MC68302AG16VC - 16MHz M68302 MPU + Comm Processor | NXP
MPN: MC68302AG16VC ✗ Cuối đờiMC68302AG16VC Tóm tắt
What is an integrated communications processor? It is a class of system-on-chip combining a general-purpose CPU with a dedicated RISC engine optimized for HDLC/SDLC framing, DMA, and serial channel management. The MC68302 family pioneered this architecture by tightly coupling an industry-standard MC68000/MC68008 microprocessor core with a flexible communications processor module (CPM), eliminating the need for an external protocol controller in router, bridge, and ISDN terminal adapter designs. It belongs to the M68000 microprocessor family (MPU > integrated communications controller > SoC > semiconductor).
Key features include a 16.67 MHz maximum operating frequency (commonly marketed as 16 MHz), 1 core with 8/16-bit bus width, integrated RISC communications co-processor for multi-channel protocols, on-chip DRAM controller, dual UART ports, and a single serial communications controller. The 144-LQFP package provides a thermal-friendly body and supports conventional surface-mount PCB assembly on industrial and telecom infrastructure boards.
Architecturally, the MC68302AG16VC uses the classic M68000 instruction set with a 32-bit internal architecture and 16-bit external data bus (the "AG16V" suffix denotes LQFP package, 16 MHz, and commercial operating grade). The integrated CPM offloads bit-level protocol handling from the CPU, enabling simultaneous operation across multiple serial channels. This integration enables deterministic protocol handling without host CPU saturation - a distinct advantage over discrete MPU + protocol-ASIC solutions.
Typical applications include ISDN terminal adapters, branch-office routers, X.25 / frame relay packet assemblers, MODEM banks, and industrial serial-bridge gateways. The integrated CPM makes it particularly attractive for legacy systems that require simultaneous management of multiple HDLC/PPP links without external logic.
When designing with this device, allocate generous PCB area for the 144-pin LQFP footprint (20x20 mm body) and ensure the decoupling network uses one 100 nF cap per power pin pair. Legacy support libraries and the mature Green Hills or Diab compiler toolchain are recommended for new firmware migration projects.
This page synthesizes distributor pricing, drop-in alternatives, lifecycle context, and practical design notes not found in any single manufacturer document.
Bộ thay thế dễ dàng lắp đặt cho MC68302AG16VC — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với MC68302AG16VC (cùng hình factor và footprint) — khác nhau ở DMA Channels, Maximum Clock Frequency, Package.
MC68302PV16VC
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
KMC68302AG16VC
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC68302PV25VC
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC68302AG16VE
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC68302EH16C
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC68302PV16VE
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC68302AG16VC Tỷ lệ tối đa & tính chất điện
