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Analog Devices Inc./Maxim Integrated DS80C390-FCR
- Part No.:
- DS80C390-FCR
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
DS80C390-FCR.pdf
- Description:
- IC MCU 8BIT ROMLESS 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,764
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Product details
Overview
DS80C390-FCR from Maxim Integrated (now Analog Devices) is a high-speed 8051-compatible microcontroller featuring dual CAN 2.0B controllers, 4kB internal SRAM usable as program/data/stack memory, and execution at up to 100MHz apparent speed (40MHz crystal × 2.5). It operates from 0°C to +70°C in a 64-pin LQFP package and targets real-time industrial control systems requiring deterministic CAN communication and legacy 8051 software compatibility.
For engineers reviewing the DS80C390-FCR datasheet, DS80C390-FCR pinout, DS80C390-FCR application, or DS80C390-FCR equivalent, key selection criteria include dual-CAN timing determinism, 4kB on-chip SRAM allocation flexibility, LQFP-64 thermal and routing constraints, and compatibility with existing 80C52 firmware and toolchains.
Technical Context
The DS80C390-FCR implements a redesigned 8051 core executing instructions in 4 clock cycles per machine cycle (vs. 12 in standard 8051), enabling full-speed operation at 40MHz crystal input. Its dual independent CAN 2.0B controllers each support 15 message objects, 11-bit or 29-bit identifiers, and SIESTA low-power mode - all without CPU intervention.
Memory architecture includes user-selectable multiplexed/nonmultiplexed bus modes, 22-bit addressing for up to 4MB external memory, and an optional 10-bit stack pointer. The hardware math accelerator accelerates 16/32-bit multiply/divide and shift/normalize operations, directly reducing interrupt latency in control loops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 80C52-compatible, 4-clock-cycle machine cycle (vs. 12 in legacy 8051) |
| Max Clock Frequency | 40MHz crystal input → ~100MHz effective instruction throughput |
| On-Chip Memory | 4kB SRAM configurable as program, data, or stack memory |
| CAN Interfaces | Dual independent CAN 2.0B controllers, each with 15 message objects |
| Serial Interfaces | Two full-duplex UARTs (SP0, SP1), one supporting IrDA clock programming |
| Package & Temp Range | 64-pin LQFP, commercial temperature range (0°C to +70°C) |
| Power Modes | Active (80–150mA), Idle (40–75mA), Stop (1–120µA), with bandgap-enabled option |
Pinout & Package
DS80C390-FCR is housed in a 64-pin LQFP (Leadless Quad Flat Package) with 0.5mm pitch, optimized for automated assembly and thermal dissipation in industrial PCB layouts. Pin numbering follows standard top-view orientation with Pin 1 marked by corner notch or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pins 8,22,40,56) | Supply Voltage Input | +5V digital supply; four dedicated pins reduce IR drop and improve noise immunity |
| GND (Pins 9,25,41,57) | Digital Ground Reference | Four separate ground connections minimize ground bounce across I/O banks |
| XTAL1/XTAL2 (Pins 23,24) | Clock Oscillator Interface | Supports fundamental-mode crystals up to 40MHz or external CMOS clock source |
| P5.0–P5.3 (Pins 21–18) | CAN Physical Layer I/O | Dedicated C0TX/C0RX/C1TX/C1RX signals; require external CAN transceivers |
| ALE (Pin 46) | Address Latch Enable | Drives external latch during multiplexed bus access; 1.5-cycle pulse width at 4× clock rate |
| PSEN (Pin 45) | Program Store Enable | Active-low chip enable for external ROM; synchronized to internal instruction fetch timing |
| EA (Pin 47) | External Access Enable | Must be tied to GND to force external program memory access (no internal ROM) |
| MUX (Pin 26) | Bus Mode Select | Low = multiplexed AD0–AD7; High = demultiplexed address/data separation |
Key Features
| Feature | Design Value |
|---|---|
| Hardware Math Accelerator | Reduces 32-bit multiply/divide latency by >5× vs. software emulation, critical for PID loop execution |
