Product Summary

The X5645P is a CPU Supervisor with 64Kbit SPI EEPROM. It combines four popular functions, Poweron Reset Control, Watchdog Timer, Supply Voltage Supervision, and Block Lock Protect Serial EEPROM Memory in one package. This combination lowers system cost, reduces board space requirements, and increases reliability. Applying power to the X5645P activates the power-on reset circuit which holds RESET/RESET active for a period of time. This allows the power supply and oscillator to stabilize before the processor can execute code.

Parametrics

X5645P absolute maximum ratings: (1)Temperature under bias: -65℃ to +135℃; (2)Storage temperature: -65℃ to +150℃; (3)Voltage on any pin with respect to VSS: -1.0V to +7V; (4)D.C. output current: 5mA; (5)Lead temperature (soldering, 10 seconds): 300℃.

Features

X5645P features: (1)Selectable watchdog timer; (2)Low VCC detection and reset assertion; (3)Determine watchdog or low voltage reset with a volatile flag bit; (4)Long battery life with low power consumption; (5)64Kbits of EEPROM; (6)Built-in inadvertent write protection; (7)2MHz SPI interface modes (0,0 & 1,1); (8)Minimize EEPROM programming time; (9)2.7V to 5.5V and 4.5V to 5.5V power supply operation; (10)Available packages -lead PDIP, 14-lead SOIC.

Diagrams

X5645P block diagram

Image Part No Mfg Description Data Sheet Download Pricing
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X5645P
X5645P


IC CPU SUPRV 64K EE RST HI 8DIP

Data Sheet

Negotiable 
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X5643
X5643

Other


Data Sheet

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X5643P
X5643P


IC CPU SUPRV 64K EE RST LO 8DIP

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X5643S14
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X5643S14-2.7
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X5643S14I
X5643S14I


IC CPU SUPRV 64K EE RST LO SO14

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X5643S14I-2.7
X5643S14I-2.7


IC CPU SUPRV 64K EE RST LO SO14

Data Sheet

Negotiable