Intersil HSP45240JC-50

HSP45240 generates specialized block-oriented addresses for processing large data sets. A 24-bit generator feeds a 24 x 24 crosspoint switch so software can rearrange address bits, including the bit-reversal sequence used in FFT processing. It can also operate as two independent 12-bit sequencers.

• Block-oriented 24-bit sequencing for address generation.
• Configurable dual 12-bit sequencer operation.
• 24 x 24 crosspoint switch for address-bit remapping.
• Programmable delay on twelve output lines.
• Multi-chip synchronization and standard microprocessor configuration interface.

The original Intersil data sheet specifies DC-to-50 MHz clock operation, 100 pF output-drive capability, multi-chip control/status signals and a processor interface using seven data lines with chip select, address and write controls. The device supports read/write address generation, bit reversal and pipeline-delay alignment. It is a fully static CMOS design; all inputs and outputs except the clock are described as TTL compatible.

The HSP45240JC-50 ordering table specifies 68-lead PLCC, package drawing N68.95. The catalog says "68-LCC (J-Lead)", consistent with a PLCC family classification, but the exact package-registry mapping is not confirmed. The local 68-PLCC JPG is missing. Use the manufacturer N68.95 drawing for board and socket dimensions.

Assembly checks

• Verify N68.95 body and J-lead dimensions.
• Check pin-one orientation against the exact board footprint.
• Observe electrostatic-discharge handling requirements.

The manufacturer pinout identifies 24 output address lines, processor-interface D0-D6, CS, A0 and WR, clock and reset, output enables OEH/OEL, STARTIN/STARTOUT, delay-block input, BUSY, DONE, BLOCKDONE and ADDVAL. Use the 68-pin PLCC pin table, not the separately offered 68-pin PGA mapping.

Check the manufacturer's timing and electrical tables for design margins; feature values are not substitutes for board-level qualification.

The database contains HSP45240JC-33 and HSP45240GC-50. The former has a different speed grade; the latter is listed in a 68-pin PGA, not a PLCC. These are comparison candidates only. Verify clock grade, package, pinout, timing and sourcing before any replacement decision.

The Renesas-hosted Intersil HSP45240 data sheet, FN2489.4, supplies the exact -50 ordering information, 68-lead PLCC option, feature list, pinout and operating conditions. It is the primary technical source for this page. Obtain the latest applicable errata and package-control documents for production service.

• One- and two-dimensional digital filtering.
• FFT address generation and bit-reversed data access.
• Pan/zoom image addressing and matrix operations.

Verify markings, speed suffix, date/lot traceability, ESD handling and package condition. The local catalog lists 4,370 units at USD 25.73, minimum quantity 11, with no tiers. An indexed DigiKey/Rochester exact-code offer also lists 4,370 units but USD 31.66 at ten; an LCSC third-party offer lists 100 at USD 27.6297 for one and lower bulk tiers. These are seller claims, not reconciled procurement evidence for the local price or MOQ. Catalog inventory and pricing are left unchanged.

Validate the N68.95 footprint, 5 V power distribution, 50 MHz timing, address-output mapping, pipeline delay, reset and control sequencing. Package registry/JPG and commercial pricing remain unresolved. Keep this page in manual review with noindex; do not publish until all checks pass.