| Dual CAN 2.0B Controllers | Each supports 15 message objects, 11-/29-bit IDs, and SIESTA low-power mode - enabling concurrent network management |
| Configurable Memory Interface | User-selectable multiplexed/nonmultiplexed mode and 22-bit addressing allow flexible expansion up to 4MB external memory |
| Frequency Multiplier | Internal PLL enables full-speed operation from reduced crystal frequency (e.g., 20MHz crystal → 40MHz core), lowering EMI emissions |
| Interrupt Architecture | 16 interrupt sources including six external (INT0–INT5), with priority levels programmable via SFR registers |
Applications
| Industrial Motion Control | Factory Automation Gateway |
|---|---|
Use Scenario: Real-time coordination of servo drives and I/O modules over CANopen networks in packaging machinery. IC Role / Device Role / Timing Role: Primary controller executing motion profiles while managing dual CAN buses for drive synchronization and HMI communication. Use Value: Deterministic dual-CAN timing ensures sub-millisecond jitter in command propagation; 4kB SRAM hosts both control algorithms and protocol stacks. |
Use Scenario: Protocol translation between Modbus RTU field devices and EtherNet/IP supervisory systems in discrete manufacturing lines. IC Role / Device Role / Timing Role: Edge gateway processor running dual CAN interfaces for legacy device aggregation and UART-to-Ethernet bridging firmware. Use Value: Two full-duplex UARTs handle serial diagnostics and host interface; 40MHz core sustains real-time packet parsing without external co-processors. |
| Agricultural Equipment Telematics | Medical Diagnostic Instrument Control |
Use Scenario: CAN-based sensor fusion and GPS logging in autonomous tractors, transmitting fault codes and harvest metrics to fleet management servers. IC Role / Device Role / Timing Role: Central telemetry controller interfacing GPS, IMU, and engine CAN buses while managing cellular modem UART. Use Value: SIESTA low-power CAN mode extends battery life during idle periods; hardware math accelerator enables fast CRC-32 checksums on log data. |
Use Scenario: Embedded controller for portable ultrasound units requiring precise timing of analog front-end sampling and display refresh. IC Role / Device Role / Timing Role: Timing-critical subsystem manager coordinating ADC triggers, display frame buffers, and USB host communication. Use Value: 100MHz-equivalent instruction speed guarantees <100ns response to safety-critical interrupts; 4kB SRAM isolates real-time tasks from UI code. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed 8051-based microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS80C400 | Integrated 10/100 Ethernet MAC + TCP/IP stack; no CAN controllers; 68-pin PLCC only | Suitable for LAN-connected devices but lacks native CAN support required for DS80C390-FCR's automotive/industrial use cases | Select DS80C400 only when Ethernet connectivity outweighs CAN requirements and PLCC packaging is acceptable |
| ST7FLITE52K4 | 8-bit ST7 core (not 8051-compatible); single CAN 2.0B; 32KB Flash; 2KB RAM; 48-pin LQFP | Requires full firmware rewrite; lower memory density and single-CAN limit scalability in multi-bus systems | Choose only for cost-sensitive designs where 8051 compatibility and dual CAN are not mandatory |
Compared with DS80C390-FCR, DS80C400 trades dual CAN for Ethernet and loses 8051 binary compatibility, while ST7FLITE52K4 abandons 8051 architecture entirely and halves CAN capacity - making DS80C390-FCR uniquely suited for legacy-code-reuse scenarios demanding two deterministic CAN domains.
Availability
DS80C390-FCR is available at Aetrix Electronics and suitable for industrial motion control, factory automation gateways, and agricultural telematics requiring stable component supply across extended product lifecycles.
Supply support for DS80C390-FCR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (acquired by Analog Devices in 2021) is a semiconductor company specializing in high-performance analog and mixed-signal ICs for industrial, medical, and communications applications.
