TMC8462A-BA - EtherCAT Slave Controller, 2x 100M PHY, 121-BGA | ADI
MPN: TMC8462A-BA ✓ NakahandaTMC8462A-BA Ulas
An EtherCAT slave controller is the silicon block responsible for handling the deterministic EtherCAT protocol on behalf of the application processor, offloading real-time mailbox and cyclic datagram processing so the host MCU can focus on the motion or I/O task itself. The TMC8462A-BA sits inside an industrial fieldbus hierarchy above the 100BASE-TX PHY and below the application MCU, and ultimately below higher-level Industrial Ethernet protocols such as PROFINET, EtherNet/IP, and CIP Motion - it is the lowest layer that interprets EtherCAT frames natively. Compared with discrete EtherCAT slave designs, it eliminates an external PHY, an external auxiliary regulator, and a discrete 24V-tolerant I/O buffer.
Key features of the TMC8462A-BA include two integrated 100-Mbit Ethernet PHYs that drive a daisy-chained EtherCAT port 0/port 1 topology, a built-in dual switch-mode power supply block, eight high-voltage (24V-tolerant) digital I/Os for industrial sensors and actuators, a watchdog timer, a PWM unit, and SPI/I2C master interfaces. The integrated PHYs remove the need for external 100BASE-TX magnetics-side circuitry, and 24V-tolerant I/Os allow direct connection to industrial sensors without a separate level shifter.
Architecturally, the TMC8462A-BA combines the EtherCAT Processing Unit (EPU), two 100BASE-TX PHYs, an Ethernet MAC, a digital I/O bank, and a power management block on a single die. The internal switch-mode regulator generates the lower rails required for the digital core and PHYs from the incoming 5-35 V bus, simplifying the bill of materials and reducing PCB area versus a discrete EtherCAT solution.
Typical applications for the TMC8462A-BA include industrial motor drives, stepper and servo controllers using EtherCAT, distributed I/O modules, sensor/actuator nodes, robotic sub-systems, and CNC peripherals where EtherCAT slave controllers are required. It is also used as the slave side of the TMC8462A-EVAL evaluation kit.
When designing with the TMC8462A-BA, ensure the upstream 24V supply is decoupled with low-ESR bulk capacitance near the BGA and that MDI traces to the magnetics are length-matched, as required by 100BASE-TX. The host SPI clock should not exceed the datasheet maximum, and unused high-voltage I/Os must be tied to a defined logic level to avoid floating inputs in the field.
This page synthesizes distributor pricing, drop-in same-package variants, datasheet PDF location, and application design notes not all collected in one place on the manufacturer datasheet alone.
Mga alternatibo na pwedeng ilagay na TMC8462A-BA — parehas na package, pin-to-pin na katugmang. Hindi kasama ang mga bahagi ng iba't-ibang package na nangangailangan ng pagpapaayos ng PCB.
TMC8460-BA
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
TMC8461-BA
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
TMC8462A-BA Mga Spesipikasyon
| Product Type | EtherCAT Slave Controller |
| Volte ng Pagbibigay | 5 V to 35 V |
| Integrated Ethernet PHYs | 2 x 100-Mbit (100BASE-TX) |
| Host Interfaces | SPI, I2C, MII |
| High-Voltage Digital I/Os | 8 x 24V-tolerant inputs/outputs |
| Integrated Power Supply | Dual switch-mode regulator |
| On-chip Peripherals | Watchdog, PWM, SPI/I2C master |
| Protocol Support | EtherCAT slave (deterministic, real-time) |
| Packhaging | 121-ball BGA, 9 mm x 9 mm |
| Uri ng Pagpapasok | Surface Mount |
| Temperature na Operasyon | -40C to +85C (industrial) |
| Tindminan RoHS | Compliant |
| Datasheet Revision | V1.10 (2022-Aug-29) |
| Evaluation Board | TMC8462A-EVAL |
| Manufacturer | Analog Devices (formerly Trinamic Motion Control) |
Gabay sa Pin Configuration ng TMC8462A-BA 121-ball bga, 9 mm x 9 mm
Pin configuration para sa TMC8462A-BA (121-ball bga, 9 mm x 9 mm package). Ang pagnunumero ng pin, mga function, at connection diagram ay tinukoy sa datasheet ng manufacturer. Sumangguni dito para sa eksaktong footprint at mga alituntunin sa soldering.
Wala ng detalyadong pinout data na magagamit para sa TMC8462A-BA.
Sumangguni sa datasheet para sa buong pin configuration.
Tipikal na mga Gamit
TMC8462A-BA ay nararapat para sa 6 aplikasyons: Industrial Stepper Drive EtherCAT Node, Distributed I/O Module (EtherCAT Slave), Robotic Sub-system (Cobot / SCARA arm), CNC Peripheral (Spindle / Tool Changer), Sensor / Actuator Fieldbus Node, EVAL / Reference Design Bring-up.
Industrial Stepper Drive EtherCAT Node
The TMC8462A-BA is a natural fit for industrial stepper and servo drives that need EtherCAT connectivity, because its 24V-tolerant digital I/Os can directly interface with industrial limit-switch and enable inputs without an external level shifter. The integrated dual 100-Mbit PHYs allow the drive to be daisy-chained on the EtherCAT bus without an external PHY, while the on-chip watchdog and PWM unit coordinate with a host MCU running the motion loop. Placed on a 4-layer PCB with proper MDI trace matching per 100BASE-TX, the part supports typical stepper cycle rates and EtherCAT distributed-clock synchronization as required by the CAN-over-EtherCAT (CoE) profile.
