ATF16V8B-15PU

Overview

The ATF16V8B-15PU is a high-performance Electrically-Erasable Programmable Logic Device (EEPLD) manufactured by Microchip Technology. It utilizes Atmel's Flash memory technology and features eight macrocells with dedicated product terms. The device operates at a maximum propagation delay of 15 ns and supports a supply voltage of 5.0V ± 10%. Designed for industrial applications, it functions within an ambient temperature range of -40°C to +85°C. The component is housed in a 20-lead Plastic Dual Inline Package (PDIP), specifically package code 20P3, facilitating through-hole mounting.

Feature Summary

• Eight macrocells with flexible configuration modes: Registered, Complex, and Simple.
• Industrial temperature range operation (-40°C to +85°C).
• CMOS and TTL compatible inputs and outputs with internal pull-up resistors.
• Advanced Flash technology providing 100 erase/write cycles and 20-year data retention.

Applications

• Direct replacement for 16R8 series and most 20-pin combinatorial PLDs.
• Emulation of standard 20-pin PAL devices such as 16R8, 16L8, and 10L8.
• State machine initialization utilizing power-up reset functionality.

Procurement Notes

Verify the specific ordering suffix 'PU' corresponds to the 20-lead PDIP package (20P3) and the 15 ns speed grade. Confirm that the procurement specification aligns with the Industrial Temperature Range (-40°C to +85°C) and the 5.0V ± 10% operating voltage requirements defined in the datasheet electrical characteristics.

Selection Notes

Select this component when a reprogrammable logic solution is required to replace legacy 20-pin PAL architectures. The ATF16V8B-15PU is suitable for designs needing up to ten input pins and eight I/O pins. Ensure the design accommodates the 15 ns maximum pin-to-pin delay and the 5.0V power supply tolerance specified for the industrial grade variant.

Part Context

This part belongs to the ATF16V8B family of EEPLDs. The 'B' designation indicates the base architecture, while the '-15' suffix specifies the 15 ns speed grade. The 'PU' suffix identifies the 20-lead PDIP package. This family allows software-configurable operation modes to emulate various industry-standard logic devices without hardware changes.

Replacement Considerations

The ATF16V8BQL variants offer lower standby current but share the same pinout and logical architecture. When replacing older commercial grade parts, ensure the new industrial grade components meet the thermal requirements of the application environment.

FAQ

How are the macrocells configured in the ATF16V8B-15PU?

The eight macrocells can be configured via software into three modes: Registered (for flip-flop usage), Complex (for combinatorial outputs with OE control), or Simple (for dedicated combinatorial outputs).

What is the function of Pin 1 and Pin 11 in Registered Mode?

In Registered Mode, Pin 1 is permanently configured as the Clock (CLK) input and Pin 11 is permanently configured as the Output Enable (OE) input for the registered outputs.

Does the device support automatic power-down?

Automatic power-down via Input Transition Detection (ITD) is a feature of the ATF16V8BQL variant. The standard ATF16V8B does not specify this automatic low-power mode in the provided documentation.