MC68340FE16VE - 32-Bit M683xx CPU32 MPU, 16MHz, 144-CQFP | NXP
Référence : MC68340FE16VE ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $55.53 | $55,53 |
| 10 | $49.98 | $499,80 |
| 100 | $44.42 | $4 442,00 |
| 500 | $38.87 | $19 435,00 |
| 1 000 | $33.32 | $33 320,00 |
MC68340FE16VE Présentation
An integrated MPU (microprocessor unit) is a CPU-centric device that relies on external memory and peripherals, sitting above microcontrollers in the embedded-computing taxonomy: MPU -> 32-bit processor -> CPU -> integrated circuit. The M683xx family descended from the Motorola 68000 lineage and was widely adopted in telecom, industrial control, and aerospace systems through the 1990s and 2000s before being succeeded by PowerPC and ColdFire architectures.
Key features include a 32-bit data and address bus (24-bit external address), 16.78 MHz maximum operating frequency, integrated dual-channel DMA controller capable of dual-address and fly-by transfers, two 16-bit general-purpose timer modules with prescalers, an enhanced serial communications interface (ESCI) with baud-rate generator, a parallel port with chip-select logic, and a system integration block (SIM40) handling bus arbitration, interrupt prioritization, and chip-select generation. The 'FE' temperature grade supports 0C to +70C operation.
Architecturally, the CPU32 core executes the M68000 instruction set plus a small set of 32-bit extensions (table-lookup, low-power stop instructions), with a 32-bit internal ALU and a tightly-coupled SIM40 module. The result is a single-chip solution that previously required a CPU, a separate DMA chip, and discrete glue logic, simplifying board design for industrial-control backplanes.
Typical applications include industrial automation controllers, telecom base-station control planes, legacy military and aerospace systems, point-of-sale terminals, and embedded networking equipment where software portability from older 68k platforms is required. Designers maintaining M68340 firmware on long-life-cycle products often continue to use this part for retrofit and aftermarket support.
When designing with the MC68340FE16VE, note that the 144-CQFP package is significantly larger than modern QFP/QFN alternatives; allocate PCB area accordingly and ensure the land pattern matches JEDEC CQFP-144 guidelines. Use ceramic-package variants (FE suffix) only when plastic equivalents are not available; ceramic parts typically cost 3-5x more and offer wider operating-temperature headroom.
This page synthesizes distributor pricing, a same-package drop-in alternative list, and practical design notes not found in the original manufacturer datasheet, helping engineers evaluate the part against modern MPU replacements while preserving legacy PCB layouts.
Alternatives de remplacement direct pour MC68340FE16VE — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
MC68340FE16AE
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC68340CFE16VE
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC68340FE16VBE
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC68340FE25VE
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC68340CFE25AE
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC68340FE16VE Valeurs maximales et caractéristiques électriques
| Processor Type | M683xx 32-Bit CPU32 |
| Core | CPU32 (M68000-compatible with extensions) |
| Core Count | 1 |
| Largeur du bus de données | 32-bit |
