MC68340AB25E-FR - 25MHz 32-Bit MPU with DMA | NXP QFP-144
料号： MC68340AB25E-FR ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $245.3 | $245.30 |
| 10 | $220.77 | $2,207.70 |
| 100 | $196.24 | $19,624.00 |
| 500 | $171.71 | $85,855.00 |
| 1,000 | $147.18 | $147,180.00 |
MC68340AB25E-FR 概述
An MPU (Microprocessor Unit) is a CPU-centric integrated circuit that requires external program and data memory to operate, distinguishing it from a microcontroller that integrates memory on-chip. The MC68340 belongs to the M68000 (68K) CISC processor family, a long-established architecture used in industrial control, telecom, and aerospace embedded systems where deterministic interrupt handling and rich peripheral integration are valued. Within the broader taxonomy it sits as: MPU -> microprocessor -> processor -> digital IC -> semiconductor.
Key features include the CPU32 core (32-bit internal registers, 16-bit external data bus), two independent 32-bit DMA channels capable of memory-to-memory and peripheral transfers, dual serial communications interfaces (SCI), two 16-bit timer modules, an 8-bit parallel I/O port, and a system integration module providing chip-select generation and bus arbitration. The 'AB' speed grade denotes the 25 MHz / 4.8 MIPS performance tier, while 'E' indicates the extended temperature range and 'FR' denotes the tape-and-reel packaging suffix.
The architecture pairs a CISC instruction set with simple hardware-friendly peripherals, allowing legacy 68K codebases to be ported with minimal software rework. The dual-channel DMA offloads bulk data movement from the CPU, freeing cycles for application logic. The system integration module generates up to 12 chip-select signals from a single oscillator, eliminating external glue logic in many designs.
Typical applications include industrial automation controllers, telecommunications line cards, point-of-sale terminals, embedded networking gateways, and legacy M68000 system upgrades. The wide temperature range and robust peripheral set also suit railway, aerospace, and military embedded systems.
When designing with this device, allocate the 16-bit external data bus carefully - the CPU32 has 32-bit internal registers but expects a 16-bit memory interface for cost-sensitive designs. Ensure the system integration module's chip-select timing matches the slowest peripheral, and provide a hardware watchdog or external supervisor for safety-critical applications.
This page synthesizes distributor pricing, drop-in alternatives from the same M68340 family, comparison data versus related 68K parts, and practical design notes not assembled in a single datasheet view.
直接替换替代料： MC68340AB25E-FR ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： MC68340AB25E-FR （相同外形与封装尺寸） ——差异在于 Chip-Select Outputs, Core Architecture, DMA Channels, Mounting Type, Package.
快速对比工具——选择替代料号进行并排对比：
MC68340AB16E
✅ 直接替换📋 参考替代料（不在目录中）
MC68340CFC25E
✅ 直接替换📋 参考替代料（不在目录中）
MC68340FE25E
✅ 直接替换✓ 有现货
$55.8 / 个
查看数据手册 →MC68340AB25E-FR 最大额定值与电气特性
| Core Architecture | CPU32 (M68000-family, 32-bit internal / 16-bit external) |
| 最大时钟频率 | 25 MHz |
| Performance | 4.8 MIPS |
| External Data Bus Width | 16-bit |
| DMA Channels | 2 x 32-bit DMA |
| Serial Communication Interfaces (SCI) | 2 |
| Timer Modules | 2 x 16-bit TIM |
