PT8A2514APE

Programmable Timers And Oscillators Overview

The PT8A2514APE is a CMOS LSI controller designed for toaster applications, operating within a supply voltage range of 3.5V to 5.5V. It integrates power-on reset, logic control, output drivers, key scanning, and timer circuits. The device supports Defrost, Reheat, and Bagel functions with an adjustable timer ranging from 30 seconds to 10 minutes via external R/C components. It features an internal oscillator and an external R/C oscillator circuit capable of generating a system frequency around 8.192 kHz. The chip is housed in a lead-free DIP-8 package.

Programmable Timers And Oscillators Feature Summary

• Integrated Defrost, Reheat, and Bagel function support with interlock logic between Defrost and Reheat keys.
• Adjustable timer functionality ranging from 30 seconds to 10 minutes using external resistor and capacitor components.
• Built-in power-on reset circuit and internal oscillator for system stability and signal checking.
• Low component count design with relay output disable capability without requiring an external oscillator.

Programmable Timers And Oscillators Applications

• Toaster Controller

Programmable Timers And Oscillators Procurement Notes

Verify the ordering suffix 'E' indicates Pb-free and Green compliance as specified in the datasheet notes. Confirm the package type is Lead-free DIP-8. Ensure the application environment operates within the recommended temperature range of 0°C to 85°C and supply voltage limits of 3.5V to 5.5V.

Programmable Timers And Oscillators Selection Notes

Select this component for dedicated toaster control logic requiring specific Defrost, Reheat, and Bagel timing sequences. The external R/C oscillator allows timer adjustment based on specific resistance and capacitance values, typically targeting an 8.192 kHz frequency with R1=47KΩ and C1=332. Ensure input pulse requirements match: negative pulses for Defrost/Reheat and positive pulses for Bagel activation.

Programmable Timers And Oscillators Part Context

The PT8A2514A is part of a series of specialized appliance controllers manufactured by Diodes Incorporated (formerly Pericom Semiconductor). It is specifically engineered for small kitchen appliances like toasters, offering a cost-effective solution with minimal external components. The device replaces discrete logic and timing circuits with a single integrated CMOS LSI chip.

Programmable Timers And Oscillators Replacement Considerations

The datasheet references the PT8A2514/BPE and PT8A2515/6NE in pin configuration diagrams. Verify compatibility with these variants if substituting, noting potential differences in pinout or functional specifications not detailed in this document.