Analog Devices Inc./Maxim Integrated DS80C411-FNY+

Overview

DS80C411-FNY+ from Maxim Integrated is a high-performance 8051-based network microcontroller integrating a 10/100 Ethernet MAC, optional CAN 2.0B controller, 1-Wire Master, three hardware serial ports, and 64 I/O pins. It features 64KB on-chip SRAM, a full ROM-resident TCP/IP stack (IPv4/IPv6), and executes instructions in 54ns at 75MHz - enabling real-time industrial Ethernet-to-CAN gateway applications.

For engineers reviewing the DS80C411-FNY+ datasheet, DS80C411-FNY+ pinout, DS80C411-FNY+ application, or DS80C411-FNY+ equivalent, key selection criteria include its dual-supply operation (VCC3 = 3.0–3.6V, VCC1 = 1.62–1.98V), 100-pin LQFP package, integrated network stack with up to 32 concurrent TCP connections, and support for Magic Packet® wake-up in ultra-low-power sleep mode.

Technical Context

The DS80C411-FNY+ implements a flat 24-bit address space supporting up to 16MB contiguous memory, with four auto-increment/decrement data pointers optimized for high-speed memory transfers. Its hardware math accelerator delivers 16/32-bit multiply/divide and normalization operations independent of the CPU core.

Network functionality is implemented via a flexible IEEE 802.3 MII/ENDEC interface supporting both 10Mbps and 100Mbps PHYs, with 8KB on-chip Tx/Rx packet buffer memory and hardware multicast/broadcast filtering including VLAN support. The integrated 1-Wire Master supports standard and overdrive timing modes with programmable long-line compensation.

Key Specifications

Pinout & Package

DS80C411-FNY+ is housed in a 100-lead LQFP package (14mm × 14mm, 0.5mm pitch) with exposed thermal pad. Pin functions are defined across eight bidirectional 8-bit ports (P0–P7), plus dedicated Ethernet (MDC, MDIO, TXD[3:0], RXD[3:0], CRS, COL, etc.), CAN (CANRX, CANTX), 1-Wire (OW, OWSTP), and system control (RST, XTAL1, ALE, PSEN) signals.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar network microcontroller applications.

Compared with DS80C411-FNY+, DS80C410-FNY+ offers identical performance and Ethernet capability but omits CAN hardware - making it a cost-optimized alternative for non-CAN systems; LPC1769FBD100 provides greater general-purpose flexibility but demands external components and custom TCP/IP porting, increasing time-to-market and BOM complexity.

Availability

DS80C411-FNY+ is available at Aetrix Electronics and suitable for industrial automation, remote data-collection equipment, and transaction/payment terminals requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.

Supply support for DS80C411-FNY+ 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 (now part of Analog Devices) designs precision analog, mixed-signal, and embedded processing solutions for industrial, automotive, and communications markets.

The DS80C411-FNY+ belongs to Maxim's high-speed network microcontroller product line, engineered specifically for embedded systems requiring integrated Ethernet, deterministic real-time I/O, and minimal external component count in space-constrained industrial environments.

FAQ

What is the maximum Ethernet throughput achievable with the DS80C411-FNY+?

The DS80C411-FNY+ Ethernet MAC supports up to 5Mbps sustained data transfer through its integrated TCP/IP stack under typical application loads. This figure reflects end-to-end throughput including protocol overhead, not raw MII bandwidth. Real-world performance depends on stack configuration, buffer allocation, and host processing load - the 8KB on-chip packet memory helps sustain throughput by minimizing CPU intervention during burst transfers.

Does the DS80C411-FNY+ require an external Ethernet PHY?

Yes, the DS80C411-FNY+ contains only the Media Access Controller (MAC) layer and requires an external IEEE 802.3-compliant PHY device. It supports both MII (for 100Mbps) and ENDEC (for 10Mbps) interfaces, allowing designers to select PHYs such as the DP83848 or LAN8720 based on speed, power, and feature requirements. The DS80C411-FNY+ provides all necessary control signals including MDC/MDIO for PHY register access.

How is the CAN controller enabled on the DS80C411-FNY+?

The CAN 2.0B controller in the DS80C411-FNY+ is implemented as an optional hardware block activated via fuse-bit programming during manufacturing. Units ordered as DS80C411-FNY+ include this feature enabled; it cannot be toggled in-system. The CANRX and CANTX pins are dedicated and functional only when the part is configured with CAN support - verification requires checking the device marking or ordering code against Maxim's official selector guide.

What power supply sequencing is required for DS80C411-FNY+?

The DS80C411-FNY+ requires monotonic ramp-up of VCC3 (3.0–3.6V) before VCC1 (1.62–1.98V), with no more than 100ms delay between rails reaching regulation. Violating this sequence may cause undefined reset behavior or latch-up. Power-fail detection thresholds are VRST3 = 2.76–3.05V and VRST1 = 1.47–1.63V - designers must ensure brown-out conditions trigger reset before either supply falls below its respective threshold.

Can the DS80C411-FNY+ boot directly from Ethernet without external flash memory?

Yes, the DS80C411-FNY+ supports network boot via DHCP and TFTP using its ROM-resident bootloader. Upon reset, it can acquire an IP address, locate a boot image on a TFTP server, and execute firmware directly from RAM - eliminating need for external nonvolatile memory. This capability requires proper network infrastructure and is commonly used for field firmware updates or zero-touch provisioning in distributed sensor networks.