atf1508re ATMEL Corporation, atf1508re Datasheet - Page 2

• Manufacturer Part Number: atf1508re
• Description: High- Performance Cpld
• Manufacturer: ATMEL Corporation

Enhanced Features
1. Description
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ATF1508RE
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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.
show the pin assignments for the 100-lead TQFP and 132-ball CBGA packages, respectively.
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)
Figures 1-1 and 1-2
3682A–PLD–10/08