PIC17C44-16/PQ - 16MHz 8-Bit OTP MCU, 16KB | Microchip
MPN: PIC17C44-16/PQ ✗ Akhir HidupPIC17C44-16/PQ Ringkasan
A microcontroller (MCU) is a single-chip computer that combines a CPU core, non-volatile program memory (ROM/Flash/EPROM), volatile data memory (RAM), and programmable I/O peripherals. The PIC17C44 belongs to Microchip's PIC17C family, an early high-end 8-bit RISC architecture positioned above the PIC16C and below the PIC18 generations. It uses a Harvard bus (separate program and data memory) with a 16-bit instruction word, which is the defining trait of the PIC17C family versus the 14-bit PIC16C and 12-bit PIC14C predecessors.
Key features of the PIC17C44-16/PQ include 33 single-cycle instructions plus 23 two-cycle branches/table reads, 16 level hardware stack, multiple timer/counter modules, synchronous/asynchronous serial port (USART), capture/compare/PWM peripherals, 33 digital I/O pins, and a commercial 0C to +70C operating temperature grade. Power consumption is managed via Run, Idle, and Sleep modes, with low-power Sleep current suitable for battery-backed designs.
Architecturally, the PIC17C44 uses Microchip's RISC instruction set tuned for deterministic single-cycle execution and bit-manipulation efficiency, supported by a wide 16-bit instruction bus and a dedicated hardware multiplier. The OTP program memory allows prototype-to-production deployment using the same silicon, with EPROM-windowed siblings for code development.
Typical applications include industrial motor control, HVAC actuators, security and alarm panels, point-of-sale terminals, instrumentation, and embedded control boards where deterministic 8-bit performance and Microchip ecosystem maturity outweigh the need for flash memory. Designers should budget 121 ns per instruction in real-time loops and use the USART plus CCP peripherals to offload the CPU. When designing with this device, evaluate firmware lifecycle (OTP requires a one-shot programming flow) and confirm the recommended modern replacement (PIC18F442) only if drop-in compatibility is not required, since the PIC18F family uses a different instruction set and is not code-compatible with PIC17C sources.
Alternatif penggantian untuk PIC17C44-16/PQ — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian PIC17C44-16/PQ (sama faktor bentuk dan footprint) — berbeda di dalam Package, Maximum Clock Frequency, Program Memory Size, Program Memory Type, Core Architecture.
PIC17C44T-16/PQ
✅ Drop-InKontak untuk harga
Lihat Datasheet →PIC17C44-25/PQ
✅ Drop-InKontak untuk harga
Lihat Datasheet →PIC17C44-16I/PQ
✅ Drop-InKontak untuk harga
Lihat Datasheet →PIC17C44-16/PQ Rating Maksimal & Karakteristik Listrik
| Core Architecture | PIC17C 8-bit RISC (Harvard) |
| Instruction Set Size | 58 single-word instructions |
| Instruction Cycle Time | 121 ns at 33 MHz; 4-cycle at 16 MHz |
| Frekuensi Bawah Maximum | 33 MHz (16 MHz for -16 speed grade) |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 16 KB (8K x 16 words) |
| Lebar Bus Data | 8 bits |
| I/O Pins | 33 digital I/O |
| Hardware Stack | 16 levels |
| Peripherals | Timers, USART, Capture/Compare/PWM |
| Suhu Kerja | 0C to +70C (commercial grade) |
| Paket | 44-MQFP (10x10 mm), Tray |
| Tipe Mounting | Surface Mount |
Konfigurasi Pin PIC17C44-16/PQ
