71M6521BE IC Datasheet

71M6521BE Datasheet, PDF, Equivalent


Part Number

71M6521BE

Description

Energy Meter IC

Manufacture

TERIDIAN Semiconductor

Total Page 30 Pages
Datasheet
Download 71M6521BE Datasheet


71M6521BE
GENERAL DESCRIPTION
The TERIDIAN 71M6521BE is a highly integrated SOC with an MPU core,
FLASH and LCD driver. TERIDIAN’s patented Single Converter Technol-
ogywith 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 32kHz crystal
time-base for the entire system further reduces system cost. The IC
supports 2-wire single-phase residential metering along with tamper-
detection mechanisms.
Maximum design flexibility is provided by multiple UARTs, I2C, μWire, up to
14 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 AMR and
Prepay meters that comply with worldwide electricity metering standards.
A
NEUT
B
CT/SHUNT
LOAD
LOAD
POWER SUPPLY
AMR
RX/DIO1
IR TX/DIO2
POWER
FAULT
32 kHz
CONVERTER
IA
VA
IB
VB
V3.3A
V3.3
SYS
TERIDIAN
71M6521BE
GNDA GNDD
PWR MODE
CONTROL
WAKE-UP
REGULATOR
VBAT
V2.5
VOLTAGE REF
VREF
VBIAS
SERIAL PORTS
TX
RX
SENSE
DRIVE/MOD
COMPARATOR
V1
OSC/PLL
XIN
XOUT
TEMP
SENSOR
RAM
FLASH
COMPUTE
ENGINE
MPU
TIMERS
ICE
DIO, PULSE
COM0..3
SEG0..18
SEG 24..31/
DIO 4..11
SEG 34..37/
DIO 14..17
SEG 32,33,
38
ICE_E
11/14/2007
BATTERY
3.3V LCD
888888.88
I2C or µWire
EEPROM
TEST PULSE
V3P3D
GNDD
www.DataSheet4U.com
71M6521BE
Energy Meter IC
DATA SHEET
JANUARY 2008
FEATURES
< 0.4% Wh accuracy over 2000:1 current range
and over temperature
Exceeds IEC62053 / ANSI C12.20 standards
Voltage reference < 40ppm/°C
Four sensor inputs—VDD referenced
Low jitter Wh test output (10kHz maximum)
Pulse count for Wh pulse output
Tamper detection: Neutral current with CT or
shunt
Line frequency count for time keeping
Digital temperature compensation
Sag detection for phase A and B
Independent 32-bit compute engine
46-64Hz line frequency range with same
calibration
Phase compensation (±7°)
Battery monitor
Three battery modes w/ wake-up on push-button
or timer:
Brownout mode (48µA)
LCD mode (5.7µA)
Sleep mode (2.9µA)
Energy display on main power failure
Wake-up with push-button
22-bit delta-sigma ADC
8-bit MPU (80515), 1 clock cycle per instruction
w/ integrated ICE for MPU debug
Hardware watchdog timer, power fail monitor
LCD driver (up to 140 pixels)
Up to 14 general purpose I/O pins
32kHz time base
8KB FLASH with security
2KB MPU XRAM
Two UARTs for IR and AMR
Digital I/O pins compatible with 5V inputs
64-pin LQFP
Lead Free package
V1.0
© 2005-2008 TERIDIAN Semiconductor Corporation
Page: 1 of 97

71M6521BE
Table of Contents
www.DataSheet4U.com
71M6521BE
Energy Meter IC
DATA SHEET
JANUARY 2008
GENERAL DESCRIPTION ............................................................................................................................................1
FEATURES...................................................................................................................................................... 1
HARDWARE DESCRIPTION.........................................................................................................................................9
Hardware Overview..........................................................................................................................................9
Analog Front End (AFE)...................................................................................................................................9
Input Multiplexer ................................................................................................................................9
A/D Converter (ADC) .......................................................................................................................10
FIR Filter..........................................................................................................................................10
Voltage References .........................................................................................................................10
Temperature Sensor........................................................................................................................11
Battery Monitor ................................................................................................................................12
Functional Description .....................................................................................................................12
Digital Computation Engine (CE) ...................................................................................................................12
Meter Equations ..............................................................................................................................13
Real-Time Monitor ...........................................................................................................................13
Pulse Generator ..............................................................................................................................13
CE Functional Overview ..................................................................................................................14
80515 MPU Core ...........................................................................................................................................16
Memory Organization ......................................................................................................................16
Special Function Registers (SFRs)..................................................................................................18
Special Function Registers (Generic 80515 SFRs) .........................................................................19
Special Function Registers Specific to the 71M6521BE ..................................................................21
Instruction Set..................................................................................................................................22
UART............................................................................................................................................... 22
Timers and Counters .......................................................................................................................25
WD Timer (Software Watchdog Timer)............................................................................................27
Interrupts .........................................................................................................................................29
On-Chip Resources .......................................................................................................................................37
Oscillator.......................................................................................................................................... 37
PLL and Internal Clocks...................................................................................................................37
Temperature Sensor........................................................................................................................37
Physical Memory .............................................................................................................................37
Optical Interface ..............................................................................................................................38
Digital I/O.........................................................................................................................................39
LCD Drivers .....................................................................................................................................41
Battery Monitor ................................................................................................................................41
EEPROM Interface ..........................................................................................................................41
Hardware Watchdog Timer..............................................................................................................45
Program Security.............................................................................................................................45
Page: 2 of 97
© 2005-2008 TERIDIAN Semiconductor Corporation
V1.0


Features www.DataSheet4U.com 71M6521BE Energy Me ter IC DATA SHEET JANUARY 2008 GENERAL DESCRIPTION The TERIDIAN 71M6521BE is a highly integrated SOC with an MPU cor e, FLASH and LCD driver. TERIDIAN’s p atented Single Converter Technology™ with a 22-bit delta-sigma ADC, four ana log inputs, digital temperature compens ation, precision voltage reference, bat tery voltage monitor, and 32bit computa tion engine (CE) supports a wide range of residential metering applications wi th very few low-cost external component s. A 32kHz crystal time-base for the en tire system further reduces system cost . The IC supports 2-wire single-phase r esidential metering along with tamperde tection mechanisms. Maximum design flex ibility is provided by multiple UARTs, I2C, μWire, up to 14 DIO pins and in-s ystem 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 certif.
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