MC68302AG16VC - 16MHz M68302 MPU + Comm Processor | NXP
Référence : MC68302AG16VC ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $66.45 | $66,45 |
| 25 | $66.45 | $1 661,25 |
| 100 | $63.13 | $6 313,00 |
| 500 | $59.81 | $29 905,00 |
| 1 000 | $56.48 | $56 480,00 |
| 10 000 | $53.16 | $531 600,00 |
MC68302AG16VC Présentation
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.
Alternatives de remplacement direct pour MC68302AG16VC — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec MC68302AG16VC (même facteur de forme et même empreinte) — différant par DMA Channels, Maximum Clock Frequency, Package.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
MC68302PV16VC
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
KMC68302AG16VC
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC68302PV25VC
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC68302AG16VE
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC68302EH16C
✅ Remplacement direct✓ En stock
$17.1 / unité
Voir la fiche technique →MC68302PV16VE
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC68302AG16VC Valeurs maximales et caractéristiques électriques
| 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 |
| Boîtier / Format | 144-LQFP (20 x 20 mm) |
| Type de montage | 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) |
Configuration des broches de MC68302AG16VC
| Broche 1 | TCLK1 — SCC1 Transmit Clock |
| Broche 2 | RCLK1 — SCC1 Receive Clock |
| Broche 3 | TXD1 — SCC1 Transmit Data |
| Broche 4 | RXD1 — SCC1 Receive Data |
| Broche 5 | CD1 — SCC1 Carrier Detect |
| Broche 6 | CTS1 — SCC1 Clear To Send |
| Broche 7 | RTS1 — SCC1 Request To Send |
| Broche 8 | VCCSYN — Synthesizer supply |
| Broche 9 | VDDSYN — Synthesizer VDD |
| Broche 10 | XTAL2 — Crystal oscillator output |
| Broche 11 | XTAL1 — Crystal oscillator input |
| Broche 12 | EXTAL — External clock input |
| Broche 13 | VSS — Ground |
| Broche 14 | BR/CS3 — Bus request / Chip Select 3 |
| Broche 15 | BG/CS2 — Bus grant / Chip Select 2 |
| Broche 16 | BGACK/CS1 — Bus grant ack / Chip Select 1 |
| Broche 17 | CS0 — Chip Select 0 |
| Broche 18 | CS4 — Chip Select 4 |
| Broche 19 | CS5 — Chip Select 5 |
| Broche 20 | CS6 — Chip Select 6 |
| Broche 21 | CS7 — Chip Select 7 |
| Broche 22 | A0 — Address bus 0 |
| Broche 23 | A1 — Address bus 1 |
| Broche 24 | A2 — Address bus 2 |
| Broche 25 | A3 — Address bus 3 |
| Broche 26 | A4 — Address bus 4 |
| Broche 27 | A5 — Address bus 5 |
| Broche 28 | A6 — Address bus 6 |
| Broche 29 | A7 — Address bus 7 |
| Broche 30 | A8 — Address bus 8 |
| Broche 31 | A9 — Address bus 9 |
| Broche 32 | A10 — Address bus 10 |
| Broche 33 | A11 — Address bus 11 |
| Broche 34 | A12 — Address bus 12 |
| Broche 35 | A13 — Address bus 13 |
| Broche 36 | A14 — Address bus 14 |
| Broche 37 | A15 — Address bus 15 |
| Broche 38 | A16 — Address bus 16 |
| Broche 39 | A17 — Address bus 17 |
| Broche 40 | A18 — Address bus 18 |
| Broche 41 | A19 — Address bus 19 |
| Broche 42 | A20 — Address bus 20 |
| Broche 43 | A21 — Address bus 21 |
| Broche 44 | A22 — Address bus 22 |
| Broche 45 | A23 — Address bus 23 |
| Broche 46 | D0 — Data bus 0 |
| Broche 47 | D1 — Data bus 1 |
| Broche 48 | D2 — Data bus 2 |
| Broche 49 | D3 — Data bus 3 |
| Broche 50 | D4 — Data bus 4 |
| Broche 51 | D5 — Data bus 5 |
| Broche 52 | D6 — Data bus 6 |
| Broche 53 | D7 — Data bus 7 |
| Broche 54 | D8 — Data bus 8 |
| Broche 55 | D9 — Data bus 9 |
| Broche 56 | D10 — Data bus 10 |
| Broche 57 | D11 — Data bus 11 |
| Broche 58 | D12 — Data bus 12 |
| Broche 59 | D13 — Data bus 13 |
| Broche 60 | D14 — Data bus 14 |
| Broche 61 | D15 — Data bus 15 |
| Broche 62 | VCC — Power supply +5V |
| Broche 63 | VSS — Ground |
| Broche 64 | AS — Address Strobe |
| Broche 65 | DS — Data Strobe |
| Broche 66 | R/W — Read / Write |
| Broche 67 | SIZ0 — Transfer Size 0 |
