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
(USD)		 Quantity
X5645P
X5645P

IC CPU SUPRV 64K EE RST HI 8DIP
Data Sheet
Negotiable 
Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
X5643
X5643
Other

Data Sheet
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X5643P
X5643P

IC CPU SUPRV 64K EE RST LO 8DIP
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X5643S14
X5643S14

IC CPU SUPRV 64K EE RST LO SO14
Data Sheet
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X5643S14-2.7
X5643S14-2.7

IC CPU SUPRV 64K EE RST LO SO14
Data Sheet
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X5643S14I
X5643S14I

IC CPU SUPRV 64K EE RST LO SO14
Data Sheet
Negotiable 
X5643S14I-2.7
X5643S14I-2.7

IC CPU SUPRV 64K EE RST LO SO14
Data Sheet
Negotiable