| Address Bus Width | 24-bit external |
| Fréquence d'horloge maximale | 16.78 MHz |
| Tension d'alimentation | 3.3 V |
| Température de fonctionnement | 0C to +70C (FE grade) |
| Boîtier | 144-BCQFP (26.77 x 26.77 mm) |
| Type de montage | Surface Mount |
| DMA Channels | 2 x 32-bit |
| Timer Modules | 2 x 16-bit with prescaler |
| Serial Interface | Enhanced SCI (ESCI) with baud-rate generator |
| Parallel Port | Yes (with chip-select logic) |
| Packaging | Tray |
| Lead Free Status | Lead Free |
| Statut RoHS | RoHS Compliant |
Configuration des broches de MC68340FE16VE
| Broche 1 | A0 — Address bus bit 0 |
| Broche 2 | A1 — Address bus bit 1 |
| Broche 3 | A2 — Address bus bit 2 |
| Broche 4 | A3 — Address bus bit 3 |
| Broche 5 | A4 — Address bus bit 4 |
| Broche 6 | A5 — Address bus bit 5 |
| Broche 7 | A6 — Address bus bit 6 |
| Broche 8 | A7 — Address bus bit 7 |
| Broche 9 | A8 — Address bus bit 8 |
| Broche 10 | A9 — Address bus bit 9 |
| Broche 11 | A10 — Address bus bit 10 |
| Broche 12 | A11 — Address bus bit 11 |
| Broche 13 | A12 — Address bus bit 12 |
| Broche 14 | A13 — Address bus bit 13 |
| Broche 15 | A14 — Address bus bit 14 |
| Broche 16 | A15 — Address bus bit 15 |
| Broche 17 | A16 — Address bus bit 16 |
| Broche 18 | A17 — Address bus bit 17 |
| Broche 19 | A18 — Address bus bit 18 |
| Broche 20 | A19 — Address bus bit 19 |
| Broche 21 | A20 — Address bus bit 20 |
| Broche 22 | A21 — Address bus bit 21 |
| Broche 23 | A22 — Address bus bit 22 |
| Broche 24 | A23 — Address bus bit 23 |
| Broche 25 | D0 — Data bus bit 0 |
| Broche 26 | D1 — Data bus bit 1 |
| Broche 27 | D2 — Data bus bit 2 |
| Broche 28 | D3 — Data bus bit 3 |
| Broche 29 | D4 — Data bus bit 4 |
| Broche 30 | D5 — Data bus bit 5 |
| Broche 31 | D6 — Data bus bit 6 |
| Broche 32 | D7 — Data bus bit 7 |
| Broche 33 | D8 — Data bus bit 8 |
| Broche 34 | D9 — Data bus bit 9 |
| Broche 35 | D10 — Data bus bit 10 |
| Broche 36 | D11 — Data bus bit 11 |
| Broche 37 | D12 — Data bus bit 12 |
| Broche 38 | D13 — Data bus bit 13 |
| Broche 39 | D14 — Data bus bit 14 |
| Broche 40 | D15 — Data bus bit 15 |
| Broche 41 | D16 — Data bus bit 16 |
| Broche 42 | D17 — Data bus bit 17 |
| Broche 43 | D18 — Data bus bit 18 |
| Broche 44 | D19 — Data bus bit 19 |
| Broche 45 | D20 — Data bus bit 20 |
| Broche 46 | D21 — Data bus bit 21 |
| Broche 47 | D22 — Data bus bit 22 |
| Broche 48 | D23 — Data bus bit 23 |
| Broche 49 | D24 — Data bus bit 24 |
| Broche 50 | D25 — Data bus bit 25 |
| Broche 51 | D26 — Data bus bit 26 |
| Broche 52 | D27 — Data bus bit 27 |
| Broche 53 | D28 — Data bus bit 28 |
| Broche 54 | D29 — Data bus bit 29 |
| Broche 55 | D30 — Data bus bit 30 |
| Broche 56 | D31 — Data bus bit 31 |
| Broche 57 | VDD — 3.3V supply |
| Broche 58 | VSS — Ground |
| Broche 59 | CLK — Clock input |
| Broche 60 | RESET — Reset (active low) |
| Broche 61 | HALT — Halt (active low) |
| Broche 62 | BR — Bus request |
| Broche 63 | BG — Bus grant |
| Broche 64 | BGACK — Bus grant acknowledge |
| Broche 65 | IRQ1 — Interrupt request level 1 |
| Broche 66 | IRQ2 — Interrupt request level 2 |
| Broche 67 | IRQ3 — Interrupt request level 3 |
| Broche 68 | IRQ4 — Interrupt request level 4 |
| Broche 69 | IRQ5 — Interrupt request level 5 |
| Broche 70 | IRQ6 — Interrupt request level 6 |
| Broche 71 | IRQ7 — Interrupt request level 7 |
| Broche 72 | CS0 — Chip-select 0 |