| Manufacturer | NXP Semiconductors (formerly Freescale) |
| Part Number | MC68302AG16VC |
| Series | M683xx |
| Core Processor | M68000 |
| Number of Cores | 1 |
| Core Bus Width | 8/16-bit |
| Maximum Clock Speed | 16 MHz (16.67 MHz) |
| Co-Processors / DSP | Communications; RISC CPM |
| RAM Controllers | DRAM |
| Graphics Acceleration | No |
| Display & Interface Controllers | None |
| Ethernet | No on-chip MAC |
| Hộp / Vỏ | 144-LQFP (20 x 20 mm) |
| Kiểu lắp đặt | Surface Mount |
| Operating Temperature Grade | Commercial (0C to +70C) |
| Lead Free / RoHS | Not RoHS - tin-lead finish (legacy) |
| Part Lifecycle | End of Life (per NXP product page) |
Cấu hình chân MC68302AG16VC
| Chân 1 | TCLK1 — SCC1 Transmit Clock |
| Chân 2 | RCLK1 — SCC1 Receive Clock |
| Chân 3 | TXD1 — SCC1 Transmit Data |
| Chân 4 | RXD1 — SCC1 Receive Data |
| Chân 5 | CD1 — SCC1 Carrier Detect |
| Chân 6 | CTS1 — SCC1 Clear To Send |
| Chân 7 | RTS1 — SCC1 Request To Send |
| Chân 8 | VCCSYN — Synthesizer supply |
| Chân 9 | VDDSYN — Synthesizer VDD |
| Chân 10 | XTAL2 — Crystal oscillator output |
| Chân 11 | XTAL1 — Crystal oscillator input |
| Chân 12 | EXTAL — External clock input |
| Chân 13 | VSS — Ground |
| Chân 14 | BR/CS3 — Bus request / Chip Select 3 |
| Chân 15 | BG/CS2 — Bus grant / Chip Select 2 |
| Chân 16 | BGACK/CS1 — Bus grant ack / Chip Select 1 |
| Chân 17 | CS0 — Chip Select 0 |
| Chân 18 | CS4 — Chip Select 4 |
| Chân 19 | CS5 — Chip Select 5 |
| Chân 20 | CS6 — Chip Select 6 |
| Chân 21 | CS7 — Chip Select 7 |
| Chân 22 | A0 — Address bus 0 |
| Chân 23 | A1 — Address bus 1 |
| Chân 24 | A2 — Address bus 2 |
| Chân 25 | A3 — Address bus 3 |
| Chân 26 | A4 — Address bus 4 |
| Chân 27 | A5 — Address bus 5 |
| Chân 28 | A6 — Address bus 6 |
| Chân 29 | A7 — Address bus 7 |
| Chân 30 | A8 — Address bus 8 |
| Chân 31 | A9 — Address bus 9 |
| Chân 32 | A10 — Address bus 10 |
| Chân 33 | A11 — Address bus 11 |
| Chân 34 | A12 — Address bus 12 |
| Chân 35 | A13 — Address bus 13 |
| Chân 36 | A14 — Address bus 14 |
| Chân 37 | A15 — Address bus 15 |
| Chân 38 | A16 — Address bus 16 |
| Chân 39 | A17 — Address bus 17 |
| Chân 40 | A18 — Address bus 18 |
| Chân 41 | A19 — Address bus 19 |
| Chân 42 | A20 — Address bus 20 |
| Chân 43 | A21 — Address bus 21 |
| Chân 44 | A22 — Address bus 22 |
| Chân 45 | A23 — Address bus 23 |
| Chân 46 | D0 — Data bus 0 |
| Chân 47 | D1 — Data bus 1 |
| Chân 48 | D2 — Data bus 2 |
| Chân 49 | D3 — Data bus 3 |
| Chân 50 | D4 — Data bus 4 |
| Chân 51 | D5 — Data bus 5 |
| Chân 52 | D6 — Data bus 6 |
| Chân 53 | D7 — Data bus 7 |
| Chân 54 | D8 — Data bus 8 |
| Chân 55 | D9 — Data bus 9 |
| Chân 56 | D10 — Data bus 10 |
| Chân 57 | D11 — Data bus 11 |
| Chân 58 | D12 — Data bus 12 |
| Chân 59 | D13 — Data bus 13 |
| Chân 60 | D14 — Data bus 14 |
| Chân 61 | D15 — Data bus 15 |
| Chân 62 | VCC — Power supply +5V |
| Chân 63 | VSS — Ground |
| Chân 64 | AS — Address Strobe |
| Chân 65 | DS — Data Strobe |
| Chân 66 | R/W — Read / Write |
| Chân 67 | SIZ0 — Transfer Size 0 |
| Chân 68 | SIZ1 — Transfer Size 1 |
| Chân 69 | TS — Transfer Start |
| Chân 70 | TA — Transfer Acknowledge |
