ATF1502BE-5AX44 Atmel, ATF1502BE-5AX44 Datasheet - Page 4

• Manufacturer Part Number: ATF1502BE-5AX44
• Description: IC CPLD 64MC 1.8V 44-TQFP
• Manufacturer: Atmel
• Series: ATF1502BEr

Specifications of ATF1502BE-5AX44

• Programmable Type: In System Programmable (min 10K program/erase cycles)
• Delay Time Tpd(1) Max: 7.0ns
• Voltage Supply - Internal: 1.7 V ~ 1.9 V
• Number Of Macrocells: 32
• Number Of I /o: 32
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 44-TQFP, 44-VQFP
• Features: CMOS/TTL Compatible
• Voltage: 1.8V
• Memory Type: EEPROM
• For Use With: ATF15XX-DK3 - KIT DEV FOR ATF15XX CPLD'S
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of Logic Elements/cells: -

Figure 1-3.
1.1
1.2
4
Product Terms and Select Mux
OR/XOR/CASCADE Logic
ATF1502BE
ATF1502BE Macrocell
Each ATF1502BE macrocell has five product terms. Each product term receives as its inputs all
signals from both the global bus and regional bus.
The product term select multiplexer (PTMUX) allocates the five product terms as needed to the
macrocell logic gates and control signals. The PTMUX programming is determined by the design
compiler, which selects the optimum macrocell configuration.
The ATF1502BE’s logic structure is designed to efficiently support all types of logic. Within a sin-
gle macrocell, all the product terms can be routed to the OR gate, creating a 5-input AND/OR
sum term. With the addition of the CASIN from neighboring macrocells, this can be expanded to
as many as 40 product terms with minimal additional delay.
The macrocell’s XOR gate allows efficient implementation of compare and arithmetic functions.
One input to the XOR comes from the OR sum term. The other XOR input can be a product term
or a fixed high or low level. For combinatorial outputs, the fixed level input allows polarity selec-
tion. For registered functions, the fixed levels allow DeMorgan minimization of product terms.
The XOR gate is also used to emulate T- and JK-type flip-flops.
BURIED FEEDBACK
TRIGGER
SCHMITT
3492A–PLD–12/05