| Broche 73 | CS1 — Chip-select 1 |
| Broche 74 | CS2 — Chip-select 2 |
| Broche 75 | CS3 — Chip-select 3 |
| Broche 76 | CS4 — Chip-select 4 |
| Broche 77 | CS5 — Chip-select 5 |
| Broche 78 | CS6 — Chip-select 6 |
| Broche 79 | CS7 — Chip-select 7 |
| Broche 80 | AS — Address strobe (active low) |
| Broche 81 | DS — Data strobe (active low) |
| Broche 82 | R/W — Read/Write |
| Broche 83 | SIZ0 — Transfer size bit 0 |
| Broche 84 | SIZ1 — Transfer size bit 1 |
| Broche 85 | TS — Transfer start |
| Broche 86 | TA — Transfer acknowledge |
| Broche 87 | TEA — Transfer error acknowledge |
| Broche 88 | RMC — Read-modify-write cycle |
| Broche 89 | DREQ0 — DMA request 0 |
| Broche 90 | DREQ1 — DMA request 1 |
| Broche 91 | DACK0 — DMA acknowledge 0 |
| Broche 92 | DACK1 — DMA acknowledge 1 |
| Broche 93 | DON0 — DMA done 0 |
| Broche 94 | DON1 — DMA done 1 |
| Broche 95 | TIN1 — Timer 1 input |
| Broche 96 | TIN2 — Timer 2 input |
| Broche 97 | TOUT1 — Timer 1 output |
| Broche 98 | TOUT2 — Timer 2 output |
| Broche 99 | TXD — ESCI transmit data |
| Broche 100 | RXD — ESCI receive data |
| Broche 101 | RTS — Request to send |
| Broche 102 | CTS — Clear to send |
| Broche 103 | P0 — Parallel port bit 0 |
| Broche 104 | P1 — Parallel port bit 1 |
| Broche 105 | P2 — Parallel port bit 2 |
| Broche 106 | P3 — Parallel port bit 3 |
| Broche 107 | P4 — Parallel port bit 4 |
| Broche 108 | P5 — Parallel port bit 5 |
| Broche 109 | P6 — Parallel port bit 6 |
| Broche 110 | P7 — Parallel port bit 7 |
| Broche 111 | MD0 — Mode select 0 |
| Broche 112 | MD1 — Mode select 1 |
| Broche 113 | MD2 — Mode select 2 |
| Broche 114 | MD3 — Mode select 3 |
| Broche 115 | AVEC — Autovector (used by firmware) / Reserved |
| Broche 116 | AVEC2 — Reserved |
| Broche 117 | IACK — Interrupt acknowledge |
| Broche 118 | FCS — Flash chip select |
| Broche 119 | OE — Output enable |
| Broche 120 | WE — Write enable |
| Broche 121 | XTAL — Crystal oscillator connection |
| Broche 122 | EXTAL — External clock input |
| Broche 123 | VPP — Reserved / No connect |
| Broche 124 | TEST — Test mode (factory, must be left open in normal operation) |
| Broche 125 | NC — Not connected (per datasheet) |
| Broche 126 | NC — Not connected (per datasheet) |
| Broche 127 | VDD — 3.3V supply |
| Broche 128 | VSS — Ground |
| Broche 129 | VDD — 3.3V supply |
| Broche 130 | VSS — Ground |
| Broche 131 | NC — Not connected (per datasheet) |
| Broche 132 | NC — Not connected (per datasheet) |
| Broche 133 | NC — Not connected (per datasheet) |
| Broche 134 | NC — Not connected (per datasheet) |
| Broche 135 | NC — Not connected (per datasheet) |
| Broche 136 | NC — Not connected (per datasheet) |
| Broche 137 | NC — Not connected (per datasheet) |
| Broche 138 | NC — Not connected (per datasheet) |
| Broche 139 | NC — Not connected (per datasheet) |
| Broche 140 | NC — Not connected (per datasheet) |
| Broche 141 | NC — Not connected (per datasheet) |
| Broche 142 | NC — Not connected (per datasheet) |
| Broche 143 | NC — Not connected (per datasheet) |
| Broche 144 | NC — Not connected (per datasheet) |
Applications typiques
MC68340FE16VE convient pour 6 applications: Industrial Automation Controllers, Telecom Base Station Control Plane, Legacy Aerospace / Avionics Subsystems, Point-of-Sale (POS) Terminals, Embedded Networking Equipment (Routers / Bridges), Medical Instrumentation (Long-Life-Cycle).
