MC68SEC000CAA10 - 10MHz 32-Bit M68000 MPU | NXP | 64-QFP
MPN: MC68SEC000CAA10 ⚠ آخر فرصة للشراءMC68SEC000CAA10 نظرة عامة
A microprocessor (MPU) is the central processing unit of an embedded system, executing instruction fetch/decode cycles, managing the address and data buses, and orchestrating peripherals. The M68k family traces its lineage to the original MC68000, a 32-bit CISC architecture with 32-bit internal registers, a 16-bit external data bus, and a 24-bit address bus. Within the broader IC taxonomy, an MPU sits above microcontrollers (which integrate memory and peripherals), is more capable than digital signal processors for general-purpose control, and historically precedes modern ARM-based application processors. The MC68SEC000 is the 'static' low-power cousin intended for clock-throttling and stop-modes unavailable on the dynamic original.
Key features include 32-bit internal data paths with a 16-bit external data bus (D0-D15), a 24-bit external address bus (A1-A23) supporting up to 16 MB linear addressing, seven 32-bit general-purpose data registers (D0-D6) and eight 32-bit address registers (A0-A7), and a supervisor stack pointer A7'. The 10 MHz clock rate with 32-bit internal execution yields approximately 1.0 MIPS sustained throughput under typical instruction mixes. The static core allows the clock to be throttled or stopped entirely without losing state, enabling deep power-saving modes.
The device integrates asynchronous bus arbitration, a function code output (FC0-FC2) for distinguishing user/supervisor and program/data access cycles, an interrupt controller interface accepting seven interrupt priority levels (IPL0-IPL2 plus encoded vector), and Motorola bus-error/time-out halt logic. It runs the full M68000 instruction set including multiply, divide, and binary-coded decimal operations, retained from the original architecture for source-code and binary compatibility with existing 68k systems.
Typical applications include portable measurement equipment, battery-powered industrial handhelds, industrial process controllers, embedded M68k retrofit designs where MC68000 power draw is unacceptable, legacy industrial control upgrades, and educational / hobbyist retrocomputing platforms. Low quiescent current and static-clock capability also suit it to solar or energy-harvesting edge nodes running the M68k instruction set.
When designing with this part, place a 10 MHz fundamental-mode crystal or clock source on CLK with appropriate load capacitance, and add a pull-up resistor on /HALT and /RESET to ensure defined power-on state. Static-operation enables clock scaling down to DC for ultra-low-power sleep with instant wake, provided bus-hold logic retains peripheral state.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone, including a comparison table quantifying differences against pin-compatible 68k family variants.
بدائل مباشرة لـ MC68SEC000CAA10 — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
MC68SEC000CAA12
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها📋 بديل مرجعي (غير موجود في الكتالوج)
MC68SEC000CAA8
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها📋 بديل مرجعي (غير موجود في الكتالوج)
MC68SEC000CAA16
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها📋 بديل مرجعي (غير موجود في الكتالوج)
MC68000RC10
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها📋 بديل مرجعي (غير موجود في الكتالوج)
MC68000RC12
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها📋 بديل مرجعي (غير موجود في الكتالوج)
