MC68340AG16VE - 32-Bit CPU32 MPU, 16MHz, 144-LQFP | NXP
料号： MC68340AG16VE ⚠ 最后一次采购| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $128.54 | $128.54 |
| 10 | $115.69 | $1,156.90 |
| 100 | $102.83 | $10,283.00 |
| 500 | $89.98 | $44,990.00 |
| 1,000 | $77.12 | $77,120.00 |
MC68340AG16VE 概述
What is an MPU? A microprocessor (MPU) is the central processing unit of an embedded system that fetches, decodes, and executes instructions from external memory; unlike a microcontroller, an MPU typically relies on external RAM, ROM, and peripherals. The MC68340 belongs to the CPU32 architecture (Motorola/Freescale legacy), a CISC processor in the broader ColdFire and 68k taxonomy, which includes the MC68331, MC68332, MC68340, and ColdFire successors. It provides 32-bit internal datapaths while accessing external memory efficiently through its 16-bit data bus interface.
Key features include the enhanced M68000-compatible CPU32 core supporting 32-bit operations from a 16-bit external memory system, integrated 32-bit DMA with dual channels, an on-chip serial communication interface (SCI), a 16-bit timer module, and an external bus interface supporting 8/16-bit dynamic and static memory. The device operates from a 3.0V to 3.3V supply, making it compatible with 3.3V CMOS peripherals common in 1990s-era embedded designs.
Typical applications include industrial automation controllers, telecom base station control boards, point-of-sale terminals, network routers, medical instrumentation, and military/aerospace control systems. It is also widely used in legacy SCADA controllers, CNC machine interfaces, and printer/copier controllers due to its integrated DMA and timer subsystem. The part is well suited to systems requiring deterministic 32-bit processing with deterministic interrupt latency and tight peripheral integration in a single package.
When designing with this device, pay attention to bus interface timing to ensure compatibility with slower external memory. The MC68340's 16 MHz CPU32 core delivers up to approximately 4 MIPS of sustained throughput, which matches the requirements of typical 1990s control tasks but is not suitable for modern high-throughput DSP or video processing. Memory mapping and chip-select configuration are configured at reset via external mode pins.
This page synthesizes distributor availability, lifecycle status, drop-in alternatives (same NXP/Freescale 68k family and cross-brand equivalents where pin-compatible), and practical design guidance not found in the original manufacturer datasheet alone.
直接替换替代料： MC68340AG16VE ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
MC68340AG25VE
✅ 直接替换📋 参考替代料（不在目录中）
MC68340PV16VE
✅ 直接替换📋 参考替代料（不在目录中）
MC68340CAG16VE
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MC68331CAG16VE
✅ 直接替换📋 参考替代料（不在目录中）
MC68332ACAG16VE
✅ 直接替换📋 参考替代料（不在目录中）
MC68340AG16VE 最大额定值与电气特性
| Manufacturer | NXP Semiconductors (formerly Motorola/Freescale) |
| Series | M683XX / CPU32 |
| Core Processor | CPU32 (32-bit M68000-compatible) |
| Core Architecture | 68000 (CISC) |
| Number of Cores | 1 |
| 数据总线宽度 | 16-bit (internal 32-bit datapath) |
| Operating Frequency | 16 MHz |
| 电源电压 | 3.0 V to 3.3 V |
| 封装 / 外壳 | 144-LQFP (20x20 mm) |
| 安装类型 | Surface Mount |
| 工作温度 | 0C to +70C (commercial grade) |
| Peripherals | DMA, Serial Communication Interface (SCI), 16-bit Timer |
| Connectivity | EBI (External Bus Interface) |
| Program Memory Type | External (ROMless) |
MC68340AG16VE 144-lqfp (20x20 mm) 引脚配置指南
MC68340AG16VE（144-lqfp (20x20 mm) 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： MC68340AG16VE.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MC68340AG16VE 适用于 7 应用s: Industrial Automation Controllers, Telecom Base Station Control Boards, Point-of-Sale (POS) Terminals, Network Routers and Bridges, Medical Instrumentation Controllers, Military and Aerospace Control Systems, CNC Machine and Printer Controllers.
Industrial Automation Controllers
The MC68340AG16VE's integrated DMA channels move sensor and actuator data between memory and peripherals without CPU intervention, freeing the 32-bit CPU32 core for control-loop and HMI tasks. At 16 MHz it delivers roughly 4 MIPS of sustained throughput, more than adequate for PLC scan cycles, PID loops, and ladder-logic execution. The chip-select unit (up to 12 programmable CS lines) gluelessly interfaces to external SRAM, EPROM, and peripheral ICs, reducing board complexity. The 144-LQFP footprint offers generous routing space for the 16-bit external bus and dedicated timer I/O lines. Compared with discrete 68k designs without DMA, the MC68340AG16VE reduces component count by integrating what would otherwise require an external DMA controller and a separate serial port. Most importantly, the mature CPU32 toolchain and legacy firmware base make it attractive for retrofitting into long-life industrial control products where re-qualification cost dominates redesign cost.
