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71M6531D Datasheet(PDF) 1 Page - Teridian Semiconductor Corporation

Part No. 71M6531D
Description  Energy Meter IC
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Maker  TERIDIAN [Teridian Semiconductor Corporation]
Homepage  http://www.teridian.com
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71M6531D Datasheet(HTML) 1 Page - Teridian Semiconductor Corporation

 
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71M6531D/F, 71M6532D/F
Energy Meter IC
Simplifying System Integration
TM
DATA SHEET
October 2009
v1.2
© 2005-2009 TERIDIAN Semiconductor Corporation
1
GENERAL DESCRIPTION
The Teridian 71M6531D/F and 71M6532D/F are highly inte-
grated 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 com-
pensation, 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 bat-
tery backup support for RAM and RTC further reduce system
cost. The IC supports 2-wire, and 3-wire single-phase and
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 sin-
gle-ended voltage inputs.
Maximum design flexibility is provided by multiple UARTs, I
2C,
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.
FEATURES
• Wh accuracy < 0.1% over 2000:1 current
range
• Exceeds IEC62053/ANSI C12.20 standards
• Four sensor inputs
• Low-jitter Wh and VARh plus two additional
pulse test outputs (4 total, 10 kHz maximum)
with pulse count
• Four-quadrant metering
• Tamper detection (Neutral current with CT,
Rogowski or shunt, magnetic tamper input)
• 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
calibration. Phase compensation (
± 7°)
• Three battery modes with wake-up on timer
or push-button:
Brownout mode (52 µA typ.)
LCD mode (21 µA typ., DAC active)
Sleep mode (0.7 µA typ.)
• Energy display during mains power failure
• 39 mW typical consumption @ 3.3 V, MPU
clock frequency 614 kHz
• 22-bit delta-sigma ADC with 3360 Hz or
2520 Hz sample rate
• 8-bit MPU (80515), 1 clock cycle per in-
struction, 10 MHz maximum, with integrated
ICE for debug
• RTC for TOU functions with clock-rate adjust
register
• Hardware watchdog timer, power fail monitor
• LCD driver with 4 common segment drivers:
Up to 156 (71M6531D/F) or 268 pixels
(71M6532D/F)
• Up to 22 (71M6531D/F) or 43
(71M6532D/F) general-purpose I/O pins.
Digital I/O pins compatible with 5 V inputs
• 32 kHz time base
• High-speed slave SPI interface to data RAM
• Two UARTs for IR and AMR, IR driver with
modulation
• FLASH memory with security and in-system
program update:
128 KB (71M6531D/32D)
256 KB (71M6531F/32F)
• 4 KB MPU XRAM
• Industrial temperature range
• 68-pin QFN package for 71M6531D/F pin-
compatible with 71M6521, 100-pin LQFP
package for 71M6532D/F, lead free
MPU
TIMERS
IAP*
VA
IBP*
XIN
XOUT
VREF
RX/DIO1
TX/DIO2
V1
TX
RX
COM0..3
V3.3A
V3.3
SYS
VBAT
V2.5
VBIAS
GNDA GNDD
SEG/DIO
ICE I/F
LOAD
88. 88. 8888
I2C or µWire
EEPROM
POWER
FAULT
AMR
TEST PULSES
COMPARATOR
SENSE
DRIVE/MOD
SERIAL PORTS
OSC/PLL
ADC
LCD & DIO
COMPUTE
ENGINE
FLASH
MEMORY
RAM
VOLTAGE REF
REGULATOR
POWER SUPPLY
TERIDIAN
71M6531
71M6532
TEMP
SENSOR
32 kHz
A
NEUTRAL
CT/SHUNT
02/18/2009
VB
B
LOAD
IR
PWR MODE
CONTROL
WAKE-UP
BATTERY
ICE_E
GNDD
V3P3D
IAN*
IBN*
CT
SPI HOST
SPI
LCD SEG
RTC
*
Differential pins only on 6532D/F


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