ATF1508RE datasheet(2/31 Pages) ATMEL

2 / 31 page

3682A–PLD–10/08

ATF1508RE

Enhanced Features

• Improved Connectivity (Additional Feedback Routing, Alternate Input Routing)

• Output Enable Product Terms

• Outputs Can Be Configured for High or Low Drive

• Combinatorial Output with Registered Feedback and Vice Versa within each Macrocell

• Three Global Clock Pins

• Fast Registered Input from Product Term

• Pull-up Option on TMS and TDI JTAG Pins

• OTF (On-the-Fly) Reconfiguration Mode

• DRA (Direct Reconfiguration Access)

Description

The ATF1508RE is a high-performance, high-density complex programmable logic device

(CPLD) that utilizes Atmel’s proven electrically-erasable memory technology. With 128 logic

macrocells and up to 84 inputs, it easily integrates logic from several TTL, SSI, MSI, LSI and

classic PLDs. The ATF1508RE’s enhanced routing switch matrices increase usable gate count

and the odds of successful pin-locked design modifications.

The ATF1508RE has up to 80 bi-directional I/O pins, four dedicated input pins, 1 internal voltage

regulator supply input pin (VCCIRI), 6 I/O VCC pins (VCCIOA and VCCIOB), 8 ground pins

(GND and 1 internal voltage regulator output pin (VCCIR0). Each dedicated input pin can also

serve as a global control signal, register clock, register reset or output enable. Each of these

control signals can be selected for use individually within each macrocell. Figures 1-1 and 1-2

show the pin assignments for the 100-lead TQFP and 132-ball CBGA packages, respectively.

ATF1508RE Datasheet(PDF) 2 Page - ATMEL Corporation