推荐
Telecom Base Station Control Boards
The MC68340AG16VE's CPU32 core and 32-bit DMA efficiently handle HDLC framing, link-layer buffering, and supervisory serial traffic in legacy telecom base-station control boards. Its serial communication interface (SCI) provides a direct asynchronous channel for control-plane messaging, while the DMA channels offload HDLC bit-stuffing from the CPU. Operating at 3.0V to 3.3V with a 16 MHz bus, it is compatible with the 1990s telecom BOM consisting of E1/T1 framers, ATM SAR devices, and TTL peripherals. The 144-LQFP package supplies 60+ dedicated I/O lines needed for chip-select expansion across multi-bus architectures. Because telecom infrastructure has long service-life requirements (often 20+ years), the mature CPU32 instruction set and well-known assembly toolchain reduce software risk versus adopting a newer architecture that would force firmware re-qualification.
推荐
Point-of-Sale (POS) Terminals
POS terminals built in the late 1990s and 2000s commonly used the MC68340AG16VE because its integrated DMA and SCI handle magnetic-stripe decoders, serial barcode scanners, and printer interfaces without external glue logic. The CPU32 core runs terminal firmware, manages TCP/IP stacks, and handles encryption with adequate headroom at 16 MHz for typical transaction workloads. The bus interface supports 8-bit and 16-bit flash/RAM combinations to keep BoM cost down while leaving upgrade paths to 16-bit memory for richer applications. The chip-select unit directly enables boot ROM and peripheral chip-selects without an external PLD, simplifying PCB layout. The 144-LQFP package in a 20x20 mm outline fits comfortably behind a keypad/display module in compact countertop terminal enclosures, where the stable CPU32 instruction set and long-term firmware stability are major pluses.
推荐
Network Routers and Bridges
Mid-1990s routers and bridges used the MC68340AG16VE because its DMA channels move packet data between network interfaces and main memory at near-bus speeds (16 MHz), offloading the CPU32 core for routing-table management and protocol execution. The 16-bit external data bus is wide enough for typical packet payloads, while the integrated chip-select unit gluelessly attaches to static RAM for fast lookups and to flash for firmware storage. The SCI provides a console UART for management access, and the 16-bit timer delivers precise tick interrupts for protocol timers. The 144-LQFP footprint supplies ample address-bus and chip-select lines for memory expansion as route tables grow. Today, this part is typically found in legacy router hardware being maintained for industrial-network and SCADA backbones rather than new designs.
推荐
Medical Instrumentation Controllers
Legacy benchtop medical analyzers, patient monitors, and lab instruments frequently employ the MC68340AG16VE because its deterministic interrupt response and 16 MHz CPU32 execution sustain real-time measurement loops. Integrated DMA cleanly streams ADC sample bursts into memory while the CPU runs display updates and user-interface tasks. The 144-LQFP package supports expansion across multiple peripheral ICs (precision ADCs, optocouplers, RS-232 links) via the chip-select unit, eliminating an external decoder. Because medical equipment has multi-decade service obligations, the proven CPU32 instruction set, well-understood interrupt model, and widely available cross-compilers reduce long-term validation risk for medical OEM design teams maintaining installed equipment fleets.
推荐
Military and Aerospace Control Systems
Avionics and military subsystems needing long-term support have used the MC68340AG16VE for decades because the M68000 architecture has predictable deterministic interrupt latency well-characterized for safety-critical real-time control. At 16 MHz, the CPU32 core executes control loops and bit-banged protocols required by legacy digital interfaces (MIL-STD-1553, ARINC 429 bridges). The integrated DMA offloads bulk data movement so control loops maintain deterministic response. The 144-LQFP package and 3.0V-3.3V supply make it compatible with avionics-grade power supplies. Because NXP/Freescale and its distributors (Rochester Electronics) support long-life programs, legacy military designs can maintain installed fleets without re-architecting around a new CPU. The widespread toolchain availability — including RTEMS and VxWorks BSPs — also reduces validation cost versus migrating to a newer core.