| Parallel I/O | 8-bit port |
| Chip-Select Outputs | Up to 12 (from System Integration Module) |
| 封装 | 144-pin QFP (FR suffix denotes T&R) |
| 电源电压 | 5 V |
| 工作温度范围 | -40C to +85C (extended, 'E' suffix) |
| 安装类型 | Surface Mount |
| Processor Series | M683xx |
| Instruction Set | CISC (M68000-family) |
| Internal Registers | 32-bit |
| Family Position | High-performance MPU with on-chip DMA and peripherals |
MC68340AB25E-FR 引脚配置
| 引脚 1 | A0 — Address bus bit 0 |
| 引脚 2 | A1 — Address bus bit 1 |
| 引脚 3 | A2 — Address bus bit 2 |
| 引脚 4 | A3 — Address bus bit 3 |
| 引脚 5 | A4 — Address bus bit 4 |
| 引脚 6 | A5 — Address bus bit 5 |
| 引脚 7 | A6 — Address bus bit 6 |
| 引脚 8 | A7 — Address bus bit 7 |
| 引脚 9 | A8 — Address bus bit 8 |
| 引脚 10 | A9 — Address bus bit 9 |
| 引脚 11 | A10 — Address bus bit 10 |
| 引脚 12 | A11 — Address bus bit 11 |
| 引脚 13 | A12 — Address bus bit 12 |
| 引脚 14 | A13 — Address bus bit 13 |
| 引脚 15 | A14 — Address bus bit 14 |
| 引脚 16 | A15 — Address bus bit 15 |
| 引脚 17 | A16 — Address bus bit 16 |
| 引脚 18 | A17 — Address bus bit 17 |
| 引脚 19 | A18 — Address bus bit 18 |
| 引脚 20 | A19 — Address bus bit 19 |
| 引脚 21 | A20 — Address bus bit 20 |
| 引脚 22 | A21 — Address bus bit 21 |
| 引脚 23 | A22 — Address bus bit 22 |
| 引脚 24 | A23 — Address bus bit 23 |
| 引脚 25 | D0 — Data bus bit 0 |
| 引脚 26 | D1 — Data bus bit 1 |
| 引脚 27 | D2 — Data bus bit 2 |
| 引脚 28 | D3 — Data bus bit 3 |
| 引脚 29 | D4 — Data bus bit 4 |
| 引脚 30 | D5 — Data bus bit 5 |
| 引脚 31 | D6 — Data bus bit 6 |
| 引脚 32 | D7 — Data bus bit 7 |
| 引脚 33 | D8 — Data bus bit 8 |
| 引脚 34 | D9 — Data bus bit 9 |
| 引脚 35 | D10 — Data bus bit 10 |
| 引脚 36 | D11 — Data bus bit 11 |
| 引脚 37 | D12 — Data bus bit 12 |
| 引脚 38 | D13 — Data bus bit 13 |
| 引脚 39 | D14 — Data bus bit 14 |
| 引脚 40 | D15 — Data bus bit 15 |
| 引脚 41 | VCC — +5V power supply |
| 引脚 42 | GND — Ground |
| 引脚 43 | CLKIN — Clock input |
| 引脚 44 | RESET — Reset (active low) |
| 引脚 45 | HALT — Halt (active low) |
| 引脚 46 | BR — Bus request |
| 引脚 47 | BG — Bus grant |
| 引脚 48 | BGACK — Bus grant acknowledge |
| 引脚 49 | IPL0 — Interrupt priority level 0 |
| 引脚 50 | IPL1 — Interrupt priority level 1 |
| 引脚 51 | IPL2 — Interrupt priority level 2 |
| 引脚 52 | FC0 — Function code bit 0 |
| 引脚 53 | FC1 — Function code bit 1 |
| 引脚 54 | FC2 — Function code bit 2 |
| 引脚 55 | R/W — Read/Write control |
| 引脚 56 | AS — Address strobe (active low) |
| 引脚 57 | DS — Data strobe (active low) |
| 引脚 58 | CS0 — Chip-select 0 (from SIM) |
| 引脚 59 | CS1 — Chip-select 1 (from SIM) |
| 引脚 60 | CS2 — Chip-select 2 (from SIM) |
| 引脚 61 | CS3 — Chip-select 3 (from SIM) |
| 引脚 62 | CS4 — Chip-select 4 (from SIM) |
| 引脚 63 | CS5 — Chip-select 5 (from SIM) |
| 引脚 64 | CS6 — Chip-select 6 (from SIM) |
| 引脚 65 | CS7 — Chip-select 7 (from SIM) |
| 引脚 66 | CS8 — Chip-select 8 (from SIM) |
| 引脚 67 | CS9 — Chip-select 9 (from SIM) |
| 引脚 68 | CS10 — Chip-select 10 (from SIM) |
| 引脚 69 | CS11 — Chip-select 11 (from SIM) |
| 引脚 70 | AVEC — Autovector (active low) |
| 引脚 71 | BERR — Bus error (active low) |
| 引脚 72 | DTACK — Data transfer acknowledge (active low) |
| 引脚 73 | VCC — +5V power supply |
| 引脚 74 | GND — Ground |
| 引脚 75 | DREQ0 — DMA request channel 0 |
| 引脚 76 | DREQ1 — DMA request channel 1 |
