ATF16V8C-5JC

Overview

The ATF16V8C-5JC is a high-performance electrically-erasable programmable logic device (EE PLD) manufactured by Microchip Technology. It utilizes EECMOS Flash memory technology and features a maximum pin-to-pin delay of 5 ns. The component operates within a commercial temperature range of 0°C to +70°C with a supply voltage of 5V ± 5%. It includes an optional pin-controlled power-down mode that reduces current consumption to less than 100μA. The device incorporates input and I/O pin-keeper circuits, eliminating the need for internal pull-up resistors.

Feature Summary

• High-speed performance with a maximum propagation delay of 5 ns
• Advanced Flash technology providing reprogrammability and 20-year data retention
• Pin-controlled power-down mode reducing supply current to under 100μA
• Internal pin-keeper circuits maintain logic levels without DC current draw

Applications

• Direct replacement for 16R8 family and most 20-pin combinatorial PLDs
• Emulation of industry-standard 20-pin PAL devices
• Complex logic function realization using configurable macrocells

Procurement Notes

Verify package type compatibility during procurement. The suffix 'J' indicates a 20-lead Plastic J-leaded Chip Carrier (PLCC). Confirm RoHS compliance status as ordering codes ending in 'U' or 'X' explicitly imply lead-free packaging, whereas standard suffixes may differ. Ensure design files account for the specific speed grade and temperature range requirements.

Selection Notes

Select this part when a 5 ns maximum delay is required for commercial applications (0°C to +70°C). For industrial temperature ranges (-40°C to +85°C), consider downgrading one speed grade from the 'I' to the 'C' device and de-rating power by 30%. Pin 4 can be configured as a power-down control input; if unused, it functions as a standard logic input.

Part Context

The ATF16V8C belongs to the Atmel ATF16V8C series of high-performance EE PLDs. This architecture supports three modes: registered, complex, and simple, allowing emulation of various PAL devices such as 16L8, 16H8, and 16P8. The device offers eight macrocells with dedicated product terms for flexible logic implementation.

Replacement Considerations

ATF16V8C-7JC is a slower variant (7.5 ns delay) available in the same PLCC package for commercial temperature ranges.

FAQ

How does the power-down feature affect output states?

In power-down mode, all output data and internal logic states are latched and held. Registered and combinatorial outputs remain valid, while outputs previously in a high-Z state remain high-Z.

What is the function of the pin-keeper circuits?

The pin-keeper circuits hold the previous value of each pin even when not driven externally. This prevents pins from floating to indeterminate levels and reduces system power by avoiding DC current associated with pull-up resistors.

Can the ATF16V8C-5JC emulate standard PAL devices?

Yes, the universal architecture allows it to emulate many 20-pin PAL devices across registered, complex, and simple modes, including subsets like 16R8, 16L8, and 10L8.