The DS80C390-FCR belongs to Maxim's high-speed 8051 microcontroller family, designed specifically for deterministic real-time control in CAN-based industrial systems where legacy firmware reuse and EMI-constrained environments are critical.
FAQ
What is the maximum crystal frequency supported by the DS80C390-FCR?
The DS80C390-FCR supports a maximum crystal frequency of 40MHz. This enables an effective instruction execution speed of approximately 100MHz due to its 4-clock-cycle-per-machine-cycle architecture - three times faster than standard 8051 cores at the same crystal frequency. The internal frequency multiplier allows operation at full speed with lower crystal frequencies to reduce electromagnetic interference.
Does the DS80C390-FCR include internal flash or ROM memory?
No, the DS80C390-FCR does not contain internal flash or ROM. It features 4kB of internal SRAM that can be configured as program memory, data memory, or stack space - but external program memory must be used since the EA pin is hardwired to GND for external access. Firmware is loaded into external ROM or Flash, while the 4kB SRAM serves as high-speed working memory.
How many CAN interfaces does the DS80C390-FCR provide, and what protocol versions are supported?
The DS80C390-FCR integrates two independent full-function CAN 2.0B controllers. Each supports both standard (11-bit) and extended (29-bit) identifier formats, 15 configurable message objects, and higher-layer protocols including DeviceNet™ and SDS. Both controllers operate concurrently without CPU overhead, enabling true dual-network autonomy in distributed control systems.
What package type and pin count does the DS80C390-FCR use?
The DS80C390-FCR uses a 64-pin LQFP (Leadless Quad Flat Package) with 0.5mm lead pitch. This surface-mount package provides thermal and electrical performance suitable for industrial PCBs, and differs from the 68-pin PLCC variants (e.g., DS80C390-QCR) in footprint, reflow compatibility, and mechanical robustness.
Is the DS80C390-FCR 8051 instruction-set compatible, and what enhancements does it offer?
Yes, the DS80C390-FCR is fully 80C52 instruction-set compatible, ensuring binary-level compatibility with existing 8051/8052 firmware. Enhancements include a 4-clock-cycle machine cycle (vs. 12), hardware 16/32-bit math accelerator, dual CAN 2.0B controllers, two full-duplex UARTs, and configurable 22-bit memory addressing - all while maintaining register-level and interrupt-vector compatibility.
DS80C390-FCR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 64-LQFP
- Series:
- 80C
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- 8051
- Core Size:
- 8-Bit
- Speed:
- 40MHz
- Connectivity:
- CANbus, EBI/EMI, SIO, UART/USART
- Peripherals:
- Power-Fail Reset, WDT
- Number of I/O:
- 32
- Program Memory Size:
- -
- Program Memory Type:
- ROMless
- EEPROM Size:
- -
- RAM Size:
- 4K x 8
- Voltage - Supply (Vcc/Vdd):
- 3.85V ~ 5.5V
- Data Converters:
- -
- Oscillator Type:
- External
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
DS80C390-FCR FAQ
1.How can I place an order for DS80C390-FCR through Aetrix?
Please submit a Request for Quotation (RFQ) for DS80C390-FCR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for DS80C390-FCR reliable?
The price and inventory of DS80C390-FCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS80C390-FCR is usually 5 days.
3.What payment methods are accepted for DS80C390-FCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS80C390-FCR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS80C390-FCR?
DS80C390-FCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS80C390-FCR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for DS80C390-FCR?
For technical support, including DS80C390-FCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS80C390-FCR requirements.
6.How does Aetrix verify that DS80C390-FCR is sourced from the original manufacturer or authorized distributors?
All DS80C390-FCR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DS80C390-FCR meets industry standards.
7.What is the process for return or replacement of DS80C390-FCR?
All DS80C390-FCR units undergo pre-shipment inspection (PSI). If there is an issue with DS80C390-FCR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The DS80C390-FCR part is unused and in its original packaging.
Return procedure for DS80C390-FCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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