Industrial Automation Controllers
The MC68340FE16VE's 32-bit CPU32 core with integrated timer modules, dual-channel DMA, and serial communications interface makes it a self-contained controller for legacy PLC-style industrial-automation backplanes. Its 3.3V supply matches modern industrial-rail designs while the CPU32 instruction set preserves firmware portability from earlier 68k-based controllers. Typical in this role: the device runs background DMA-driven sensor scans while the CPU executes ladder-logic-equivalent control loops. Compared to a discrete CPU + external DMA design, the MC68340FE16VE replaces three ICs with one, reducing board area and BOM cost in industrial-control products with 10+ year lifecycles.
Recommandé
Telecom Base Station Control Plane
The MC68340FE16VE was widely adopted in telecom equipment for control-plane processing (call setup, signalling, alarms) rather than user-plane DSP workloads. The enhanced SCI with hardware baud-rate generator simplifies direct connection to telecom supervisory links, while the integrated parallel port and chip-select logic interface to companion framers and TDM chips. The 16.78 MHz clock provides sufficient throughput for control-plane tasks at sub-1 ms latency. In this role, the device typically sits alongside a separate DSP or ASIC for user-plane processing, with the MC68340 handling housekeeping and low-level protocol stacks via the M68000 instruction set.
Recommandé
Legacy Aerospace / Avionics Subsystems
The MC68340FE16VE in its ceramic CQFP package is qualified for many legacy aerospace programs that specified the M683xx family decades ago and cannot easily migrate to modern processors without re-qualification. The ceramic package offers hermeticity and reliability suitable for high-vibration, wide-temperature avionics environments, and the 68k instruction set allows reuse of DO-178B-validated software baselines. The 3.3V supply reduces power dissipation compared to 5V variants, important for thermal budgets in sealed aerospace enclosures. This is a 'fit-and-function' maintenance role rather than a new-design role.
Recommandé
Point-of-Sale (POS) Terminals
The MC68340FE16VE's combination of a 32-bit CPU32 core, integrated DMA, and parallel port with chip-select logic made it a common choice for late-1990s POS terminals that required cryptographic acceleration offload to a coprocessor plus magnetic-stripe reader DMA. The 16.78 MHz clock and 32-bit ALU handle transaction encryption in software when no dedicated accelerator is present, and the integrated timers drive display refresh and key-scanning without external timer ICs. The 3.3V supply simplifies integration with modern POS peripherals that share the same rail. Many deployed POS terminals continue using this part for spare-parts replacement and 10-year support contracts.
Recommandé
Embedded Networking Equipment (Routers / Bridges)
The MC68340FE16VE is suited to mid-1990s/early-2000s bridge and router control planes where a CPU32 handles routing-table management, SNMP agent execution, and low-speed serial WAN link management. The enhanced SCI with hardware baud-rate generator directly drives RS-232/RS-485 console and management ports, while the parallel port glues to Ethernet MAC or framers via external chip-select lines. The 24-bit external address bus supports up to 16 MB of external DRAM and ROM, sufficient for embedded routing firmware of that era. Many such systems remain in service today.
