MC68340FE16VE - 32-Bit M683xx CPU32 MPU, 16MHz, 144-CQFP | NXP
MPN： MC68340FE16VE ✗ 停產MC68340FE16VE 概覽
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.
直接替換替代品，適用於 MC68340FE16VE — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
MC68340FE16AE
✅ 直接替換📋 參考替代品（不在目錄中）
MC68340CFE16VE
✅ 直接替換📋 參考替代品（不在目錄中）
MC68340FE16VBE
✅ 直接替換📋 參考替代品（不在目錄中）
MC68340FE25VE
✅ 直接替換📋 參考替代品（不在目錄中）
MC68340CFE25AE
✅ 直接替換📋 參考替代品（不在目錄中）
MC68340FE16VE 最大額定值與電氣特性
| Processor Type | M683xx 32-Bit CPU32 |
| Core | CPU32 (M68000-compatible with extensions) |
| Core Count | 1 |
| 資料匯流排寬度 | 32-bit |
| Address Bus Width | 24-bit external |
| 最大時脈頻率 | 16.78 MHz |
| 供應電壓 | 3.3 V |
| 工作溫度 | 0C to +70C (FE grade) |
| 封裝 | 144-BCQFP (26.77 x 26.77 mm) |
| 安裝類型 | 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 |
| RoHS 狀態 | RoHS Compliant |
MC68340FE16VE 腳位配置
| 腳位 1 | A0 — Address bus bit 0 |
| 腳位 2 | A1 — Address bus bit 1 |
| 腳位 3 | A2 — Address bus bit 2 |
| 腳位 4 | A3 — Address bus bit 3 |
| 腳位 5 | A4 — Address bus bit 4 |
| 腳位 6 | A5 — Address bus bit 5 |
| 腳位 7 | A6 — Address bus bit 6 |
| 腳位 8 | A7 — Address bus bit 7 |
| 腳位 9 | A8 — Address bus bit 8 |
| 腳位 10 | A9 — Address bus bit 9 |
| 腳位 11 | A10 — Address bus bit 10 |
| 腳位 12 | A11 — Address bus bit 11 |
| 腳位 13 | A12 — Address bus bit 12 |
| 腳位 14 | A13 — Address bus bit 13 |
| 腳位 15 | A14 — Address bus bit 14 |
| 腳位 16 | A15 — Address bus bit 15 |
| 腳位 17 | A16 — Address bus bit 16 |
| 腳位 18 | A17 — Address bus bit 17 |
| 腳位 19 | A18 — Address bus bit 18 |
| 腳位 20 | A19 — Address bus bit 19 |
| 腳位 21 | A20 — Address bus bit 20 |
| 腳位 22 | A21 — Address bus bit 21 |
| 腳位 23 | A22 — Address bus bit 22 |
| 腳位 24 | A23 — Address bus bit 23 |
| 腳位 25 | D0 — Data bus bit 0 |
| 腳位 26 | D1 — Data bus bit 1 |
| 腳位 27 | D2 — Data bus bit 2 |
| 腳位 28 | D3 — Data bus bit 3 |
| 腳位 29 | D4 — Data bus bit 4 |
| 腳位 30 | D5 — Data bus bit 5 |
| 腳位 31 | D6 — Data bus bit 6 |
| 腳位 32 | D7 — Data bus bit 7 |
| 腳位 33 | D8 — Data bus bit 8 |
| 腳位 34 | D9 — Data bus bit 9 |
| 腳位 35 | D10 — Data bus bit 10 |
| 腳位 36 | D11 — Data bus bit 11 |
| 腳位 37 | D12 — Data bus bit 12 |
| 腳位 38 | D13 — Data bus bit 13 |
| 腳位 39 | D14 — Data bus bit 14 |
| 腳位 40 | D15 — Data bus bit 15 |
| 腳位 41 | D16 — Data bus bit 16 |
| 腳位 42 | D17 — Data bus bit 17 |
| 腳位 43 | D18 — Data bus bit 18 |
| 腳位 44 | D19 — Data bus bit 19 |
| 腳位 45 | D20 — Data bus bit 20 |
| 腳位 46 | D21 — Data bus bit 21 |
| 腳位 47 | D22 — Data bus bit 22 |
| 腳位 48 | D23 — Data bus bit 23 |
| 腳位 49 | D24 — Data bus bit 24 |
| 腳位 50 | D25 — Data bus bit 25 |
| 腳位 51 | D26 — Data bus bit 26 |
| 腳位 52 | D27 — Data bus bit 27 |
| 腳位 53 | D28 — Data bus bit 28 |
| 腳位 54 | D29 — Data bus bit 29 |
| 腳位 55 | D30 — Data bus bit 30 |
| 腳位 56 | D31 — Data bus bit 31 |
| 腳位 57 | VDD — 3.3V supply |
| 腳位 58 | VSS — Ground |
| 腳位 59 | CLK — Clock input |
| 腳位 60 | RESET — Reset (active low) |
| 腳位 61 | HALT — Halt (active low) |
| 腳位 62 | BR — Bus request |
| 腳位 63 | BG — Bus grant |
| 腳位 64 | BGACK — Bus grant acknowledge |
| 腳位 65 | IRQ1 — Interrupt request level 1 |
| 腳位 66 | IRQ2 — Interrupt request level 2 |
| 腳位 67 | IRQ3 — Interrupt request level 3 |
| 腳位 68 | IRQ4 — Interrupt request level 4 |
| 腳位 69 | IRQ5 — Interrupt request level 5 |
| 腳位 70 | IRQ6 — Interrupt request level 6 |
| 腳位 71 | IRQ7 — Interrupt request level 7 |
| 腳位 72 | CS0 — Chip-select 0 |
| 腳位 73 | CS1 — Chip-select 1 |
| 腳位 74 | CS2 — Chip-select 2 |
| 腳位 75 | CS3 — Chip-select 3 |
