MC68306AG16B - 16MHz Integrated EC000 MPU | NXP | 144-LQFP
MPN: MC68306AG16B ✗ Akhir HayatMC68306AG16B Ringkasan
A microprocessor (MPU) is the central processing unit of an embedded computing system, typically paired with external memory and peripherals via an external bus. The 68000/68EC000 family sits in the hierarchy of 32-bit CISC microprocessors -> M68000 family -> Motorola/Freescale/NXP M683xx integrated processors -> embedded industrial control. The MC68306 specifically integrates the 68EC000 core with common system peripherals, eliminating the need for external bus arbitration, interrupt controllers, and chip-select logic that discrete 68000 designs require.
Key features include 16 MHz CPU clock, 32-bit internal data path with 16-bit external data bus (EC000 core), 24-bit address bus, integrated peripherals (timers, serial, parallel I/O, interrupt controller, chip-select logic), and a wide 5V operating supply. The 144-LQFP package provides ample I/O for the integrated peripheral set while remaining hand-solderable for prototypes.
Architecturally, the MC68306 separates the CPU core from the peripheral bus, allowing peripheral operations to occur in parallel with CPU execution. The 68EC000 core uses a simplified 16-bit external data path versus the full MC68000's 32-bit path, reducing bus complexity while preserving the 32-bit internal register set.
Typical applications include industrial process control, point-of-sale terminals, medical instrumentation, building automation controllers, automotive body electronics, and legacy equipment maintenance. The integrated peripherals make it suitable for designs where board space, BOM count, and reliability are priorities.
When designing, ensure the 5V supply rail is clean and decoupled with 0.1uF and 10uF capacitors near each power pin. The EC000's 16-bit external bus requires careful PCB trace length matching (within 1 inch) for memory accesses above 8 MHz to prevent bus errors.
This page synthesizes distributor pricing, drop-in alternatives, lifecycle status, and practical design notes from the NXP product brief, complementing the official datasheet with actionable engineering context.
Pilihan pengganti yang segera untuk MC68306AG16B — sama paket, pin-pin kompatibel. Bahagian paket yang berbeza memerlukan kerja ulang PCB diasingkan.
MC68306AG20B
✅ Masuk Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif rujukan (tidak dalam katalog)
MC68306AG10B
✅ Masuk Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif rujukan (tidak dalam katalog)
MC68306AG16B Penilaian maksimum & Ciri-ciri Elektrik
| Processor Type | M683xx 32-Bit Integrated Processor |
| Core | 68EC000 |
| CPU Architecture | 32-bit internal, 16-bit external data bus |
| Operating Frequency | 16 MHz |
| Tegangan Pemberi Arus | 5 V |
| Address Bus Width | 24-bit |
| External Data Bus Width | 16-bit |
| Kemasan / Case | 144-LQFP (20x20) |
| Packaging | Tray |
| Jenis Pemasangan | Surface Mount |
| Lead Free Status | Lead Free |
| Status RoHS | RoHS Compliant |
| Number of Cores | 1 |
| Integrated Peripherals | Timers, serial, parallel I/O, interrupt controller, chip-select logic |
| Instruction Set | M68000 (CISC) |
Panduan Konfigurasi Pin MC68306AG16B 144-lqfp (20x20)
Konfigurasi pin untuk MC68306AG16B (144-lqfp (20x20) pakai). IC digital ini termasuk GPIO, antaramuka komunikasi (UART, SPI, I2C), dan pin kuasa. Rujuk dokumen pengeluar untuk fungsi pin alternatif dan opsi konfigurasi. Biasa digunakan dalam rancangan sistem ter嵌入式 dan PCB.
Tiada data garisan pin yang diperoleh untuk MC68306AG16B.
Rujuk kepada lembaran data untuk konfigurasi pin penuh.
Aplikasi Biasa
MC68306AG16B patut untuk 6 aplikasis: Industrial Process Control, Point-of-Sale Terminals, Medical Instrumentation, Building Automation Controllers, Automotive Body Electronics, Legacy Equipment Maintenance & Repair.
Industrial Process Control
The MC68306AG16B integrates a 68EC000 core plus timers, chip-select logic and parallel I/O on a single die, which directly reduces the BOM on a process-control PLC board versus a discrete 68EC000 design. Its 16 MHz clock at 5V provides deterministic M68000-family execution suitable for ladder-logic style control loops with millisecond response times. The 24-bit address bus supports up to 16 MB of code + data memory, ample for control firmware plus data logging. Designers place the MC68306AG16B at the heart of the backplane with external SRAM/EPROM on the local bus.
Disebarkan
Point-of-Sale Terminals
POS terminals need a 32-bit processor with strong I/O flexibility - exactly what the MC68306AG16B provides via its integrated parallel and serial ports, timers for keypad/display scanning, and chip-select logic for memory-mapped LCD/keypad controllers. The 16 MHz speed is more than adequate for transaction processing and printer control typical of legacy POS designs. Its 5V operation simplifies power design in retail environments where 5V rails are common. The 144-LQFP package with 20x20 mm footprint fits compact terminal mainboards.
