Features: High Capacity • 75,000 to 1 million System Gates • 27k to 198kbits of Two-Port SRAM • 66 to 712 User I/OsReprogrammable Flash Technology • 0.22 4LM Flash-based CMOS Process • Live at Power-Up, Single-Chip Solution • No Configuration Device Required ...
APA600: Features: High Capacity • 75,000 to 1 million System Gates • 27k to 198kbits of Two-Port SRAM • 66 to 712 User I/OsReprogrammable Flash Technology • 0.22 4LM Flash-based CMOS...
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Parameter |
Condition |
Minimum |
Maximum |
Units |
Supply Voltage Core (VDD ) |
|
0.3 |
3.0 |
V |
Supply Voltage I/O Ring (VDDP) |
|
0.3 |
4.0 |
V |
DC Input Voltage |
|
0.3 |
VDDP + 0.3 |
V |
PCI DC Input Voltage |
|
-1.0 |
VDDP + 1.0 |
V |
PCI DC Input Clamp Current (absolute) |
VIN < 1 or VIN= VDDP + 1V |
10 |
|
mA |
LVPECL Input Voltage |
|
0.3 |
VDDP + 0.5 |
V |
GND |
|
0 |
0 |
V |
The APA600 ProASICPLUS family of devices, Actel's second generation Flash FPGAs, offers enhanced performance over Actel's ProASIC family. It combines the advantages of ASICs with the benefits of programmable devices through nonvolatile Flash technology. This enables engineers to create high-density systems using existing ASIC or FPGA design flows and tools. In addition, the ProASICPLUS family offers a unique clock conditioning circuit based on two on-board phase-locked loops (PLLs). The APA600 family offers up to 1 million system gates, supported with up to 198kbits of 2-port SRAM and up to 712 user I/Os, all providing 50 MHz PCI performance.
Advantages to the designer extend beyond performance. Unlike SRAM-based FPGAs, four levels of routing hierarchy simplify routing, while the use of Flash technology allows all functionality to be live at power-up. No external Boot PROM is required to support device programming. While on-board security mechanisms prevent all access to the program information, reprogramming can be performed in-system to support future design iterations and field upgrades. The device's architecture mitigates the complexity of ASIC migration at higher user volume. APA600 makes ProASICPLUS a cost-effective solution for applications in the networking, communications, computing, and avionics markets.
The APA600 ProASICPLUS family achieves its nonvolatility and reprogrammability through an advanced Flash-based 0.22m LVCMOS process with four-layers of metal. Standard CMOS design techniques are used to implement logic and control functions, including the PLLs and LVPECL inputs. This results in predictable performance fully compatible with gate arrays.
The ProASICPLUS architecture provides granularity comparable to gate arrays. The device core consists of a Sea-of-Tiles.. Each tile can be configured as a flip-flop, latch, or 3-input/1-output logic function by programming the appropriate Flash switches. The combination of fine granularity, flexible routing resources, and abundant Flash switches allow 100% utilization and over 95% routability for highly congested designs. Tiles and larger functions are interconnected through a 4-level routing hierarchy.
Embedded 2-port SRAM blocks with built-in FIFO/RAM control logic can have user-defined depth and width. Users can also select programming for synchronous or asynchronous operation, as well as parity generations or checking.
The unique clock conditioning circuitry in each APA600 includes two clock conditioning blocks. Each block provides a PLL core, delay lines, phase shifts (0°, 90°, 180°, 270°), and clock multipliers/dividers, as well as the circuitry needed to provide bidirectional access to the PLL. The PLL block contains four programmable frequency dividers, which allow the incoming clock signal to be divided by a wide range of factors from 1 to 64. The clock conditioning circuit also delays or advances the incoming reference clock up to 8 ns (in increments of 0.25 ns). The PLL can be configured internally or externally during operation without redesigning or reprogramming the part. In addition to the PLL, there are two LVPECL differential input pairs to accommodate high speed clock and data inputs.
To support customer needs for more comprehensive, lower cost board-level testing, Actel's ProASICPLUS devices are fully compatible with IEEE Standard 1149.1 for test access port and boundary-scan test architecture. For more information concerning the Flash FPGA implementation, please refer to the "Boundary Scan (JTAG)" section on page 13.
APA600 ProASICPLUS devices are available in a variety of high-performance plastic packages. Those packages and the performance features discussed above are described in more detail in the following sections.