71M6521FE IC Datasheet

71M6521FE Datasheet, PDF, Equivalent


Part Number

71M6521FE

Description

Energy Meter IC

Manufacture

TERIDIAN Semiconductor

Total Page 30 Pages
Datasheet
Download 71M6521FE Datasheet


71M6521FE
www.DataSheet4U.com
71M6521DE/71M6521FE
Energy Meter IC
DATA SHEET
JANUARY 2008
GENERAL DESCRIPTION
The TERIDIAN 71M6521DE/FE is a highly integrated SOC with an MPU
core, RTC, FLASH and LCD driver. TERIDIAN’s patented Single Converter
Technologywith 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 re-
sidential metering applications with very few low-cost external components.
A 32kHz 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, 3-wire and 4-wire single-phase and dual-phase residential metering
along with tamper-detection mechanisms.
Maximum design flexibility is provided by multiple UARTs, I2C, μWire, up to
18 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 stan-
dards.
A
NEUT
B
CT/SHUNT
LOAD
LOAD
POWER SUPPLY
AMR
RX/DIO1
IR TX/DIO2
POWER
FAULT
32 kHz
CONVERTER
IA
VA
IB
VB
VOLTAGE REF
VREF
VBIAS
SERIAL PORTS
TX
RX
SENSE
DRIVE/MOD
COMPARATOR
V1
OSC/PLL
XIN
XOUT
V3.3A
V3.3
SYS
TERIDIAN
71M6521
GNDA GNDD
PWR MODE
CONTROL
WAKE-UP
REGULATOR
VBAT
V2.5
TEMP
SENSOR
DIO, PULSE
RAM
FLASH
COMPUTE
ENGINE
MPU
RTC
TIMERS
COM0..3
SEG0..18
SEG 24..31/
DIO 4..11
SEG 34..37/
DIO 14..17
SEG 32,33,
38/ICE
ICE_E
ICE
07/25/2007
BATTERY
3.3V LCD
88.88.8888
IIC or uWire
EEPROM
TEST PULSES
V3P3D
GNDD
FEATURES
< 0.4% Wh accuracy over 2000:1 current range
and over temperature
Exceeds IEC62053 / ANSIC12.20 standards
Voltage reference < 40ppm/°C
Four sensor inputs—VDD referenced
Low jitter Wh and VARh pulse test outputs
(10kHz maximum)
Pulse count for pulse outputs
Four-quadrant metering
Tamper detection
Neutral current with CT or shunt
Line frequency count for RTC
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 backup for RTC and 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
RTC with temperature compensation
Auto-Calibration
Hardware watchdog timer, power fail monitor
LCD driver (up to 152 pixels)
Up to 18 general purpose I/O pins
32kHz time base
16KB (6521DE) or 32KB (6521FE) FLASH with
security
2KB MPU XRAM
Two UARTs for IR and AMR
Digital I/O pins compatible with 5V inputs
64-pin LQFP or 68-pin QFN package
Lead-Free packages
v1.0
© 2005-2008 TERIDIAN Semiconductor Corporation
Page: 1 of 101

71M6521FE
Table of Contents
www.DataSheet4U.com
71M6521DE/71M6521FE
Energy Meter IC
DATASHEET
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 ...........................................................................................................................14
Pulse Generator ..............................................................................................................................14
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 71M6521DE/FE ............................................................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
Real-Time Clock (RTC) ...................................................................................................................37
Temperature Sensor........................................................................................................................37
Physical Memory .............................................................................................................................38
Optical Interface ..............................................................................................................................39
Digital I/O.........................................................................................................................................39
LCD Drivers .....................................................................................................................................41
Battery Monitor ................................................................................................................................42
EEPROM Interface ..........................................................................................................................42
Hardware Watchdog Timer..............................................................................................................45
Page: 2 of 101
© 2005-2008 TERIDIAN Semiconductor Corporation
v1.0


Features www.DataSheet4U.com 71M6521DE/71M6521FE Energy Meter IC DATA SHEET JANUARY 200 8 GENERAL DESCRIPTION The TERIDIAN 71M 6521DE/FE is a highly integrated SOC wi th an MPU core, RTC, FLASH and LCD driv er. TERIDIAN’s patented Single Conver ter Technology™ with a 22-bit delta-s igma ADC, four analog inputs, digital t emperature compensation, precision volt age reference, battery voltage monitor, and 32-bit computation engine (CE) sup ports a wide range of residential meter ing applications with very few low-cost external components. A 32kHz crystal t ime base for the entire system and inte rnal battery backup support for RAM and RTC further reduce system cost. The IC supports 2wire, 3-wire and 4-wire sing le-phase and dual-phase residential met ering along with tamper-detection mecha nisms. Maximum design flexibility is pr ovided by multiple UARTs, I2C, μWire, up to 18 DIO pins and in-system program mable FLASH memory, which can be update d with data or application code in operation. A complete array of IC.
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