 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
71M6403-IGTR Datasheet(PDF) 8 Page - Teridian Semiconductor Corporation |
|
||||||||||||||||||||||||||||||
71M6403-IGTR Datasheet(HTML) 8 Page - Teridian Semiconductor Corporation |
|
|
8 / 75 page  71M6403 Electronic Trip Unit SEPTEMBER 2006 Page: 8 of 75 © 2006 TERIDIAN Semiconductor Corporation REV 1.0 HARDWARE DESCRIPTION Hardware Overview The TERIDIAN 71M6403 single chip Electronic Trip Unit integrates all primary functional blocks required to implement a solid- state circuit breaker. Included on chip are an analog front end (AFE), an 8051-compatible microprocessor (MPU) which executes one instruction per clock cycle (80515), an independent 32-bit digital computation engine (CE), a voltage reference, LCD drivers, RAM, FLASH memory, and a variety of I/O pins. Various current sensor technologies are supported including Current Transformers (CT), Resistive Shunts, and Rogowski (di/dt) Coils. Measurements can be displayed on either a 3V or a 5V LCD. Flexible mapping of LCD display segments will facilitate integration with any LCD format. The design trade-off between the number of LCD segments and DIO pins can be flexibly configured using memory-mapped I/O to accommodate various requirements. The 71M6403 includes several I/O peripheral functions that improve the functionality of the device and reduce the component count for most circuit breaker applications. The I/O peripherals include two UARTs, digital I/O, comparator inputs, LCD display drivers, I 2C interface and an optical/IR interface. One of the two internal UARTs (UART1) is adapted to support an Infrared LED with higher internal drive output and sense input. It can also be configured to function as a standard UART with normal digital IOs. A block diagram of the chip is shown in Figure 1. A detailed description of various hardware blocks follows. External Components The 71M6403 is optimized for fast startup. To achieve this, an external 19.6608 MHz oscillator is required to drive CK, the primary clock input. The frequency for the CK38 input is generated from the 19.6608 MHz oscillator using an inexpensive ‘HC4040 counter chip. The divide-by-512 output of the ‘HC4040 generates a 38.4 kHz signal. Analog Front End (AFE) The AFE of the TERIDIAN 71M6403 Electronic Trip Unit IC is comprised of an input multiplexer, a delta-sigma A/D converter with internal voltage reference, followed by an FIR filter. A block diagram of the AFE is shown in Figure 3. Multiplexer The input multiplexer supports eight input signals that are applied to the pins I0 through I5, INEUTRAL plus the output of the internal temperature sensor. The multiplexer can be operated in two modes: • During a normal multiplexer cycle, the signals from the six pins I0 through I5 are selected. • During the alternate multiplexer cycle, the temperature signal (TEMP) , INEUTRAL, and I1, I3, I4, I5 (EQU = 101) signal sources are selected. Use of the alternate multiplexer cycle is not recommended for fast response circuit breaker applications. Upon enabling the alternate multiplexer cycle, the I0 and I2 current samples are interrupted delaying over current trip detection response time. Regular multiplexer sequence Mux State: Alternate multiplexer sequence Mux State: 0 1 2 3 4 5 0 1 2 3 4 5 I0 I1 I2 I3 I4 I5 TEMP I1 INEUTRAL I3 I4 I5 Table 1: Inputs Selected in Regular and Alternate Multiplexer Cycles (EQU = 101) Note: Use of the alternate multiplexer cycle is not recommend. |
Similar Part No. - 71M6403-IGTR |
|
Similar Description - 71M6403-IGTR |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.NET |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