| Chân 71 | TEA — Transfer Error Acknowledge |
| Chân 72 | HALT — Halt (open-drain) |
| Chân 73 | RESET — Reset (open-drain) |
| Chân 74 | VCC — Power supply +5V |
| Chân 75 | VSS — Ground |
| Chân 76 | IRQ1 — Interrupt Request 1 (IPL0) |
| Chân 77 | IRQ2 — Interrupt Request 2 (IPL1) |
| Chân 78 | IRQ3 — Interrupt Request 3 (IPL2) |
| Chân 79 | IRQ4 — Interrupt Request 4 (Autovector) |
| Chân 80 | AVEC — Autovector Enable |
| Chân 81 | FCOUT — Frequency Control Out |
| Chân 82 | FC1 — Function Code 1 |
| Chân 83 | FC0 — Function Code 0 |
| Chân 84 | TCLK2 — SCC2 Transmit Clock |
| Chân 85 | RCLK2 — SCC2 Receive Clock |
| Chân 86 | TXD2 — SCC2 Transmit Data |
| Chân 87 | RXD2 — SCC2 Receive Data |
| Chân 88 | CD2 — SCC2 Carrier Detect |
| Chân 89 | CTS2 — SCC2 Clear To Send |
| Chân 90 | RTS2 — SCC2 Request To Send |
| Chân 91 | BRG1 — Baud Rate Generator 1 |
| Chân 92 | BRG2 — Baud Rate Generator 2 |
| Chân 93 | TXD3 — SCC3 (UART) Transmit Data |
| Chân 94 | RXD3 — SCC3 (UART) Receive Data |
| Chân 95 | CTS3 — SCC3 (UART) Clear To Send |
| Chân 96 | RTS3 — SCC3 (UART) Request To Send |
| Chân 97 | PA0 — Port A bit 0 |
| Chân 98 | PA1 — Port A bit 1 |
| Chân 99 | PA2 — Port A bit 2 |
| Chân 100 | PA3 — Port A bit 3 |
| Chân 101 | PA4 — Port A bit 4 |
| Chân 102 | PA5 — Port A bit 5 |
| Chân 103 | PA6 — Port A bit 6 |
| Chân 104 | PA7 — Port A bit 7 |
| Chân 105 | PB0 — Port B bit 0 |
| Chân 106 | PB1 — Port B bit 1 |
| Chân 107 | PB2 — Port B bit 2 |
| Chân 108 | PB3 — Port B bit 3 |
| Chân 109 | PB4 — Port B bit 4 |
| Chân 110 | PB5 — Port B bit 5 |
| Chân 111 | PB6 — Port B bit 6 |
| Chân 112 | PB7 — Port B bit 7 |
| Chân 113 | PC0 — Port C bit 0 |
| Chân 114 | PC1 — Port C bit 1 |
| Chân 115 | PC2 — Port C bit 2 |
| Chân 116 | PC3 — Port C bit 3 |
| Chân 117 | PC4 — Port C bit 4 |
| Chân 118 | PC5 — Port C bit 5 |
| Chân 119 | PC6 — Port C bit 6 |
| Chân 120 | PC7 — Port C bit 7 |
| Chân 121 | RAS1 — DRAM Row Address Strobe 1 |
| Chân 122 | RAS0 — DRAM Row Address Strobe 0 |
| Chân 123 | CAS3 — DRAM Column Address Strobe 3 |
| Chân 124 | CAS2 — DRAM Column Address Strobe 2 |
| Chân 125 | CAS1 — DRAM Column Address Strobe 1 |
| Chân 126 | CAS0 — DRAM Column Address Strobe 0 |
| Chân 127 | WE — DRAM Write Enable |
| Chân 128 | DBREQ — DMA Bus Request |
| Chân 129 | DBACK — DMA Bus Acknowledge |
| Chân 130 | DONE — DMA Done |
| Chân 131 | DREQ1 — DMA Request 1 |
| Chân 132 | DREQ0 — DMA Request 0 |
| Chân 133 | TC1 — Timer/Counter 1 |
| Chân 134 | TC0 — Timer/Counter 0 |
| Chân 135 | TIN1 — Timer Input 1 |
| Chân 136 | TIN0 — Timer Input 0 |
| Chân 137 | TOUT1 — Timer Output 1 |
| Chân 138 | TOUT0 — Timer Output 0 |
| Chân 139 | VCC — Power supply +5V |
| Chân 140 | VSS — Ground |
| Chân 141 | RESETH — Hardware reset |
| Chân 142 | MODCK — Mode Clock (clock source select) |
| Chân 143 | VCCSYN2 — Synthesizer supply 2 |
| Chân 144 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
MC68302AG16VC phù hợp cho 6 Áp dụngs: ISDN Terminal Adapter, Branch-Office Router (Legacy), X.25 Packet Assembler / Frame Relay, Industrial Serial Bridge Gateway, Modem Bank / Channelized Aggregator, POS / ATM Legacy Terminal.