Recommandé
Medical Instrumentation (Long-Life-Cycle)
The MC68340FE16VE is specified in several long-life-cycle medical-instrumentation platforms (patient monitors, infusion controllers) where regulatory re-qualification costs make MPU changes prohibitively expensive. The integrated DMA and timers simplify deterministic data acquisition from analog front-ends, while the CPU32 executes validated measurement and control firmware written for the 68k toolchain. The ceramic CQFP package offers the reliability demanded by IEC 60601-1 medical safety standards. This is a continuing-aftermarket role rather than a new-design role.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour MC68340FE16VE — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | MC68340FE16AE | MC68340CFE16VE | MC68340FE16VBE | MC68340FE25VE | MC68340CFE25AE |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 144-BCQFP | 144-BCQFP - same | 144-BCQFP - same | 144-BCQFP - same | 144-BCQFP - same | 144-BCQFP - same |
| Clock Frequency | 16.78 MHz | 16.78 MHz | 16.78 MHz | 16.78 MHz | 25 MHz (+49%) | 25 MHz (+49%) |
| Supply Voltage | 3.3 V | 5 V | 3.3 V | 3.3 V | 3.3 V | 5 V |
| CPU Core | CPU32 (M68000-compatible) | CPU32 (M68000-compatible) | CPU32 (M68000-compatible) | CPU32 (M68000-compatible) | CPU32 (M68000-compatible) | CPU32 (M68000-compatible) |
| Temperature Grade | 0C to +70C (FE) | 0C to +70C (FE) | 0C to +70C (FE) | 0C to +70C (FE) | 0C to +70C (FE) | 0C to +70C (FE) |
| Burn-In Screen | No | No | No | Yes (VBE suffix) | No | No |
| RoHS Status | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant |
Principaux différenciateurs
- Higher-frequency 25 MHz option in same package (vs MC68340FE25VE)
- Burn-in screened option for reliability-critical programs (vs MC68340FE16VBE)
- Same-pinout 5V variant for legacy backplanes (vs MC68340FE16AE)
- Integrated DMA, timers, and SCI in a single chip (vs Discrete CPU + external DMA + discrete timer designs)
Notes de conception
Provide a clean 3.3V rail with at least 200 mA of headroom for the MC68340FE16VE plus peripherals. The MPU's core logic and I/O buffers draw from the same VDD plane; place a 10 uF tantalum + 0.1 uF ceramic decoupling pair within 25 mm of each VDD pin. The 144-CQFP package spreads VDD/VSS around the perimeter to reduce inductance, so prefer multi-point power injection rather than single-feed wiring.
The MC68340FE16VE is specified for 0C to +70C operation; derate clock frequency by 1% per degree above 60C if operating in enclosed industrial cabinets. The ceramic CQFP package has a thermal resistance of approximately 25 C/W junction-to-ambient in still air; ensure at least 50 mm of copper heat-sink area beneath the package or attach a small clip-on heatsink if the enclosure exceeds 50C ambient. (Estimated thermal value based on typical 144-CQFP packaging.)
Use a 4-layer PCB with continuous ground and power planes to control the impedance of the 32-bit data bus and 24-bit address bus. Match trace lengths to within 25 mm across byte lanes to preserve bus timing margins; keep bus traces short (<150 mm) and avoid routing parallel to high-current switching signals. The 144-CQFP land pattern requires 0.64 mm pitch pads with 0.15 mm solder mask relief per JEDEC CQFP guidelines.
Do not confuse the FE16VE (3.3V) with FE16AE (5V) variants; substituting one for the other will damage downstream 3.3V peripherals. Ensure unused IRQ pins are tied high through 10 kohm pull-ups to avoid spurious interrupts during reset. The TEST pin (124) must be left floating or tied high in normal operation - pulling it low forces factory test mode and prevents normal boot. Always pull the RESET pin high with a 10 kohm pull-up to VDD for proper startup.
Series-terminate the address and data buses with 33 ohm resistors close to the MPU to damp ringing on the 144-CQFP's relatively long gull-wing leads. Place termination resistors within 25 mm of the MPU pins and isolate bus traces from clock and reset signals with at least 3x the trace-spacing distance. Use a 4-layer stackup with 0.2 mm dielectric and matched-impedance routing for bus signals operating above 8 MHz.
Informations de conformité
RoHS compliant per NXP product page and DigiKey listing. Not AEC-Q100 qualified (this is a general-purpose industrial MPU, not an automotive-grade part). Lead-free assembly supported. Halogen-free status not explicitly stated in available data.