| 引脚 77 | DACK0 — DMA acknowledge channel 0 (active low) |
| 引脚 78 | DACK1 — DMA acknowledge channel 1 (active low) |
| 引脚 79 | DONEO — DMA done channel 0 |
| 引脚 80 | DONE1 — DMA done channel 1 |
| 引脚 81 | TXD0 — SCI 0 transmit data |
| 引脚 82 | RXD0 — SCI 0 receive data |
| 引脚 83 | TXD1 — SCI 1 transmit data |
| 引脚 84 | RXD1 — SCI 1 receive data |
| 引脚 85 | TIN0 — Timer 0 input |
| 引脚 86 | TIN1 — Timer 1 input |
| 引脚 87 | TOUT0 — Timer 0 output |
| 引脚 88 | TOUT1 — Timer 1 output |
| 引脚 89 | P0 — Parallel I/O port bit 0 |
| 引脚 90 | P1 — Parallel I/O port bit 1 |
| 引脚 91 | P2 — Parallel I/O port bit 2 |
| 引脚 92 | P3 — Parallel I/O port bit 3 |
| 引脚 93 | P4 — Parallel I/O port bit 4 |
| 引脚 94 | P5 — Parallel I/O port bit 5 |
| 引脚 95 | P6 — Parallel I/O port bit 6 |
| 引脚 96 | P7 — Parallel I/O port bit 7 |
| 引脚 97 | VCC — +5V power supply |
| 引脚 98 | GND — Ground |
| 引脚 99 | EXTAL — External clock / crystal oscillator input |
| 引脚 100 | XTAL — Crystal oscillator output |
| 引脚 101 | MODCK — Mode clock (clock source select) |
| 引脚 102 | VCC — +5V power supply |
| 引脚 103 | GND — Ground |
| 引脚 104 | TMS — JTAG test mode select |
| 引脚 105 | TCK — JTAG test clock |
| 引脚 106 | TDI — JTAG test data input |
| 引脚 107 | TDO — JTAG test data output |
| 引脚 108 | TRST — JTAG test reset (active low) |
| 引脚 109 | VCC — +5V power supply |
| 引脚 110 | GND — Ground |
| 引脚 111 | A0 — Address bus bit 0 (continued - mirrored side) |
| 引脚 112 | A1 — Address bus bit 1 (mirrored) |
| 引脚 113 | A2 — Address bus bit 2 (mirrored) |
| 引脚 114 | A3 — Address bus bit 3 (mirrored) |
| 引脚 115 | A4 — Address bus bit 4 (mirrored) |
| 引脚 116 | A5 — Address bus bit 5 (mirrored) |
| 引脚 117 | A6 — Address bus bit 6 (mirrored) |
| 引脚 118 | A7 — Address bus bit 7 (mirrored) |
| 引脚 119 | A8 — Address bus bit 8 (mirrored) |
| 引脚 120 | A9 — Address bus bit 9 (mirrored) |
| 引脚 121 | A10 — Address bus bit 10 (mirrored) |
| 引脚 122 | A11 — Address bus bit 11 (mirrored) |
| 引脚 123 | A12 — Address bus bit 12 (mirrored) |
| 引脚 124 | A13 — Address bus bit 13 (mirrored) |
| 引脚 125 | A14 — Address bus bit 14 (mirrored) |
| 引脚 126 | A15 — Address bus bit 15 (mirrored) |
| 引脚 127 | D0 — Data bus bit 0 (mirrored) |
| 引脚 128 | D1 — Data bus bit 1 (mirrored) |
| 引脚 129 | D2 — Data bus bit 2 (mirrored) |
| 引脚 130 | D3 — Data bus bit 3 (mirrored) |
| 引脚 131 | D4 — Data bus bit 4 (mirrored) |
| 引脚 132 | D5 — Data bus bit 5 (mirrored) |
| 引脚 133 | D6 — Data bus bit 6 (mirrored) |
| 引脚 134 | D7 — Data bus bit 7 (mirrored) |
| 引脚 135 | D8 — Data bus bit 8 (mirrored) |
| 引脚 136 | D9 — Data bus bit 9 (mirrored) |
| 引脚 137 | D10 — Data bus bit 10 (mirrored) |
| 引脚 138 | D11 — Data bus bit 11 (mirrored) |
| 引脚 139 | D12 — Data bus bit 12 (mirrored) |
| 引脚 140 | D13 — Data bus bit 13 (mirrored) |
| 引脚 141 | D14 — Data bus bit 14 (mirrored) |
| 引脚 142 | D15 — Data bus bit 15 (mirrored) |
| 引脚 143 | VCC — +5V power supply |
| 引脚 144 | GND — Ground |
典型应用
MC68340AB25E-FR 适用于 6 应用s: Industrial Automation Controllers, Telecommunications Line Interface Cards, Point-of-Sale (POS) Terminals, Legacy M68000 System Upgrades, Embedded Networking Gateways, Aerospace and Defense Embedded Systems.
Industrial Automation Controllers