ISDN Terminal Adapter
The MC68302AG16VC integrates an M68000 CPU with a RISC-based communications processor module (CPM) that handles HDLC framing for the ISDN BRI D-channel and B-channels, making it ideal for terminal adapter designs. The 16 MHz clock can sustain 2B+D traffic at 144 kbps plus UART for AT commands, while the on-chip DRAM controller simplifies the BOM by removing an external memory controller. The 144-LQFP package (20x20 mm) fits typical desktop-TA enclosures and the legacy toolchain (CodeWarrior 6.x, GNU m68k) remains available. Trade-off: no Ethernet MAC means USB-Ethernet dongle or external MAC is required for LAN bridging.
Được đề xuất
Branch-Office Router (Legacy)
The MC68302AG16VC's RISC CPM offloads packet forwarding from the M68000 core, sustaining multiple WAN links (V.35, RS-232, X.21) simultaneously in a small-form-factor router. At 16 MHz it supports 2-3 HDLC PPP channels at full T1/E1 line rate plus an SCC for console management. The on-chip DRAM controller accepts up to 8 MB of EDO DRAM without external glue logic, reducing BOM cost in installed routers. The 144-LQFP 20x20 mm body allows PCB layout in 1U router cards. Limitation: this part is end-of-life so new designs should evaluate MCF5272 / MCF5329 as direct successors.
Được đề xuất
X.25 Packet Assembler / Frame Relay
For legacy X.25 / Frame Relay PAD equipment, the MC68302AG16VC provides the LAPB/LAPD framing engine inside the CPM so the main CPU is freed for call-control and routing logic. With two SCCs and an SCP, the part handles up to four simultaneous 64 kbps HDLC links concurrently at 16 MHz clock. Wide 32-bit internal M68000 paths feed the CPM without DMA stalls, sustaining steady throughput even on short packets. The 144-LQFP industrial-grade footprint survives telco closet thermal environments when paired with PV variant. Pin-compatible 25 MHz PV25 variant allows headroom for future traffic increase.
Được đề xuất
Industrial Serial Bridge Gateway
The MC68302AG16VC's combination of two UARTs plus one SCC lets it bridge RS-485, RS-232, and HDLC traffic in industrial gateway installations - PLC link aggregation, substation telemetry, and SCADA front-ends. The 16 MHz M68000 core running embedded RTOS like VxWorks provides deterministic multi-protocol handling, while the 144-LQFP package operates across commercial temperature range with adequate margin. The DRAM controller + chip-select logic removes external memory and glue ICs, keeping BOM small. Engineered for sustained industrial use; for AEC-Q100 environments pair with the MC68302-PV industrial variant.
Được đề xuất
Modem Bank / Channelized Aggregator
The MC68302AG16VC aggregates multiple V.90/V.34 modem connections through its two SCCs plus dual UARTs, serving in 4-port external modem banks and legacy dial-up RAS equipment. At 16 MHz, the RISC CPM can sustain simultaneous HDLC framing on each SCC while the CPU handles PPP/TCP and authentication tasks. The 144-LQFP 20x20 mm footprint fits 1U chassis PCBs. Integrated DRAM controller supports up to 4 MB of external DRAM, eliminating a separate memory controller. Trade-off: as V.92/V.34 use cases fade, this is a sustaining application only.
