MC68340FE16VE - 32-Bit M683xx CPU32 MPU, 16MHz, 144-CQFP | NXP
MPN: MC68340FE16VE ✗ סוף ייצורMC68340FE16VE סקירה
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.
חלופות תחליף ישיר עבור MC68340FE16VE — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
MC68340FE16AE
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
MC68340CFE16VE
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
MC68340FE16VBE
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
MC68340FE25VE
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
MC68340CFE25AE
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
MC68340FE16VE דירוגים מרביים ומאפיינים חשמליים
| Processor Type | M683xx 32-Bit CPU32 |
| Core | CPU32 (M68000-compatible with extensions) |
| Core Count | 1 |
| רוחב אפיק נתונים | 32-bit |
| Address Bus Width | 24-bit external |
| תדר שעון מקסימלי | 16.78 MHz |
| מתח אספקה | 3.3 V |
| טמפרטורת פעולה | 0C to +70C (FE grade) |
| מארז | 144-BCQFP (26.77 x 26.77 mm) |
| סוג הרכבה | 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 |
| סטטוס RoHS | RoHS Compliant |
תצורת פינים של MC68340FE16VE
| פין 1 | A0 — Address bus bit 0 |
| פין 2 | A1 — Address bus bit 1 |
| פין 3 | A2 — Address bus bit 2 |
| פין 4 | A3 — Address bus bit 3 |
| פין 5 | A4 — Address bus bit 4 |
| פין 6 | A5 — Address bus bit 5 |
| פין 7 | A6 — Address bus bit 6 |
| פין 8 | A7 — Address bus bit 7 |
| פין 9 | A8 — Address bus bit 8 |
| פין 10 | A9 — Address bus bit 9 |
| פין 11 | A10 — Address bus bit 10 |
| פין 12 | A11 — Address bus bit 11 |
| פין 13 | A12 — Address bus bit 12 |
| פין 14 | A13 — Address bus bit 13 |
| פין 15 | A14 — Address bus bit 14 |
| פין 16 | A15 — Address bus bit 15 |
| פין 17 | A16 — Address bus bit 16 |
| פין 18 | A17 — Address bus bit 17 |
| פין 19 | A18 — Address bus bit 18 |
| פין 20 | A19 — Address bus bit 19 |
| פין 21 | A20 — Address bus bit 20 |
| פין 22 | A21 — Address bus bit 21 |
| פין 23 | A22 — Address bus bit 22 |
| פין 24 | A23 — Address bus bit 23 |
| פין 25 | D0 — Data bus bit 0 |
| פין 26 | D1 — Data bus bit 1 |
| פין 27 | D2 — Data bus bit 2 |
| פין 28 | D3 — Data bus bit 3 |
| פין 29 | D4 — Data bus bit 4 |
| פין 30 | D5 — Data bus bit 5 |
| פין 31 | D6 — Data bus bit 6 |
| פין 32 | D7 — Data bus bit 7 |
| פין 33 | D8 — Data bus bit 8 |
| פין 34 | D9 — Data bus bit 9 |
| פין 35 | D10 — Data bus bit 10 |
| פין 36 | D11 — Data bus bit 11 |
| פין 37 | D12 — Data bus bit 12 |
| פין 38 | D13 — Data bus bit 13 |
| פין 39 | D14 — Data bus bit 14 |
| פין 40 | D15 — Data bus bit 15 |
| פין 41 | D16 — Data bus bit 16 |
| פין 42 | D17 — Data bus bit 17 |
| פין 43 | D18 — Data bus bit 18 |
| פין 44 | D19 — Data bus bit 19 |
| פין 45 | D20 — Data bus bit 20 |
| פין 46 | D21 — Data bus bit 21 |
| פין 47 | D22 — Data bus bit 22 |
| פין 48 | D23 — Data bus bit 23 |
| פין 49 | D24 — Data bus bit 24 |
| פין 50 | D25 — Data bus bit 25 |
| פין 51 | D26 — Data bus bit 26 |
| פין 52 | D27 — Data bus bit 27 |
| פין 53 | D28 — Data bus bit 28 |
| פין 54 | D29 — Data bus bit 29 |
| פין 55 | D30 — Data bus bit 30 |
| פין 56 | D31 — Data bus bit 31 |
| פין 57 | VDD — 3.3V supply |
| פין 58 | VSS — Ground |
| פין 59 | CLK — Clock input |
| פין 60 | RESET — Reset (active low) |
| פין 61 | HALT — Halt (active low) |
| פין 62 | BR — Bus request |
| פין 63 | BG — Bus grant |
| פין 64 | BGACK — Bus grant acknowledge |
| פין 65 | IRQ1 — Interrupt request level 1 |
| פין 66 | IRQ2 — Interrupt request level 2 |
| פין 67 | IRQ3 — Interrupt request level 3 |
| פין 68 | IRQ4 — Interrupt request level 4 |
| פין 69 | IRQ5 — Interrupt request level 5 |
| פין 70 | IRQ6 — Interrupt request level 6 |
| פין 71 | IRQ7 — Interrupt request level 7 |