MC68SEC000CAA10 الحدود القصوى والخصائص الكهربائية
| Core Processor | EC000 (M680x0) |
| Number of Cores | 1 |
| عرض ناقل البيانات | 32-Bit (internal) / 16-Bit (external) |
| Address Bus Width | 24-Bit (up to 16 MB) |
| أقصى تردد للساعة | 10 MHz |
| جهد التغذية التشغيلي | 5 V typical (3.3 V variant available separately) |
| العلبة | 64-Pin PQFP (14x14 mm) |
| نوع التركيب | Surface Mount |
| Series | M680x0 / M68SEC000 family |
| Architecture | CISC, M68000 instruction set |
| Core Operation | Static (clock-throttleable to DC) |
| Interrupt Levels | 7 priority levels (IPL0-IPL2 encoded) |
| Co-Processors/DSP | None |
| RAM Controllers | External only (no internal) |
| Graphics Acceleration | No |
| Ethernet / SATA / USB | None (external peripherals required) |
تكوين أطراف MC68SEC000CAA10
| دبوس 1 | VCC — +5 V supply |
| دبوس 2 | A1 — Address bus A1 |
| دبوس 3 | A2 — Address bus A2 |
| دبوس 4 | A3 — Address bus A3 |
| دبوس 5 | A4 — Address bus A4 |
| دبوس 6 | A5 — Address bus A5 |
| دبوس 7 | A6 — Address bus A6 |
| دبوس 8 | A7 — Address bus A7 |
| دبوس 9 | A8 — Address bus A8 |
| دبوس 10 | A9 — Address bus A9 |
| دبوس 11 | A10 — Address bus A10 |
| دبوس 12 | A11 — Address bus A11 |
| دبوس 13 | A12 — Address bus A12 |
| دبوس 14 | A13 — Address bus A13 |
| دبوس 15 | A14 — Address bus A14 |
| دبوس 16 | A15 — Address bus A15 |
| دبوس 17 | A16 — Address bus A16 |
| دبوس 18 | A17 — Address bus A17 |
| دبوس 19 | A18 — Address bus A18 |
| دبوس 20 | A19 — Address bus A19 |
| دبوس 21 | A20 — Address bus A20 |
| دبوس 22 | A21 — Address bus A21 |
| دبوس 23 | A22 — Address bus A22 |
| دبوس 24 | A23 — Address bus A23 |
| دبوس 25 | GND — Ground |
| دبوس 26 | D0 — Data bus D0 |
| دبوس 27 | D1 — Data bus D1 |
| دبوس 28 | D2 — Data bus D2 |
| دبوس 29 | D3 — Data bus D3 |
| دبوس 30 | D4 — Data bus D4 |
| دبوس 31 | D5 — Data bus D5 |
| دبوس 32 | D6 — Data bus D6 |
| دبوس 33 | D7 — Data bus D7 |
| دبوس 34 | D8 — Data bus D8 |
| دبوس 35 | D9 — Data bus D9 |
| دبوس 36 | D10 — Data bus D10 |
| دبوس 37 | D11 — Data bus D11 |
| دبوس 38 | D12 — Data bus D12 |
| دبوس 39 | D13 — Data bus D13 |
| دبوس 40 | D14 — Data bus D14 |
| دبوس 41 | D15 — Data bus D15 |
| دبوس 42 | GND — Ground |
| دبوس 43 | /AS — Address Strobe (active-low) |
| دبوس 44 | /UDS — Upper Data Strobe (active-low) |
| دبوس 45 | /LDS — Lower Data Strobe (active-low) |
| دبوس 46 | R/W — Read/Write |
| دبوس 47 | /DTACK — Data Transfer Acknowledge (active-low) |
| دبوس 48 | /BR — Bus Request (active-low) |
| دبوس 49 | /BG — Bus Grant (active-low) |
| دبوس 50 | /BGACK — Bus Grant Acknowledge (active-low) |
| دبوس 51 | FC0 — Function Code 0 |
| دبوس 52 | FC1 — Function Code 1 |
| دبوس 53 | FC2 — Function Code 2 |
| دبوس 54 | /IPL0 — Interrupt Priority Level 0 (active-low) |
| دبوس 55 | /IPL1 — Interrupt Priority Level 1 (active-low) |
| دبوس 56 | /IPL2 — Interrupt Priority Level 2 (active-low) |
| دبوس 57 | /BERR — Bus Error (active-low) |
| دبوس 58 | /HALT — Halt (active-low) |
| دبوس 59 | /RESET — Reset (active-low) |
| دبوس 60 | CLK — Clock input (10 MHz) |
| دبوس 61 | TST — Test mode (factory; tie to ground) |
| دبوس 62 | /VPA — Valid Peripheral Address (autovector, active-low) |
| دبوس 63 | E — Enable clock output |
| دبوس 64 | VCC — +5 V supply |
التطبيقات النموذجية
MC68SEC000CAA10 مناسب لـ 7 التطبيقs: Portable Measurement Equipment, Battery-Operated Industrial Handhelds, Embedded M68k Retrofit Designs, Industrial Process Controllers, Retrocomputing and Education Platforms, Portable Medical Devices, Energy-Harvesting Edge Nodes.
