Features Industry-standard Architecture Emulates Many 20-pin PALs Low-cost Easy-to-use Software Tools High-speed Electrically-erasable Programmable Logic Devices 12 ns Maximum Pin-to-pin Delay Low-power - 5 A (Typ) Standby Current CMOS and TTL Compatible Inputs and Outputs Input and I/O Pin Keeper Circuits High- Advanced Flash Technology Reprogrammable performance 100% Tested High-reliability CMOS Process EE PLD 20 Year Data Retention 100 Erase/Write Cycles 2,000V ESD Protection 200 mA Latchup Immunity ATF16V8CZ Commercial and Industrial Temperature Ranges Dual-in-line and Surface Mount Packages in Standard Pinouts PCI-compliant Green (Pb/Halide-free/RoHS Compliant) Package Options Available 1. Description The ATF16V8CZ is a high-performance EECMOS programmable logic device that uti- lizes Atmels proven electrically-erasable Flash memory technology. Speeds down to 12 ns and a 5 A (Typ) edge-sensing power-down mode are offered. All speed ranges are specified over the full 5V 10% range for industrial temperature ranges 5V 5% for commercial range 5-volt devices. The ATF16V8CZ incorporates a superset of the generic architectures, which allows direct replacement of the 16R8 family and most 20-pin combinatorial PLDs. Eight out- puts are each allocated eight product terms. Three different modes of operation, configured automatically with software, allow highly complex logic functions to be realized. The ATF16V8CZ can significantly reduce total system power, thereby enhancing sys- tem reliability and reducing power supply costs. When all the inputs and internal nodes are not switching, supply current drops to less than 5 A typically. This auto- matic power-down feature (or sleep mode) allows for power savings in slow clock systems and asynchronous applications. Also, the pin-keeper circuits eliminate the need for internal pull-up resistors along with their attendant power consumption. 0453HPLD7/05Figure 1-1. Block Diagram 2. Pin Configuration and Pinouts Table 2-1. Pinouts - All Pinouts Top View Pin Name Function CLK Clock I Logic Inputs I/O Bi-directional Buffers OE Output Enable VCC +5V Supply Figure 2-1. TSSOP I/CLK 1 20 VCC I1 2 19 I/O I2 3 18 I/O I3 4 17 I/O I4 5 16 I/O I5 6 I/O 15 I6 7 14 I/O I7 8 13 I/O I8 9 12 I/O GND 10 11 I9/OE Figure 2-2. DIP/SOIC I/CLK 1 20 VCC I1 2 19 I/O I2 3 18 I/O I3 4 17 I/O I4 5 16 I/O I5 6 15 I/O I6 7 14 I/O I7 8 13 I/O I8 9 12 I/O GND 10 11 I9/OE 2 ATF16V8CZ 0453HPLD7/05