71M6531D_10 Datasheet, PDF (1/120 Pages) Teridian Semiconductor Corporation – Energy Meter IC

Simplifying System Integration^TM
71M6531D/F, 71M6532D/F
Energy Meter IC
DATA SHEET
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
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, I²C,
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.
CT/SHUNT
A
NEUTRAL
CT
B
LOAD
LOAD
POWER SUPPLY
AMR
RX/DIO1
IR _TX/DIO2
POWER
FAULT
32 kHz
ADC
IAP*
IAN*
VA
IBP*
IBN*
VB
V3.3A
V3.3
SYS
GNDA GNDD
PWR MODE
TERIDIAN ^CONTROL
71M6531 ^WAKE-UP
71M6532 REGULATOR
VBAT
V2.5
VOLTAGE REF
VREF
VBIAS
TEMP
SENSOR
RAM
LCD & DIO
COM0..3
LCD SEG
SERIAL PORTS
TX
RX
SENSE
DRIVE/MOD
COMPARATOR
V1
OSC/PLL
XIN
XOUT
FLASH
MEMORY
COMPUTE
ENGINE
MPU
TIMERS
RTC
ICE I/F
SEG/DIO
SPI
ICE_E
* _{Differential pins only on 6532D/F}
02/18/2009
BATTERY
88. 88. 8888
I2C or µWire
EEPROM
TEST PULSES
SPI HOST
V3P3D
GNDD
June 2010
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 instruction,
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
v1.3
© 2005-2010 TERIDIAN Semiconductor Corporation
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