ATF16V8C-7PU

Overview

The ATF16V8C-7PU is a high-performance Electrically Erasable CMOS (EECMOS) programmable logic device manufactured by Microchip Technology. It utilizes EE Flash memory technology and features eight macrocells with dedicated product terms. The component operates at a maximum pin-to-pin propagation delay of 7.5 ns and supports a supply voltage range of 4.75 V to 5.25 V. It is housed in a 20-lead Plastic Dual Inline Package (PDIP). The device includes an optional pin-controlled power-down mode that reduces current consumption to less than 100 μA.

Feature Summary

• High-speed EECMOS architecture with 7.5 ns maximum pin-to-pin delay
• Eight macrocells supporting registered, combinatorial, or I/O configurations
• Pin-controlled power-down mode reducing supply current below 100 μA
• Internal input and I/O pin-keeper circuits eliminate need for external pull-up resistors

Applications

• Direct replacement for industry-standard 20-pin PAL devices
• State machine initialization utilizing power-up reset feature
• Low-power digital logic applications requiring reprogrammability

Procurement Notes

Verify the package type corresponds to the 'P' suffix indicating a 20-lead PDIP. Confirm the speed grade matches the '7' designation for 7.5 ns delay. Ensure the design file specifies the power-down option if low standby current is required, as this configuration affects pin 4 functionality.

Selection Notes

Select this part when replacing legacy 20-pin PALs such as the 16R8 or 16L8 families. Choose the industrial temperature range variant (-40°C to +85°C) for broader environmental operation. Consider the registered mode for sequential logic or complex mode for flexible I/O management.

Part Context

This component belongs to the ATF16V8C family of simple programmable logic devices. It is designed to emulate various 20-pin PAL architectures through software-configurable modes. The device integrates advanced flash technology allowing for 100 erase/write cycles and 20-year data retention.

Replacement Considerations

ATF16V8C-7PC

FAQ

How does the power-down mode affect pin 4?

When the power-down feature is enabled in the design file, pin 4 functions as the power-down control pin. If disabled, pin 4 serves as a standard logic input.

What is the purpose of the pin-keeper circuits?

The internal pin-keeper circuits hold pins at their previous logic state when undriven, preventing floating inputs and reducing system power consumption without requiring DC current from pull-up resistors.

Which PAL devices can be emulated using the registered mode?

In registered mode, the device can emulate 16R8, 16RP8, 16R6, 16RP6, 16R4, and 16RP4 devices.