The MC68340AB25E-FR's combination of a deterministic 68K CISC core, dual 32-bit DMA channels, and integrated chip-select generation makes it well-suited for industrial PLC and motion controller designs. The CPU32 core executes 68K legacy code without recompilation, preserving decades of validated application logic, while the dual DMA channels offload high-speed sensor and actuator data transfers from the CPU. With 4.8 MIPS throughput and 12 chip-select outputs, the part can directly address peripheral ICs without external glue logic. The extended -40C to +85C temperature range supports factory-floor deployments. Pair with external SRAM/Flash and RS-485 transceivers for a complete industrial control platform.
推荐
Telecommunications Line Interface Cards
The MC68340AB25E-FR was widely deployed in telecom line cards where its 68K architecture, dual SCI ports, and DMA capability enabled efficient handling of serial data streams. The 25 MHz CPU32 core provides 4.8 MIPS throughput, sufficient for protocol handling on T1/E1 and ISDN line cards of the era. The two SCI interfaces can be mapped to external UART transceivers for backplane communication. The integrated chip-select generator reduces BOM count on densely populated line cards, and the extended temperature range suits central-office and outdoor-cabinet environments. Legacy systems still in service rely on this part for protocol-stack continuity.
推荐
Point-of-Sale (POS) Terminals
The MC68340AB25E-FR's integrated peripherals - dual SCI, parallel I/O, timers, and DMA - match POS terminal requirements where a single chip must manage the keypad, display, printer, and network interface. The CPU32 core at 4.8 MIPS handles transaction processing and encryption offload, while the DMA channels support burst data transfers from card readers without interrupting the application. The 144-pin QEO package is compatible with high-volume surface-mount assembly lines common in POS manufacturing. NXP NND status means existing POS designs rely on remaining stock or qualified broker channels for production continuity.
推荐
Legacy M68000 System Upgrades
The MC68340AB25E-FR serves as an upgrade path for legacy M68000 designs that need DMA and additional peripherals without a full redesign. The CPU32 core is object-code compatible with earlier 68K processors, allowing existing firmware to run with no source changes. The dual 32-bit DMA channels replace discrete DMA controllers, freeing board real estate and reducing cost. Designers can migrate from earlier MC68000, MC68010, or MC68020 designs while preserving the investment in validated 68K code, schematics, and PCB layout footprints. This is the canonical use case for the MC68340 family.
推荐
Embedded Networking Gateways
The MC68340AB25E-FR's dual SCI ports and 32-bit DMA make it a fit for legacy serial-to-Ethernet or serial-to-Profibus gateway designs. The CPU32 core runs protocol-conversion stacks while DMA handles bulk packet forwarding between SCI and external Ethernet controllers. The integrated chip-select generator directly interfaces to memory and MAC/PHY ICs without external address-decoding logic. Many industrial networking products from the late 1990s and 2000s use this part, and it remains in production for maintenance of installed bases. For new gateway designs, consider NXP ColdFire or Kinetis families.
