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N84C163WD25TG Datasheet(PDF) 1 Page - ON Semiconductor |
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N84C163WD25TG Datasheet(HTML) 1 Page - ON Semiconductor |
1 / 11 page © Semiconductor Components Industries, LLC, 2016 September, 2016 − Rev. P0 1 Publication Order Number: N84C163/D N84C163 Product Preview Supervisory Circuits with I2C Serial CMOS EEPROM, Precision Reset Controller and Watchdog Timer (16K) Description The N84C163 is a complete memory and supervisory solution for microcontroller−based systems. A serial EEPROM memory (16K) with hardware memory write protection, a system power supervisor with brown out protection and a watchdog timer are integrated together in low power CMOS technology. Memory interface is via an I2C bus. The 1.6−second watchdog circuit returns a system to a known good state if a software or hardware glitch halts or “hangs” the system. The N84C163 watchdog monitors the WDI input pin. The power supply monitor and reset circuit protects memory and system controllers during power up/down and against brownout conditions. Five reset threshold voltages support 5 V, 3.3 V and 3 V systems. If power supply voltages are out of tolerance reset signals become active, preventing the system microcontroller, ASIC or peripherals from operating. Reset signals become inactive typically 200 ms after the supply voltage exceeds the reset threshold level. With both active high and low reset signals, interface to microcontrollers and other ICs is simple. In addition, a reset pin can be used as a debounced input for pushbutton manual reset capability. The N84C163 memory features a 16−byte page. In addition, hardware data protection is provided by a write protect pin WP and by a VCC sense circuit that prevents writes to memory whenever VCC falls below the reset threshold or until VCC reaches the reset threshold during power up. This device is available in a green SOIC−8 package. Features • Watchdog Timer Input (WDI) • 400 kHz I2C Bus Compatible • 2.7 V to 6.0 V Operation • Low Power CMOS Technology • 16−Byte Page Write Buffer • Built−in Inadvertent Write Protection ♦ VCC Lock Out ♦ Write Protection Pin, WP • Active High or Low Reset ♦ Precision Power Supply Voltage Monitor ♦ 5 V, 3.3 V and 3 V Systems ♦ Five Threshold Voltage Options • 1,000,000 Program/Erase Cycles • Manual Reset • 100 Year Data Retention • 8−Pin SOIC Package • Commercial and Industrial Temperature Ranges • These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant This document contains information on a product under development. ON Semiconductor reserves the right to change or discontinue this product without notice. ORDERING INFORMATION www.onsemi.com SOIC−8 CASE 751BD For Ordering Information details, see page 10. 1 2 3 4 8 7 6 5 WDI RESET WP GND VCC RESET SCL SDA N84C163 PIN CONFIGURATION PIN FUNCTIONS Pin Name Function WDI Watchdog Timer Input RESET Active Low Reset I/O WP Write Protect GND Ground SDA Serial Data/Address SCL Clock Input RESET Active High Reset I/O VCC Power Supply SOIC 8 Lead |
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