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NJU7291 Datasheet

Part Number NJU7291
Manufacturers New Japan Radio
Logo New Japan Radio
Description SYSTEM RESET IC
Datasheet NJU7291 DatasheetNJU7291 Datasheet (PDF)

NJU7291 SYSTEM RESET IC WITH WATCHDOG TIMER ■ GENERAL DESCRIPTION ■ PACKAGE OUTLINE The NJU7291 is a system reset IC with watchdog timer. It can detect an instantaneous voltage drop and break, and generates a reset signal. The NJU7291 provides a fail-safe function with an internal watchdog timer on various microcomputer systems. It is available in 8-lead DIP and MSOP (TVSP) packages. NJU7291RB1 (MSOP8 (TVSP8)) NJU7291D (DIP8) ■ FEATURES ● Supply Voltage Range : V+ = 2.5 V to 7.0 V ● RES.

  NJU7291   NJU7291






Part Number NJU7296
Manufacturers New Japan Radio
Logo New Japan Radio
Description SYSTEM RESET IC
Datasheet NJU7291 DatasheetNJU7296 Datasheet (PDF)

NJU7296 SYSTEM RESET IC WITH DELAY CIRCUIT ■ GENERAL DESCRIPTION The NJU7296 is a system reset IC with built-in delay circuit that monitors the status of a power line, and outputs a reset signal to the microcomputer. The NJU7296 outputs a reset signal when fall below the detection voltage. Delay times are fixed internally and those are set in each of rising and falling. It is possible to monitor multiplex power line by combination of NJU7296 because output voltage VOUT is kept Low level when E.

  NJU7291   NJU7291







Part Number NJU7295
Manufacturers New Japan Radio
Logo New Japan Radio
Description SYSTEM RESET IC
Datasheet NJU7291 DatasheetNJU7295 Datasheet (PDF)

NJU7295 SYSTEM RESET IC WITH DELAY CIRCUIT ■ GENERAL DESCRIPTION The NJU7295 is a system reset IC with built-in delay circuit that monitors the status of a power line, and outputs a reset signal to the microcomputer. The NJU7295 outputs a reset signal when exceeds the detection voltage. Therefore it is possible to control the microcomputer by detecting a rising edge of a power line. Delay times are fixed internally and those are set in each of rising and falling. It is possible to monitor mult.

  NJU7291   NJU7291







SYSTEM RESET IC

NJU7291 SYSTEM RESET IC WITH WATCHDOG TIMER ■ GENERAL DESCRIPTION ■ PACKAGE OUTLINE The NJU7291 is a system reset IC with watchdog timer. It can detect an instantaneous voltage drop and break, and generates a reset signal. The NJU7291 provides a fail-safe function with an internal watchdog timer on various microcomputer systems. It is available in 8-lead DIP and MSOP (TVSP) packages. NJU7291RB1 (MSOP8 (TVSP8)) NJU7291D (DIP8) ■ FEATURES ● Supply Voltage Range : V+ = 2.5 V to 7.0 V ● RESET Detection Voltage : VRL = ± 1.0 % and Adjustable Detection Voltage with External Resistance ● Rising RESET Hold Time and Watchdog Timer RESET Time Setting Ratio = 30 : 1 ● Configurable Watchdog Timer Watching Time Independent Setting ● Configurable Stopping Watchdog Timer Function ● Package Outline : MSOP8 (TVSP8)*, DIP8 *MEET JEDEC MO-187-DA / THIN TYPE ■ PIN CONFIGRATION / PIN FUNCTION PIN No. PIN NAME FUNCTION 1. CR External Capacitor Pin for Setting Reset Pin 1 8 2. CW External Capacitor Pin for Clock Pin NJU7291 2 7 3. CK Clock Input Pin 3 6 4. GND Ground Pin 5. V+ Power Supply Pin 4 5 6. WDEN External Register Pin for Setting Watchdog Timer Pin 7. RSADJ External Register Pin for Setting Reset Pin 8. RESET Reset Signal Output Pin ■ BLOCK DIAGRAM RSADJ 7 RD1 RD2 RD3 V+ 5 REG VREF CR Control WDT Enable Reset Enable V+ CK 3 100kΩ 4 GND CW Control 100kΩ 6 WDEN Ver.2013-08-28 8 RESET V+ 1 CR V+ CR CW 2 CW -1- NJU7291 ■ ABSOLUTE MAXIMUM RATING ( Ta .


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