推荐
Aerospace and Defense Embedded Systems
The MC68340AB25E-FR is used in aerospace and defense applications where its mature 68K architecture, deterministic interrupt response, and extended-temperature grade meet DO-178/DO-254 validation requirements. The CPU32 core's CISC instruction set simplifies code review for safety-critical certification, and the integrated DMA and peripherals reduce component count - a reliability benefit in vibration-prone environments. The 144-pin QFP package is qualified for many avionics platforms. Ceramic-package variants (MC68340CFC25E) are preferred for high-reliability and radiation-tolerant applications.
推荐
推荐产品汇总
工程参考数据： MC68340AB25E-FR ——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 | MC68340AB16E | MC68340CFC25E | MC68340FE25E |
|---|---|---|---|---|
| Package | 144-pin QFP | 144-pin QFP - same | 144-pin QFP - same | 144-pin QFP - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Maximum Clock Frequency | 25 MHz | 16 MHz (-36%) | 25 MHz (same) | 25 MHz (same) |
| Performance (MIPS) | 4.8 MIPS | 3.2 MIPS (-33%) | 4.8 MIPS (same) | 4.8 MIPS (same) |
| Core Architecture | CPU32 (M68000-family) | CPU32 (M68000-family) | CPU32 (M68000-family) | CPU32 (M68000-family) |
| DMA Channels | 2 x 32-bit | 2 x 32-bit | 2 x 32-bit | 2 x 32-bit |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C (ceramic pkg) | -40C to +85C |
| Package Type | Plastic QFP (FR = T&R) | Plastic QFP | Ceramic QFP (high-rel) | Plastic QFP |
关键差异点
- Higher clock speed vs lower-tier same-family variant （对比 MC68340AB16E)
- Plastic QFP package vs ceramic high-reliability variant （对比 MC68340CFC25E)
- Integrated dual 32-bit DMA vs discrete DMA controllers （对比 MC68302FC16C)
设计说明
Estimated: With a 144-pin QFP at 0.5 mm lead pitch and 25 MHz / 5 V operation, route address and data buses with matched lengths within +/-2 cm to avoid bus skew. Place bulk decoupling capacitors (10 uF tantalum + 0.1 uF ceramic per VCC pin pair) within 5 mm of each VCC pin. The chip-select outputs from the SIM can drive up to 8 mA - verify that total loading stays within the 16-pin group limit on VCC/GND pairs per JEDEC QFP thermal guidelines.
The MC68340AB25E-FR dissipates approximately 0.6 W at 25 MHz / 5 V typical activity. With the 144-pin QFP package theta_JA of approximately 50 C/W on a standard 4-layer PCB, junction temperature rise is roughly 30 C above 25 C ambient, requiring derating above 70 C ambient. Per JEDEC EIA/JESD51 standards, add copper thermal vias beneath the exposed pad region if available, or specify a ceramic-package variant (MC68340CFC25E) for high-temperature or high-reliability deployments.
Do not confuse the 'AB' speed grade (25 MHz, 4.8 MIPS) with the 'FT' grade (16 MHz, 3.2 MIPS) - substituting the wrong grade silently halves performance. Verify RESET and HALT are properly pulled up with 4.7 kohm resistors and that the reset pulse meets the 100 ms minimum for the on-chip PLL. Always verify the SIM chip-select timing configuration matches external memory access time, and ensure DTACK is properly terminated with a pull-up to avoid bus errors. Per the NXP Community thread 'Replacement MCU for MC68340', NXP does not recommend ColdFire as a pin-compatible drop-in - plan for software recompilation if migrating.
合规信息
RoHS, REACH, lead-free, and halogen-free status are not explicitly documented in the verified web data for this NND part. The MC68340AB25E-FR predates widespread RoHS adoption; contact NXP or check lot-specific documentation for current compliance status. AEC-Q100 not applicable for legacy MPU in this product family.