Inirekomenda
Distributed I/O Module (EtherCAT Slave)
Compact EtherCAT digital and analog I/O terminals benefit from the TMC8462A-BA's combination of two integrated PHYs and 24V-tolerant I/Os in a single 121-BGA package, reducing part count versus discrete PHY + controller + level-shifter designs. The host SPI channel lets a small Cortex-M0 class MCU poll mailbox status and update outputs synchronously to the EtherCAT distributed clock. Placed in a DIN-rail-mounted fieldbus terminal, the part supports typical industrial I/O refresh rates (sub-millisecond) and is qualified for the -40C to +85C temperature range required inside sealed cabinets.
Inirekomenda
Robotic Sub-system (Cobot / SCARA arm)
Cobot and SCARA arm controllers benefit from real-time EtherCAT networking that the TMC8462A-BA implements directly on-chip. Its on-chip SPI/I2C master blocks let the controller read joint encoders and drive local servo amplifiers over a single host SPI connection, eliminating a backplane processor in each joint node. In a typical 6-axis cobot, six TMC8462A-BA-based joint nodes daisy-chain on a single EtherCAT segment with deterministic cycle times measured in the hundreds of microseconds, well within the CoE cycle envelope.
Inirekomenda
CNC Peripheral (Spindle / Tool Changer)
CNC peripheral nodes such as spindle controllers, tool changers, and coolant valves use EtherCAT for deterministic response, and the TMC8462A-BA's 24V I/O bank lets it directly drive 24V solenoids and read 24V proximity sensors without external buffers. The integrated dual switch-mode regulator derives internal rails from the 24V CNC backplane, simplifying power-tree design. Placed near the spindle VFD, the part's watchdog and PWM peripherals can be repurposed for local closed-loop control as well as EtherCAT communication.
Inirekomenda
Sensor / Actuator Fieldbus Node
Stand-alone EtherCAT sensor and actuator nodes - pressure transmitters, valve manifolds, and flow meters - benefit from the TMC8462A-BA's compact single-chip integration, where the dual-PHY chain-on feature lets multiple nodes share a single EtherCAT segment without an external switch. With a Cortex-M0 host attached to the SPI bus, the part handles all protocol processing while the host does sensor signal conditioning. Per the datasheet typical performance, distributed clock jitter stays below the +/-1us required by most process-control sensors, and the on-chip watchdog adds safety integrity against host lock-ups.
Inirekomenda
EVAL / Reference Design Bring-up
Engineers validating EtherCAT slave designs use the TMC8462A-EVAL board with a TMC8462A-BA fitted to bring up a real EtherCAT node in minutes, exercising all datasheet features including PDO/SDO mailbox, distributed clocks, and the on-chip SPI/I2C master. The Eselsbruecke bridge board exposes all host signals for oscilloscope probing. This application is the canonical first step before designing a custom PCB, and is documented in the Analog Devices evaluation kit landing page.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for TMC8462A-BA — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto | TMC8460-BA | TMC8461-BA |
|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices |
| Package | 121-BGA (9x9 mm) | 121-BGA (same) | 121-BGA (same) |
| Integrated 100-Mbit PHYs | 2 (dual PHY) | 1 (single PHY) | 1 (single PHY) |
| EtherCAT Support | Yes (slave controller) | Yes | Yes |
| Supply Voltage | 5V to 35V | 5V to 35V | 5V to 35V |
| 24V-Tolerant I/Os | Yes (integrated) | Yes | Yes (reduced count) |
| On-chip Power Management | Dual switch-mode regulator | Dual switch-mode regulator | Dual switch-mode regulator |
| Host Interface | SPI / I2C / MII | SPI / I2C / MII | SPI / I2C |
Pangunahing mga Pagkakaiba
- Dual integrated 100-Mbit Ethernet PHYs eliminate external PHY BOM (kumpara saTMC8460-BA)
- 24V-tolerant digital I/O bank on-chip (kumpara saTMC8461-BA)
- Integrated dual switch-mode regulator (kumpara saDiscrete EtherCAT solutions)
Talaan ng Disenyo
The 121-ball BGA requires a 4-layer PCB with a continuous ground plane and dedicated power planes for the analog and digital rails. Place the 100BASE-TX MDI traces to the magnetics on the top layer with length matching (per 100BASE-TX) and route them over a continuous ground pour to keep return paths short. Place the 24V bulk decoupling capacitor as close as physically possible to the BGA supply balls; this is critical because the on-chip switch-mode regulator's switching transients will otherwise couple back into the PHY analog rails.
Estimated: with the internal switch-mode regulator operating at full load (drawing ~500 mA of internal current), total on-die dissipation is roughly 1.5W at 24V input. On the 121-BGA 9x9 mm package with the recommended 4-layer thermal via array under the BGA, theta_JA is on the order of 20 C/W, giving about 30C rise above ambient. For enclosed industrial cabinets at 70C ambient, junction temperature stays within the 85C industrial limit. Adding a thermal pad cuts dissipation margin further; confirm with the manufacturer's thermal model in the datasheet before designing sealed enclosures.
Do not route SPI traces longer than 50 mm without a series terminator; signal integrity at the SPI clock the host MCU drives into the TMC8462A-BA must hold a clean edge. Unused 24V-tolerant I/Os MUST be tied to a defined logic level (either GND through 10k or to a known logic rail) - floating inputs at industrial ambient temperatures can latch the I/O bank. Finally, do not assume drop-in compatibility between the TMC8462A-BA and the Beckhoff ET1100 - they share functional intent but have completely different pinouts and require a PCB redesign.
Impormasyon ng Pagsunod sa Kautusan
RoHS and REACH compliance per Analog Devices product page. Not AEC-Q100 qualified - this is an industrial-grade part, not automotive-grade. Halogen-free status not explicitly listed in provided web data.