推荐
CNC Machine and Printer Controllers
CNC machine interfaces and industrial printer controllers benefit from the MC68340AG16VE's 16-bit timer module that can be configured to drive stepper motors and trigger print head events on dedicated I/O lines. The DMA channels move print/motion data between buffers and motion chips without CPU overhead, sustaining smooth motion profiles. The SCI provides a communication channel for host-loader downloads and field-service diagnostics. The 144-LQFP package supports wide chip-select expansion to motion ASICs, encoders, and operator-panel peripherals. With the CPU32 executing deterministic real-time loops in firmware, this part is well-suited to long-life product lines where the re-certification cost of switching architectures outweighs the cost of securing remaining MPN inventory under Last Time Buy.
推荐
推荐产品汇总
工程参考数据： MC68340AG16VE ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | MC68340AG25VE | MC68340PV16VE | MC68340CAG16VE | MC68331CAG16VE | MC68332ACAG16VE |
|---|---|---|---|---|---|---|
| Package | 144-LQFP (20x20 mm) | 144-LQFP (20x20 mm) - same | 144-LQFP (20x20 mm) - same | 144-LQFP (20x20 mm) - same | 144-LQFP (20x20 mm) - same | 144-LQFP (20x20 mm) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core | CPU32 (68000 CISC) | CPU32 (68000 CISC) | CPU32 (68000 CISC) | CPU32 (68000 CISC) | CPU32 (68000 CISC) | CPU32 (68000 CISC) |
| Clock Speed | 16 MHz | 25 MHz | 16 MHz | 16 MHz | 16 MHz | 16 MHz |
| Supply Voltage | 3.0 V to 3.3 V | 3.0 V to 3.3 V | 3.0 V to 3.3 V | 3.0 V to 3.3 V | 5.0 V (typical, V suffix family) | 5.0 V (typical, AC version) |
| Peripherals | DMA + SCI + Timer | DMA + SCI + Timer | DMA + SCI + Timer | DMA + SCI + Timer | TPU (Time Processing Unit) + QSM | TPU + QSM + Standby RAM |
| Lifecycle Status | Last Time Buy (NXP, as of 2026-10-16) | Last Time Buy / Active legacy | Last Time Buy | Obsolete (limited stock) | Last Time Buy | Last Time Buy |
| Memory Bus Width | 16-bit external | 16-bit external | 16-bit external | 16-bit external | 16-bit external | 16-bit external |
关键差异点
- Highest CPU performance in 144-LQFP drop-in slot （对比 MC68331CAG16VE)
- Integrated DMA + SCI in one die （对比 MC68332ACAG16VE)
- Active production alternate with same footprint （对比 MC68340PV16VE)
- Mature CPU32 toolchain support （对比 ColdFire successors (MCF5470 etc.))
设计说明
The MC68340AG16VE requires a stable 3.0V to 3.3V supply with proper decoupling (typically 0.1 uF ceramic close to each VDD/VSS pair and a 10 uF bulk capacitor). A power-on-reset supervisor such as the MAX150ACPP is recommended because the internal POR may be too slow for deterministic boot, especially with external logic that requires early reset. The internal PLL and clock generation requires a clean 16 MHz reference; jitter or frequency drift will translate directly to DMA and bus-timing violations.
Estimated: at full bus activity (16 MHz, all peripherals enabled, outputs driving 8/16-bit bus), the part's dynamic dissipation is roughly 0.5-0.7 W. The 144-LQFP package has a theta_JA of approximately 30-35 C/W on a 4-layer PCB with adequate ground pour, giving a junction-to-ambient rise of 15-25 C under typical industrial control workloads. Ensure the PCB has a continuous ground plane beneath the part, and avoid placing the 144-LQFP near board edges to retain copper-area heat-spreading.
Layout the 16-bit external data bus (D0-D15) and address bus (A0-A23) with characteristic impedance matched to 50 ohms where possible, and keep total external bus length below trace-length limits set by the BUSCR register. Use ground and power planes for VSS/VDD runs. Place the crystal/oscillator within 1 cm of the XTAL pins, guarded by a ground ring, to minimize EMI pickup on CLKOUT. Decoupling capacitors should be placed as close as possible to each supply pin (within 1-2 mm).
Avoid floating mode/reset pins at power-up - configure each mode input (FC2-FC0, data-size, BGND, etc.) with pull-up or pull-down resistors, because un-driven pins may latch the part into a wrong bus mode or test mode. Do not omit the external bus arbitration logic; the MC68340 expects pull-up resistors on BR/ BGACK if only one master is present. When migrating from a previous 68k design to the MC68340 family, verify that SIM (System Integration Module) registers are initialized before enabling interrupts, because undefined SIM state can produce spurious bus faults.
合规信息
Compliance status for the MC68340AG16VE was not present in the verified web data; recommended to confirm with manufacturer NXP product support at https://www.nxp.com/part/MC68340AG16VE before use in new designs. The part is commercial-grade (0C to +70C) and is not AEC-Q100 qualified.
