M4A3-32/32-7VNC48

Product Overview

M4A3-32/32-7VNC48 is a Lattice MACH 4/M4A3 CPLD from Lattice Semiconductor with 32 macrocells and an ordering-code I/O class of 32. It is intended for deterministic board-control functions such as wide decoding, state machines, sequencing and interface consolidation. Its nonvolatile configuration is available at power-up, while the full ordering code selects the speed, package, temperature and electrical variant that must match the original design.

The ordering record identifies the M4-generation supply option defined by the complete ordering code. The -7 token is a speed-grade designator, not a frequency rating by itself. The suffix maps to VNC package code. These details determine PCB compatibility, available I/O, timing limits, programming support and environmental suitability; a shared family name alone does not establish drop-in equivalence.

Architecture and Technical Characteristics

MACH 4 devices organize product-term macrocells into logic blocks linked by programmable interconnect. Registered or combinational macrocell modes, global clocks, reset and output-enable resources support predictable control paths. The density/I/O pair before the suffix is a fitting class, not a promise that every package terminal is user I/O. N and other ordering modifiers can change package bonding or device options, so the exact device entry in the design tools and pin table is controlling.

Key Features

• Manufacturer / historical brand: Lattice Semiconductor
• Full part number: M4A3-32/32-7VNC48
• Device classification: Lattice MACH 4/M4A3 CPLD
• Published logic capacity: 32 macrocells
• Ordering-code I/O class: 32; actual user I/O is package-dependent
• Configuration technology: nonvolatile product-term CPLD
• Voltage class: M4-generation supply option defined by the complete ordering code
• Speed-grade designator: -7; use the exact speed-grade AC table for guaranteed timing
• Package / ordering suffix: VNC package code; confirm the mechanical drawing and bonded user I/O
• Temperature / qualification: commercial-temperature ordering suffix
• Programming data: verify the exact JEDEC/device algorithm and whether blank or programmed material is required
• User I/O and footprint: confirm the official pin table; package terminals do not equal usable I/O

Applications

• Address decoding, chip-select and bus-control logic
• Reset, power sequencing and board-management state machines
• Interface glue, protocol qualification and deterministic control
• Legacy platform repair and programmed-device replacement
• Compact registered logic, counters and control-path consolidation

Design and Replacement Considerations

Before replacement, compare logic capacity, usable I/O in the selected package, core and I/O rails, input tolerance, output drive, global clock/reset/output-enable resources, power-up state, JTAG or programmer pinout and every guaranteed timing parameter. Preserve the original project, fitter constraints and programming image. Blank programmable logic does not contain the customer function, and a JEDEC file built for a related density, package or voltage derivative must not be assumed compatible. Any migration requires recompilation, pin and timing review, programming verification and functional test on the target board.

Quality & Sourcing

For M4A3-32/32-7VNC48, Antrex Electronics can support stock and lead-time checks, full-suffix confirmation, package and date-code review, photographs, label inspection and shipment planning. Buyers should state the required quantity, acceptable date code, packaging form, target application and whether blank or pre-programmed parts are needed. For discontinued or long-stored programmable devices, appropriate controls can include traceability review, marking comparison, lead or ball-condition inspection, solderability evaluation and third-party electrical or X-ray testing when project risk warrants it. OEMs, EMS providers, repair centers and component buyers may submit BOM lists or hard-to-find programmable-logic requirements for sourcing support.