Disebarkan
Medical Instrumentation
Medical instruments require deterministic 32-bit processing, predictable interrupt latency, and long product lifecycles - characteristics where the MC68306AG16B and the broader M683xx family have a track record. The 68EC000 core is well-understood by medical firmware teams maintaining legacy equipment, and the integrated peripherals reduce board complexity versus discrete 68000 designs. The 144-LQFP package allows easy rework for field service. Design with a 5V linear regulator for low-noise analog front-end compatibility.
Disebarkan
Building Automation Controllers
Building automation systems (HVAC, lighting, access control) favor 32-bit processors with abundant I/O and low BOM cost. The MC68306AG16B packs the CPU, timers, serial, parallel I/O and chip-select logic into one 144-LQFP device, allowing a single chip to handle sensor polling, actuator signaling, and inter-controller communication. Its 16 MHz 68EC000 throughput comfortably schedules hundreds of I/O points per second. Its 5V supply simplifies compatibility with industrial 24V-to-5V power designs commonly found in building automation panels.
Disebarkan
Automotive Body Electronics
Automotive body modules (door, seat, lighting controllers) historically used 68EC000-class processors before the widespread shift to 32-bit microcontrollers. The MC68306AG16B's integrated timers and chip-select logic suit body-electronics workloads; the 144-LQFP package provides sufficient I/O for multi-channel actuator control. Note that the MC68306AG16B is not AEC-Q100 qualified; automotive designs requiring AEC-Q100 should consider newer NXP S32K or KEAZ parts. This part suits legacy automotive board rebuilds rather than new designs.
Disebarkan
Legacy Equipment Maintenance & Repair
Many industrial and medical devices shipped in the 1990s and 2000s used MC68306AG16B-class processors. Repair depots, field service organizations, and aftermarket manufacturers need form/fit/function replacements. The MC68306AG16B itself, sourced from authorized distributors and aftermarket partners like Rochester Electronics, restores legacy equipment without firmware changes. The same 144-LQFP package footprint allows direct replacement on existing PCBs without board rework, preserving long equipment lifecycles.
Disebarkan
Ringkasan Produk Disebarkan
Data referensi kejuruteraan untuk MC68306AG16B — perbandingan, panduan rancangan, dan maklumat kesediaan
Panduan Pilihan
Perbandingan dengan Gantian
| Parametr | Produk Ini | MC68306AG20B |
|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors |
| Package | 144-LQFP (20x20) | 144-LQFP (20x20) - same |
| Operating Frequency | 16 MHz | 20 MHz (+25%) |
| Supply Voltage | 5 V | 5 V - same |
| Processor Core | 68EC000 | 68EC000 - same |
| Address Bus Width | 24-bit | 24-bit - same |
| External Data Bus Width | 16-bit | 16-bit - same |
| Integrated Peripherals | Timers, serial, parallel I/O, CS logic | Same peripheral set |
| Lifecycle Status | NRND | NRND |
| RoHS | Compliant | Compliant |
Penyeberangsung Jelas
- Drop-in 25% faster variant available in same package (vsMC68306AG20B)
- Broader 68000 ecosystem support than newer ColdFire (vsNXP ColdFire MCF5208)
Catatan Desain
The MC68306AG16B requires a clean 5V supply regulated within +/-5%. Place a 10-47 uF bulk electrolytic plus 0.1 uF ceramic decoupling capacitors near each VDD and VSS pin pair of the 144-LQFP to suppress switching transients. Avoid routing the 5V plane under high-dV/dt traces such as the external bus clock to prevent supply corruption. The integrated peripherals draw additional current beyond the 68EC000 core, so worst-case supply sizing should follow the NXP product brief power dissipation estimate (value not extracted - [DATA_NEEDED: power dissipation]).
For external bus operation at 16 MHz, match the address/data bus trace lengths within 1 inch and use a 50 ohm controlled-impedance stackup to prevent bus errors. Place external SRAM/EPROM on the same layer as the MC68306AG16B to minimize vias on the high-speed bus. The 144-LQFP package has a center thermal pad on some Freescale/NXP M683xx variants - check the package outline for exposed die-attach paddle requirements. Use a 4-layer PCB with dedicated ground and power planes for EMI control on industrial control boards.
Do not substitute generic 68EC000 designs for the MC68306AG16B without verifying peripheral register mapping - the integrated peripherals have a specific memory-mapped register set per the MC68306 product brief. When migrating existing M68000 firmware, ensure the 16-bit external data path is handled consistently in all bus cycles to avoid misaligned-access traps. Verify chip-select timing against the speed-grade datasheet to avoid glitches in the address-decoded peripherals.
Maklumat Kesediaan
RoHS compliant per Rochester Electronics / DigiKey listings. Lead-free per verified web data. AEC-Q100 not stated in public documentation.
