ATF1508ASVL-20JC84 Atmel, ATF1508ASVL-20JC84 Datasheet - Page 7

• Manufacturer Part Number: ATF1508ASVL-20JC84
• Description: IC CPLD 20NS 84PLCC
• Manufacturer: Atmel
• Series: ATF1508ASV(L)r

Specifications of ATF1508ASVL-20JC84

• Programmable Type: In System Programmable (min 10K program/erase cycles)
• Delay Time Tpd(1) Max: 20.0ns
• Voltage Supply - Internal: 3 V ~ 3.6 V
• Number Of Macrocells: 128
• Number Of I /o: 64
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 84-PLCC
• Voltage: 3.3V
• Memory Type: EEPROM
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -
• Number Of Logic Elements/cells: -
• Other names: ATF1508ASVL20JC84

Programmable Pin-
keeper Option for
Inputs and I/Os
Speed/Power
Management
1408H–PLD–7/05
The ATF1508ASV(L) offers the option of programming all input and I/O pins so that “pin-
keeper” circuits can be utilized. When any pin is driven high or low and then subse-
quently left floating, it will stay at that previous high- or low-level. This circuitry prevents
unused input and I/O lines from floating to intermediate voltage levels, which causes
unnecessary power consumption and system noise. The keeper circuits eliminate the
need for external pull-up resistors and eliminate their DC power consumption.
Input Diagram
The ATF1508ASV(L) has several built-in speed and power management features. The
ATF1508ASV(L) contains circuitry that automatically puts the device into a low-power
standby mode when no logic transitions are occurring. This not only reduces power con-
sumption during inactive periods, but also provides proportional power-savings for most
applications running at system speeds below 5 MHz.
To further reduce power, each ATF1508ASV(L) macrocell has a reduced-power bit fea-
ture. This feature allows individual macrocells to be configured for maximum power-
savings. This feature may be selected as a design option.
I/O Diagram
ATF1508ASV(L)
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