDD
C,
FEATURES
• Wh accuracy < 0.1% over 2000:1 current
• Exceeds IEC62053/ANSI C12.20 standards
• Four sensor inputs
• Low-jitter Wh and VARh plus two additional
• Four-quadrant metering
• Tamper detection (Neutral current with CT,
• Line frequency count for RTC
• Digital temperature compensation
• Sag detection for phase A and B
• Independent 32-bit compute engine
• 46-64 Hz line frequency range with same
• Three battery modes with wake-up on timer
• Energy display during mains power failure
• 39 mW typical consumption @ 3.3 V, MPU
• 22-bit delta-sigma ADC with 3360 Hz or
• 8-bit MPU (80515),1 clock cycle per instruction,
• RTC for TOU functions with clock-rate adjust
• Hardware watchdog timer, power fail monitor
• LCD driver with 4 common segment drivers:
• Up to 22 (71M6531D/F) or 43 (71M6532D/F)
• 32 kHz time base
• High-speed slave SPI interface to data RAM
• Two UARTs for IR and AMR, IR driver with
• FLASH memory with security and in-system
• 4 KB MPU XRAM
• Industrial temperature range
• 68-pin QFN package for 71M6531D/F pin-
71M6531D/F, 71M6532D/F
range
Rogowski or shunt, magnetic tamper input)
pulse test outputs (4 total, 10 kHz maximum)
with pulse count
calibration. Phase compensation (± 7°)
or push-button:
clock frequency 614 kHz
2520 Hz sample rate
10 MHz maximum, with integrated ICE for
debug
register
general-purpose I/O pins. Digital I/O pins
compatible with 5 V inputs
modulation
program update:
compatible with 71M6521, 100-pin LQFP
package for 71M6532D/F, lead free
Up to 156 (71M6531D/F) or 268 pixels
Brownout mode (52 µA typ.)
LCD mode (21 µA typ., DAC active)
Sleep mode (0.7 µA typ.)
(71M6532D/F)
128 KB (71M6531D/32D)
256 KB (71M6531F/32F)
Energy Meter IC
DATA SHEET
June 2010
1

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