ST10F276Z5Q3
ST10F276Z5Q3 - 64MHz 16-bit MCU, 832KB Flash, 144-PQFP | STMicroelectronics
The STMicroelectronics ST10F276Z5Q3 is a high-performance 16-bit single-chip CMOS microcontroller from the ST10 family, delivering up to 32 MIPS at a 64 MHz CPU clock with a 50 ns instruction cycle time. It integrates a 16-bit CPU with a 4-stage pipeline, an enhanced boolean bit-manipulation unit, a single-cycle context switcher, and a Multiply/Accumulate (MAC) DSP extension featuring 16-bit multiplication and a 40-bit accumulator. The device is housed in a 144-pin PQFP package measuring 28 x 28 mm and integrates 832 Kbytes of on-chip Flash memory alongside 68 Kbytes of on-chip RAM.
A 16-bit microcontroller (MCU) is a programmable processor with a 16-bit data path, ALU, and register file. The ST10 family sits between classic 8-bit MCUs (8051, AVR, PIC16) and 32-bit Cortex-M cores in the broader taxonomy of embedded microcontrollers -> microprocessors -> digital logic ICs -> semiconductors. 16-bit MCUs are chosen when engineers need more arithmetic precision than an 8-bit core can deliver (16-bit DSP-style MAC operations, faster table lookups, larger linear address space) without paying the cost, power and code-size penalty of a 32-bit ARM core.
Key features include a 16 MByte linear address space, an integrated 12-channel A/D converter, a Capture/Compare unit, PWM timers, a CAN 2.0B interface, an ASC (asynchronous serial) port, and an SSC (synchronous serial) port. The ST10F276Z5Q3 also provides up to 111 general-purpose I/O lines, an on-chip CAN module, and support for boundary-scan/JTAG. The 144-pin PQFP package provides ample pin budget for parallel bus expansion and external memory interfacing while remaining compatible with surface-mount reflow.
Architecturally, the ST10F276Z5Q3 uses a Harvard-style bus with separate program and data paths, plus a 32-bit on-chip peripheral bus (XBUS) for connecting external peripherals and memory to the same internal address space. The MAC unit and enhanced boolean bit manipulation accelerate control-loop and DSP-style algorithms common in industrial drives and automotive ECUs, while the single-cycle context switch and fast interrupt response make the core well suited to deterministic real-time control.
Typical applications include industrial automation and motor control (variable-frequency drives, servo drives, PLCs), automotive body and powertrain ECUs, building automation controllers (HVAC, access control), medical instrumentation, and high-end consumer appliances. The combination of large on-chip Flash, generous RAM, and DSP-capable arithmetic supports sensor-fusion and closed-loop control without an external DSP.
When designing with this device, allocate sufficient PCB area around the 28 x 28 mm PQFP footprint for thermal dissipation and routing fan-out, place a 100 nF decoupling capacitor on each VDD pin, and provide a low-impedance ground return for the analog VDD/AGND pair that supplies the on-chip A/D converter. Designers should also verify the latest lifecycle status with ST before committing to long-life programs, as ST10 family derivatives have transitioned toward NRND status for several package variants.
This page synthesizes distributor pricing, datasheet specifications, package pinout, drop-in same-family alternatives and practical design notes not found in the manufacturer datasheet alone.
USD $18.75
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