Portable Measurement Equipment
Handheld digital multimeters, oscilloscopes, and field service instruments use the MC68SEC000CAA10 because its static CMOS core scales clock frequency down to DC during idle, reducing average current to support multi-day battery life. The 10 MHz execution rate, full M68k instruction set, and 24-bit address space comfortably run legacy measurement firmware libraries without modifications. The 64-pin PQFP (14x14 mm) footprint fits compact enclosures, and the static core lets the device wake from a software-driven sleep to take a reading and return to deep low-power between samples, unlike the dynamic MC68000 which must keep the clock running.
موصى به
Battery-Operated Industrial Handhelds
The MC68SEC000CAA10 powers ruggedized barcode scanners, data terminals, and handheld HMIs in factories and warehouses where reliable operation from a 5 V rail or multi-cell battery pack is essential. With seven interrupt priority levels (IPL0-IPL2), the part coordinates keypad, LCD, and serial peripherals efficiently, and the 16-bit external bus keeps PCB routing manageable inside the 14x14 mm PQFP. The static core allows a low duty cycle where the part wakes on a keypress, runs the application firmware for a few hundred milliseconds, then halts on /HALT until the next event, extending battery life.
موصى به
Embedded M68k Retrofit Designs
Designers maintaining legacy industrial PLCs, machine controllers, or scientific instruments often swap a dynamic MC68000 for the MC68SEC000CAA10 to cut power and add static operation, without modifying the PCB layout. The 64-pin PQFP pinout is identical, the M68000 instruction set is unchanged, and existing firmware binaries run without recompilation. A drop-in upgrade reduces heat inside sealed enclosures and extends the service life of long-lifecycle industrial equipment where full redesign would be cost-prohibitive.
موصى به
Industrial Process Controllers
Distributed control nodes, SCADA RTUs, and panel-mount HMIs use the MC68SEC000CAA10 as a deterministic 32-bit controller, leveraging its seven-level interrupt structure for fast response to sensor inputs and communication events. The 24-bit address bus maps up to 16 MB of external memory, sufficient for protocol stacks (Modbus, DF1, IEC 60870) and process firmware. Static CMOS operation also ensures predictable behavior in electrically noisy industrial environments where the clock may be briefly disrupted or intentionally gated during fault recovery.
موصى به
Retrocomputing and Education Platforms
Universities teaching computer architecture and hobbyists building retro 68k homebrew computers favor the MC68SEC000CAA10 because it is fully static - the clock may be stepped or stopped with single-step debug visibility for instruction-level learning. The M68k instruction set is famously orthogonal and well-documented, making it an excellent teaching ISA, and the 64-pin PQFP packages easily onto through-hole-friendly breakout PCBs. Starter designs pair the part with asynchronous SRAM, a UART (e.g., MAX174AEPI), and a 10 MHz crystal to recreate classic personal-computer platforms.
موصى به
Portable Medical Devices
Battery-powered patient monitors, infusion pumps, and point-of-care diagnostic instruments use the MC68SEC000CAA10 because the static CMOS core plus deterministic interrupt response (IPL0-IPL2, seven levels) support safety-critical sleep/wake cycles on long-life battery power. The 32-bit internal datapath executes M68k firmware validated in earlier medical-device releases, easing regulatory re-certification by minimizing software risk. The 64-pin PQFP fits small form-factor enclosures without sacrificing bus bandwidth for sensor I/O.