| Broche 68 | SIZ1 — Transfer Size 1 |
| Broche 69 | TS — Transfer Start |
| Broche 70 | TA — Transfer Acknowledge |
| Broche 71 | TEA — Transfer Error Acknowledge |
| Broche 72 | HALT — Halt (open-drain) |
| Broche 73 | RESET — Reset (open-drain) |
| Broche 74 | VCC — Power supply +5V |
| Broche 75 | VSS — Ground |
| Broche 76 | IRQ1 — Interrupt Request 1 (IPL0) |
| Broche 77 | IRQ2 — Interrupt Request 2 (IPL1) |
| Broche 78 | IRQ3 — Interrupt Request 3 (IPL2) |
| Broche 79 | IRQ4 — Interrupt Request 4 (Autovector) |
| Broche 80 | AVEC — Autovector Enable |
| Broche 81 | FCOUT — Frequency Control Out |
| Broche 82 | FC1 — Function Code 1 |
| Broche 83 | FC0 — Function Code 0 |
| Broche 84 | TCLK2 — SCC2 Transmit Clock |
| Broche 85 | RCLK2 — SCC2 Receive Clock |
| Broche 86 | TXD2 — SCC2 Transmit Data |
| Broche 87 | RXD2 — SCC2 Receive Data |
| Broche 88 | CD2 — SCC2 Carrier Detect |
| Broche 89 | CTS2 — SCC2 Clear To Send |
| Broche 90 | RTS2 — SCC2 Request To Send |
| Broche 91 | BRG1 — Baud Rate Generator 1 |
| Broche 92 | BRG2 — Baud Rate Generator 2 |
| Broche 93 | TXD3 — SCC3 (UART) Transmit Data |
| Broche 94 | RXD3 — SCC3 (UART) Receive Data |
| Broche 95 | CTS3 — SCC3 (UART) Clear To Send |
| Broche 96 | RTS3 — SCC3 (UART) Request To Send |
| Broche 97 | PA0 — Port A bit 0 |
| Broche 98 | PA1 — Port A bit 1 |
| Broche 99 | PA2 — Port A bit 2 |
| Broche 100 | PA3 — Port A bit 3 |
| Broche 101 | PA4 — Port A bit 4 |
| Broche 102 | PA5 — Port A bit 5 |
| Broche 103 | PA6 — Port A bit 6 |
| Broche 104 | PA7 — Port A bit 7 |
| Broche 105 | PB0 — Port B bit 0 |
| Broche 106 | PB1 — Port B bit 1 |
| Broche 107 | PB2 — Port B bit 2 |
| Broche 108 | PB3 — Port B bit 3 |
| Broche 109 | PB4 — Port B bit 4 |
| Broche 110 | PB5 — Port B bit 5 |
| Broche 111 | PB6 — Port B bit 6 |
| Broche 112 | PB7 — Port B bit 7 |
| Broche 113 | PC0 — Port C bit 0 |
| Broche 114 | PC1 — Port C bit 1 |
| Broche 115 | PC2 — Port C bit 2 |
| Broche 116 | PC3 — Port C bit 3 |
| Broche 117 | PC4 — Port C bit 4 |
| Broche 118 | PC5 — Port C bit 5 |
| Broche 119 | PC6 — Port C bit 6 |
| Broche 120 | PC7 — Port C bit 7 |
| Broche 121 | RAS1 — DRAM Row Address Strobe 1 |
| Broche 122 | RAS0 — DRAM Row Address Strobe 0 |
| Broche 123 | CAS3 — DRAM Column Address Strobe 3 |
| Broche 124 | CAS2 — DRAM Column Address Strobe 2 |
| Broche 125 | CAS1 — DRAM Column Address Strobe 1 |
| Broche 126 | CAS0 — DRAM Column Address Strobe 0 |
| Broche 127 | WE — DRAM Write Enable |
| Broche 128 | DBREQ — DMA Bus Request |
| Broche 129 | DBACK — DMA Bus Acknowledge |
| Broche 130 | DONE — DMA Done |
| Broche 131 | DREQ1 — DMA Request 1 |
| Broche 132 | DREQ0 — DMA Request 0 |
| Broche 133 | TC1 — Timer/Counter 1 |
| Broche 134 | TC0 — Timer/Counter 0 |
| Broche 135 | TIN1 — Timer Input 1 |
| Broche 136 | TIN0 — Timer Input 0 |
| Broche 137 | TOUT1 — Timer Output 1 |
| Broche 138 | TOUT0 — Timer Output 0 |
| Broche 139 | VCC — Power supply +5V |
| Broche 140 | VSS — Ground |
| Broche 141 | RESETH — Hardware reset |
| Broche 142 | MODCK — Mode Clock (clock source select) |
| Broche 143 | VCCSYN2 — Synthesizer supply 2 |
| Broche 144 | NC — Not connected (per datasheet) |
Applications typiques
MC68302AG16VC convient pour 6 applications: 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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour MC68302AG16VC — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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 |
Principaux différenciateurs
- Mature 16 MHz commercial-grade M68000 + RISC CPM (vs MC68302PV25VC)
- Enhanced SCC controller option (vs MC68302EH16C)
- Aftermarket availability through Rochester Electronics (vs KMC68302AG16VC)
Notes de conception
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.
Informations de conformité
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.