| 腳位 76 | CS4 — Chip-select 4 |
| 腳位 77 | CS5 — Chip-select 5 |
| 腳位 78 | CS6 — Chip-select 6 |
| 腳位 79 | CS7 — Chip-select 7 |
| 腳位 80 | AS — Address strobe (active low) |
| 腳位 81 | DS — Data strobe (active low) |
| 腳位 82 | R/W — Read/Write |
| 腳位 83 | SIZ0 — Transfer size bit 0 |
| 腳位 84 | SIZ1 — Transfer size bit 1 |
| 腳位 85 | TS — Transfer start |
| 腳位 86 | TA — Transfer acknowledge |
| 腳位 87 | TEA — Transfer error acknowledge |
| 腳位 88 | RMC — Read-modify-write cycle |
| 腳位 89 | DREQ0 — DMA request 0 |
| 腳位 90 | DREQ1 — DMA request 1 |
| 腳位 91 | DACK0 — DMA acknowledge 0 |
| 腳位 92 | DACK1 — DMA acknowledge 1 |
| 腳位 93 | DON0 — DMA done 0 |
| 腳位 94 | DON1 — DMA done 1 |
| 腳位 95 | TIN1 — Timer 1 input |
| 腳位 96 | TIN2 — Timer 2 input |
| 腳位 97 | TOUT1 — Timer 1 output |
| 腳位 98 | TOUT2 — Timer 2 output |
| 腳位 99 | TXD — ESCI transmit data |
| 腳位 100 | RXD — ESCI receive data |
| 腳位 101 | RTS — Request to send |
| 腳位 102 | CTS — Clear to send |
| 腳位 103 | P0 — Parallel port bit 0 |
| 腳位 104 | P1 — Parallel port bit 1 |
| 腳位 105 | P2 — Parallel port bit 2 |
| 腳位 106 | P3 — Parallel port bit 3 |
| 腳位 107 | P4 — Parallel port bit 4 |
| 腳位 108 | P5 — Parallel port bit 5 |
| 腳位 109 | P6 — Parallel port bit 6 |
| 腳位 110 | P7 — Parallel port bit 7 |
| 腳位 111 | MD0 — Mode select 0 |
| 腳位 112 | MD1 — Mode select 1 |
| 腳位 113 | MD2 — Mode select 2 |
| 腳位 114 | MD3 — Mode select 3 |
| 腳位 115 | AVEC — Autovector (used by firmware) / Reserved |
| 腳位 116 | AVEC2 — Reserved |
| 腳位 117 | IACK — Interrupt acknowledge |
| 腳位 118 | FCS — Flash chip select |
| 腳位 119 | OE — Output enable |
| 腳位 120 | WE — Write enable |
| 腳位 121 | XTAL — Crystal oscillator connection |
| 腳位 122 | EXTAL — External clock input |
| 腳位 123 | VPP — Reserved / No connect |
| 腳位 124 | TEST — Test mode (factory, must be left open in normal operation) |
| 腳位 125 | NC — Not connected (per datasheet) |
| 腳位 126 | NC — Not connected (per datasheet) |
| 腳位 127 | VDD — 3.3V supply |
| 腳位 128 | VSS — Ground |
| 腳位 129 | VDD — 3.3V supply |
| 腳位 130 | VSS — Ground |
| 腳位 131 | NC — Not connected (per datasheet) |
| 腳位 132 | NC — Not connected (per datasheet) |
| 腳位 133 | NC — Not connected (per datasheet) |
| 腳位 134 | NC — Not connected (per datasheet) |
| 腳位 135 | NC — Not connected (per datasheet) |
| 腳位 136 | NC — Not connected (per datasheet) |
| 腳位 137 | NC — Not connected (per datasheet) |
| 腳位 138 | NC — Not connected (per datasheet) |
| 腳位 139 | NC — Not connected (per datasheet) |
| 腳位 140 | NC — Not connected (per datasheet) |
| 腳位 141 | NC — Not connected (per datasheet) |
| 腳位 142 | NC — Not connected (per datasheet) |
| 腳位 143 | NC — Not connected (per datasheet) |
| 腳位 144 | NC — Not connected (per datasheet) |
典型應用
MC68340FE16VE 適用於 6 應用s: 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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
推薦產品摘要
工程參考資料，適用於 MC68340FE16VE — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | 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 |
主要差異化特點
- Higher-frequency 25 MHz option in same package (對比MC68340FE25VE)
- Burn-in screened option for reliability-critical programs (對比MC68340FE16VBE)
- Same-pinout 5V variant for legacy backplanes (對比MC68340FE16AE)
- Integrated DMA, timers, and SCI in a single chip (對比Discrete CPU + external DMA + discrete timer designs)
設計說明
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.
合規資訊
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.