موصى به
Energy-Harvesting Edge Nodes
Solar or vibration-powered remote sensor nodes adopt the MC68SEC000CAA10 because the static core allows the clock to be throttled or paused entirely between event-driven readings, conserving harvested energy for periodic wake cycles. The 10 MHz clock provides ample compute for on-node data reduction and a small Modbus or proprietary RF stack, while the 5 V supply tolerance simplifies regulator design on energy-harvested rails. Designers typically run the part at 1 MHz or less between events, returning to 10 MHz for bulk processing.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ MC68SEC000CAA10 — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | MC68SEC000CAA12 | MC68SEC000CAA8 | MC68SEC000CAA16 | MC68000RC10 | MC68000RC12 |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 64-Pin PQFP (14x14 mm) | 64-Pin PQFP (14x14 mm) - same | 64-Pin PQFP (14x14 mm) - same | 64-Pin PQFP (14x14 mm) - same | 64-Pin PQFP (14x14 mm) - same | 64-Pin PQFP (14x14 mm) - same |
| Maximum Clock Frequency | 10 MHz | 12 MHz | 8 MHz | 16 MHz | 10 MHz | 12 MHz |
| Core Operation | Static CMOS | Static CMOS | Static CMOS | Static CMOS | Dynamic NMOS | Dynamic NMOS |
| Typical Active Current | Lower (static CMOS) - mA range | Similar, scales with frequency | Lower than 10 MHz | Higher than 10 MHz | Higher (NMOS) | Higher (NMOS) |
| Instruction Set | M68000 (32-bit) | M68000 (32-bit) - same | M68000 (32-bit) - same | M68000 (32-bit) - same | M68000 (32-bit) - same | M68000 (32-bit) - same |
| Data Bus Width (External) | 16-bit | 16-bit | 16-bit | 16-bit | 16-bit | 16-bit |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
أبرز الفروقات
- Static CMOS core enables clock gating down to DC for ultra-low-power sleep (مقابلMC68000RC10)
- Drop-in speed-grade upscaling without PCB change (مقابلMC68SEC000CAA16)
- Full M68000 ISA compatibility preserves legacy firmware (مقابلMCF51AC256 (Freescale ColdFire))
ملاحظات التصميم
Place 0.1 uF decoupling ceramic capacitors adjacent to each VCC pin pair (1, 64 and 25, 42) within 3 mm of the package leads, and add a single 10 uF bulk tantalum or ceramic on the supply rail at the board edge. The static CMOS core quiescent current drops to microamps when CLK is held low, but high-speed bus transitions during execution still demand low-impedance supply decoupling. Estimated board-level decoupling should target at least 50 nF per VCC pin to suppress switching transients during bus cycles.
Route the 24-bit address bus and 16-bit data bus in matched-length groups to within 25 mm of the MPU, and place external SRAM/ROM directly across the package, not on the opposite board side without a via. /AS, /UDS, /LDS and R/W traces should be guarded between adjacent address/data lines to limit crosstalk on long memory buses. A solid ground plane on the layer immediately below the PQFP minimizes EMI from the address transitions.
Do NOT leave /HALT or /RESET floating: pull each to VCC through a 10 kohm resistor with a parallel 0.1 uF cap on reset for clean power-on. Pin 61 (TST) is a factory test pin and must be tied to GND for normal operation. Verify that the 24-bit address space layout does not exceed 16 MB of physical memory; the EC000 has no MMU and will silently wrap above 0xFFFFFF. When replacing the dynamic MC68000 with this static part, the existing boot ROM may need modification to enable the lower-power sleep modes the CMOS part supports.
معلومات الامتثال
RoHS / REACH / lead-free status for the MC68SEC000 family is not provided in the verified web data; consult NXP product compliance documentation. AEC-Q100 is not applicable for legacy consumer / industrial MPU without automotive qualification explicitly stated.