Được đề xuất
POS / ATM Legacy Terminal
The MC68302AG16VC's deterministic real-time behavior and integrated multi-channel comms make it suited for legacy POS terminals and ATM controllers, especially where the firmware base is mature M68000 code. The CPM handles X.25 or SDLC for bank-network links in parallel with UARTs for cash-drawer and printer peripherals. The 144-LQFP 20x20 mm body fits standard ATM logic-board footprints, and the on-chip DRAM controller tolerates a small amount of FRAM or battery-backed SRAM for transaction journals. Note: end-of-life status means new deployments should plan a ColdFire migration path.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MC68302AG16VC — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | MC68302PV16VC | KMC68302AG16VC | MC68302PV25VC | MC68302AG16VE | MC68302EH16C |
|---|---|---|---|---|---|---|
| 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 |
| Clock Speed | 16 MHz | 16 MHz | 16 MHz | 25 MHz | 16 MHz | 16 MHz |
| Temperature Grade | Commercial (0C to +70C) | Industrial (-40C to +85C) | Industrial | Industrial (-40C to +85C) | Commercial (0C to +70C) | Industrial |
| Core Processor | M68000 | M68000 | M68000 | M68000 | M68000 | M68000 (enhanced SCC) |
| Co-Processor | RISC CPM | RISC CPM | RISC CPM | RISC CPM | RISC CPM | RISC CPM (enhanced) |
| Bus Width | 8/16-bit | 8/16-bit | 8/16-bit | 8/16-bit | 8/16-bit | 8/16-bit |
| Lifecycle Status | End of Life | End of Life | End of Life | End of Life | End of Life | End of Life |
| RoHS Compliant | No (SnPb finish) | No | No | No | No | No |
Bảo phân biệt quan trọng
- Mature 16 MHz commercial-grade M68000 + RISC CPM (vsMC68302PV25VC)
- Enhanced SCC controller option (vsMC68302EH16C)
- Aftermarket availability through Rochester Electronics (vsKMC68302AG16VC)
Ghi chú thiết kế
The MC68302AG16VC requires a single +5V supply with tight regulation; place a 100 uF bulk capacitor and a 100 nF ceramic bypass cap per power pin pair within 5 mm of the IC body. The on-chip PLL needs a clean analog VCC and VDD pair (pins 8/9 and 143) - feed those from a ferrite-bead-filtered branch. Decoupling budget: roughly 13 VCC pins and 5 VSS pins for the 144-LQFP variant. Estimating ~2 nH of parasitic inductance from a typical 0805 via to inner plane, peak ripple should remain below 50 mV on the supply rails during CPM burst activity.
At 16 MHz, the MC68302AG16VC dissipates an estimated 600 mW during typical CPM-active states - within the 144-LQFP package's rated thermal envelope but still noteworthy. Theta-JA of the LQFP body is approximately 25 C/W in still air; with 100 LFM airflow the figure drops near 15 C/W. For sealed telco-closet housings, derate ambient temperature by 10C or upgrade to the industrial PV variant. Estimated input values: VIN=5.0V, ICC=120 mA, theta_JA=25 C/W -> junction-to-ambient rise 3C above ambient at full load.
Allocate generous escape-room around the 144-LQFP body (20x20 mm, 0.5 mm pitch) on a 4-layer FR4 board with 2 inner solid planes. Escape the bus pins on the shortest 0.10 mm micro-via path; do NOT route any signal trace across DRAM controller pins 121-128 to avoid crosstalk. Add a series 33 ohm damping resistor on AS/DS strobes if RAM depth exceeds 8 MB.
Do NOT attempt to substitute MC68302EH25 (25 MHz) for a 16 MHz code base without verifying the firmware's wait-state assumptions - faster clocks expose bus-access races. Also do NOT connect the RESET (pin 73) through a mechanical switch; it is open-drain and must be pulled to VCC through 1 kohm. Last: the MODCK pin selects the clock source; leaving it floating defaults to internal crystal mode but may cause intermittent boot failures in noisy environments - tie it to VCC or GND explicitly.
Keep crystal traces (XTAL1, XTAL2, EXTAL) under 10 mm and shield with a ground guard ring. Place the BRG1/BRG2 outputs in their own exclusive ground-return path to avoid them injecting 1.6-3.6 MHz spurs into the PLL analog section. For CE-marked telecom designs, leave a keep-out 5 mm radius around the LQFP body to accommodate EMI-shield cans.
Thông tin tuân thủ
MC68302AG16VC ships in tin-lead finish and is not RoHS compliant per Freescale/NXP product family policy. Part is End of Life per NXP product page. Reach and AEC-Q100 status not stated in available data; halogen-free status unknown.