Intersil HSP45240JC-33

The HSP45240 generates address sequences for block-oriented signal and image processing. A 24-by-24 crosspoint switch maps internal address bits to 24 output pins; the device can alternatively serve as two independent 12-bit sequencers. Its processor interface programs the sequence and control settings.

• Block-oriented 24-bit address generation.
• Two independent 12-bit sequencing option.
• 24-by-24 crosspoint output mapping for transformations such as bit reversal.
• Programmable delay on 12 address outputs for pipeline alignment.
• Processor programming interface and multi-chip synchronization signals.

Start circuitry feeds the sequence generator and crosspoint switch. The upper 12 output bits pass through a register; the lower 12 can pass through selectable delay stages. STARTIN and STARTOUT support cascaded devices. ADDVAL, BLOCKDONE, DONE and BUSY report sequence state; separate output-enable controls gate the two output banks.

The manufacturer's exact-order table lists HSP45240JC-33 in a 68-lead PLCC with package drawing N68.95. LCDChip records 68-LCC (J-Lead) and its registry maps this to /upload/package/68-LCC.jpg. Confirm lead orientation, pin-one marker and mechanical dimensions from N68.95 before using any generic footprint.

Package checks

• Match N68.95 mechanical drawing.
• Verify socket or land pattern and pin one.
• Account for all supply and ground leads.

The registered JPG is missing locally and must be restored and reviewed before publication.

The manufacturer's PLCC pin table places OEL at pin 29, DLYBLK at pin 30 and STARTIN at pin 31. STARTOUT, ADDVAL, BUSY, BLOCKDONE and DONE are on pins 32, 33, 35, 36 and 37. OUT0-23 is the 24-bit address output bank. The D0-6, CS, A0 and WR signals form the processor control interface; OEH and OEL independently enable the upper and lower output groups.

Use the complete numbered PLCC table for schematic release; this is a functional summary.

Use manufacturer timing conditions and board loading for final limits.

The HSP45240JC-50 is a faster grade listed in the same family but is not an automatic drop-in: verify timing, power, package revision and qualification. Other address generators may differ in programming registers, crosspoint behavior, output delay or synchronization. No internal alternative link is shown without exact database and engineering verification.

The Intersil HSP45240 data sheet, FN2489.4, July 2004, is hosted by Renesas and includes the exact HSP45240JC-33 ordering entry, 68-lead PLCC pin descriptions, architecture and -33 AC timing column. Confirm document revision and device markings for legacy inventory.

• One- and two-dimensional filtering address generation.
• FFT address ordering and bit-reversal mapping.
• Pan, zoom and image-address transforms.
• Matrix operations and legacy DSP boards.

Verify the full JC-33 marking, 68-lead package, lot traceability, storage and ESD handling. Compare the seller's offered quantity and date code with purchase records. Electrical compatibility depends on timing, interface programming and the original board.

Review N68.95 mechanical details, complete pinout, 5 V supply/decoupling, -33 clock timing, processor-write timing, output loading and synchronization before design release. Missing package JPG and unverified current exact-code stock and tier prices block automatic publication.