71M6403
Electronic Trip Unit
SEPTEMBER 2006
Page: 1 of 75
©
2006 TERIDIAN Semiconductor Corporation
REV 1.0
GENERAL DESCRIPTION
The Teridian 71M6403 is an electronic trip unit (ETU) system-on-chip
device for air circuit breakers (ACB), molded case circuit breakers
(MCCB) and other types of intelligent switchgear. Utilizing Teridian’s
patented Single Converter Technology
, the 71M6403 incorporates a
22-bit delta-sigma ADC, 7 current sensor inputs, digital temperature
compensation, precision voltage reference, 32-bit programmable
computation engine, timers, Real Time Clock (RTC), two UARTs and a
single cycle execution 8-bit MCU.
Armed with an internal digital di/dt integrator, this programmable device
supports either current transformer (CT) or Rogowski-Coils for any or all
input channels and provides instantaneous and delayed over current,
earth-leakage, ground-fault and arc fault protection functions.
Furthermore, the device may be configured to support any number of
conventional or custom protection algorithms that fit specific load
configurations in the field.
The 71M6403 also includes a 5V LCD charge pump as well as 3V LCD
support with up to 168 pixels display and up to 22 DIO pins. Easy
conversion to ROM offers unprecedented cost structure for high volume
MCCB applications.
A complete suite of in-circuit emulator (ICE) and development tools, a
powerful real-time signal monitoring tool, programming libraries and
reference designs enable rapid development of advanced switchgear.
MPU
TIMERS
I0
I1
I2
I3
CK38
CK
VREF
RX
TX
TX
RX
COM0..3
V3.3A V3.3D
V2.5
VBIAS
I4
I5
SEG0..23
DIO 4,5
GNDA GNDD
SEG 24..27
DIO 4..11
SEG 32..41
DIO 12..21
ICE
88.88.8888
Accumulator Indicator
Trip Indicator
External EEPROM
COMPARATOR
Power
Fault
Detection
OPTO
SENSE
DRIVE
SERIAL PORTS
CLOCK
CONVERTER
LCD DRIVER
DIO, PULSE
COMPUTE
ENGINE
FLASH/
ROM
RAM
VOLTAGE REF
REGULATOR
LCD 5V
BOOST
Teridian
71M6403
3/5V LCD
TEMP
SENSOR
19.6608MHz
4040 Counter
Current
Sensors
INEUTRAL
V2
V1
DC in
INEUTRAL
FEATURES
22-bit Sigma-delta converter
Six main sensor inputs
One auxiliary input
Supports CT or Rogowski Coils
Internal di/dt integrators
< 5 msec. startup time
Better than 10ppm/
°
C accuracy
Instantaneous and delay trip
Peak & RMS current measurement
Calculated or measured GND
current
Power measurement functions
option
Internal temperature sensor
Digital temperature compensation
Independent 32-bit compute engine
Two UART ports
Two timers
Hardware watchdog
Internal power fault detector
Real Time Clock (RTC)
Battery backup (RTC, RAM)
8-bit MPU (80515) - 1 clock cycle
per instruction (5 Mhz max.)
LCD driver (
≤
168 pixels)
5V LCD charge pump
Up to 22 general purpose I/O pins
High speed serial interface (SSI)
I
2
C EEPROM interface
64KB Flash, 7KB RAM
Flash memory security
30mW @ 3.3V
100-lead LQFP package
electronic components distributor