| פין 72 | CS0 — Chip-select 0 |
| פין 73 | CS1 — Chip-select 1 |
| פין 74 | CS2 — Chip-select 2 |
| פין 75 | CS3 — Chip-select 3 |
| פין 76 | CS4 — Chip-select 4 |
| פין 77 | CS5 — Chip-select 5 |
| פין 78 | CS6 — Chip-select 6 |
| פין 79 | CS7 — Chip-select 7 |
| פין 80 | AS — Address strobe (active low) |
| פין 81 | DS — Data strobe (active low) |
| פין 82 | R/W — Read/Write |
| פין 83 | SIZ0 — Transfer size bit 0 |
| פין 84 | SIZ1 — Transfer size bit 1 |
| פין 85 | TS — Transfer start |
| פין 86 | TA — Transfer acknowledge |
| פין 87 | TEA — Transfer error acknowledge |
| פין 88 | RMC — Read-modify-write cycle |
| פין 89 | DREQ0 — DMA request 0 |
| פין 90 | DREQ1 — DMA request 1 |
| פין 91 | DACK0 — DMA acknowledge 0 |
| פין 92 | DACK1 — DMA acknowledge 1 |
| פין 93 | DON0 — DMA done 0 |
| פין 94 | DON1 — DMA done 1 |
| פין 95 | TIN1 — Timer 1 input |
| פין 96 | TIN2 — Timer 2 input |
| פין 97 | TOUT1 — Timer 1 output |
| פין 98 | TOUT2 — Timer 2 output |
| פין 99 | TXD — ESCI transmit data |
| פין 100 | RXD — ESCI receive data |
| פין 101 | RTS — Request to send |
| פין 102 | CTS — Clear to send |
| פין 103 | P0 — Parallel port bit 0 |
| פין 104 | P1 — Parallel port bit 1 |
| פין 105 | P2 — Parallel port bit 2 |
| פין 106 | P3 — Parallel port bit 3 |
| פין 107 | P4 — Parallel port bit 4 |
| פין 108 | P5 — Parallel port bit 5 |
| פין 109 | P6 — Parallel port bit 6 |
| פין 110 | P7 — Parallel port bit 7 |
| פין 111 | MD0 — Mode select 0 |
| פין 112 | MD1 — Mode select 1 |
| פין 113 | MD2 — Mode select 2 |
| פין 114 | MD3 — Mode select 3 |
| פין 115 | AVEC — Autovector (used by firmware) / Reserved |
| פין 116 | AVEC2 — Reserved |
| פין 117 | IACK — Interrupt acknowledge |
| פין 118 | FCS — Flash chip select |
| פין 119 | OE — Output enable |
| פין 120 | WE — Write enable |
| פין 121 | XTAL — Crystal oscillator connection |
| פין 122 | EXTAL — External clock input |
| פין 123 | VPP — Reserved / No connect |
| פין 124 | TEST — Test mode (factory, must be left open in normal operation) |
| פין 125 | NC — Not connected (per datasheet) |
| פין 126 | NC — Not connected (per datasheet) |
| פין 127 | VDD — 3.3V supply |
| פין 128 | VSS — Ground |
| פין 129 | VDD — 3.3V supply |
| פין 130 | VSS — Ground |
| פין 131 | NC — Not connected (per datasheet) |
| פין 132 | NC — Not connected (per datasheet) |
| פין 133 | NC — Not connected (per datasheet) |
| פין 134 | NC — Not connected (per datasheet) |
| פין 135 | NC — Not connected (per datasheet) |
| פין 136 | NC — Not connected (per datasheet) |
| פין 137 | NC — Not connected (per datasheet) |
| פין 138 | NC — Not connected (per datasheet) |
| פין 139 | NC — Not connected (per datasheet) |
| פין 140 | NC — Not connected (per datasheet) |
| פין 141 | NC — Not connected (per datasheet) |
| פין 142 | NC — Not connected (per datasheet) |
| פין 143 | NC — Not connected (per datasheet) |
| פין 144 | NC — Not connected (per datasheet) |
יישומים טיפוסיים
MC68340FE16VE מתאים עבור 6 יישוםs: 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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור MC68340FE16VE — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | 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 |
מבדילים עיקריים
- Higher-frequency 25 MHz option in same package (לעומתMC68340FE25VE)
- Burn-in screened option for reliability-critical programs (לעומתMC68340FE16VBE)
- Same-pinout 5V variant for legacy backplanes (לעומתMC68340FE16AE)
- Integrated DMA, timers, and SCI in a single chip (לעומתDiscrete CPU + external DMA + discrete timer designs)
הערות תכנון
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.
מידע על תאימות
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.