| Pin produk 1 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| Pin produk 2 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| Pin produk 3 | RA2/AN2 — PORTA bit 2 / analog input 2 |
| Pin produk 4 | RA3/AN3 — PORTA bit 3 / analog input 3 |
| Pin produk 5 | RA4 — PORTA bit 4 |
| Pin produk 6 | RA5 — PORTA bit 5 |
| Pin produk 7 | RA6 — PORTA bit 6 |
| Pin produk 8 | RA7 — PORTA bit 7 |
| Pin produk 9 | OSC1 — Oscillator input |
| Pin produk 10 | OSC2 — Oscillator output |
| Pin produk 11 | VSS — Ground |
| Pin produk 12 | VDD — Positive supply |
| Pin produk 13 | RB0/INT — PORTB bit 0 / external interrupt |
| Pin produk 14 | RB1 — PORTB bit 1 |
| Pin produk 15 | RB2 — PORTB bit 2 |
| Pin produk 16 | RB3 — PORTB bit 3 |
| Pin produk 17 | RB4 — PORTB bit 4 |
| Pin produk 18 | RB5 — PORTB bit 5 |
| Pin produk 19 | RB6 — PORTB bit 6 / programming clock |
| Pin produk 20 | RB7 — PORTB bit 7 / programming data |
| Pin produk 21 | RC0 — PORTC bit 0 |
| Pin produk 22 | RC1 — PORTC bit 1 |
| Pin produk 23 | RC2/CCP1 — PORTC bit 2 / Capture-Compare-PWM 1 |
| Pin produk 24 | RC3/CCP2 — PORTC bit 3 / Capture-Compare-PWM 2 |
| Pin produk 25 | RC4 — PORTC bit 4 |
| Pin produk 26 | RC5 — PORTC bit 5 |
| Pin produk 27 | RC6/TX — PORTC bit 6 / USART transmit |
| Pin produk 28 | RC7/RX — PORTC bit 7 / USART receive |
| Pin produk 29 | RD0 — PORTD bit 0 |
| Pin produk 30 | RD1 — PORTD bit 1 |
| Pin produk 31 | RD2 — PORTD bit 2 |
| Pin produk 32 | RD3 — PORTD bit 3 |
| Pin produk 33 | RD4 — PORTD bit 4 |
| Pin produk 34 | RD5 — PORTD bit 5 |
| Pin produk 35 | RD6 — PORTD bit 6 |
| Pin produk 36 | RD7 — PORTD bit 7 |
| Pin produk 37 | RE0 — PORTE bit 0 |
| Pin produk 38 | RE1 — PORTE bit 1 |
| Pin produk 39 | RE2 — PORTE bit 2 |
| Pin produk 40 | MCLR — Master clear reset (active low) |
| Pin produk 41 | T0CKI — Timer 0 clock input |
| Pin produk 42 | T1CKI — Timer 1 clock input |
| Pin produk 43 | NC — Not connected (per datasheet) |
| Pin produk 44 | VSS — Ground |
Aplikasi Umum
PIC17C44-16/PQ cocok untuk 6 aplikasis: Industrial Motor Control, HVAC Actuator Controllers, Security and Alarm Panels, Point-of-Sale Terminals, Test and Measurement Instrumentation, Embedded Control Boards.
Industrial Motor Control
The PIC17C44-16/PQ fits industrial motor control because its 16 MHz clock delivers an 8.25 MIPS deterministic instruction rate with 121 ns cycle, allowing precise PWM generation and quadrature encoder capture via the on-chip CCP modules. The 33 digital I/O pins handle direction lines, brake logic, fault inputs, and H-bridge gate drive interfaces without external glue logic. Industrial-grade variants (-16I/PQ) extend operation to -40C to +85C for factory-floor enclosures. Designers should drive the MOSFET gate signals directly from the CCP PWM outputs at frequencies up to tens of kHz and verify shoot-through protection in firmware. The OTP memory locks the final tuning parameters, an advantage when motor-control firmware is production-frozen.
Direkomendasikan
HVAC Actuator Controllers
The PIC17C44-16/PQ suits HVAC damper and valve actuator controllers thanks to its 16 KB OTP program memory, which comfortably holds PID control loops, scheduling tables, and Modbus ASCII/RTU handlers using the on-chip USART. The 0C-70C commercial temperature grade covers conditioned mechanical rooms, while the industrial -16I variant handles rooftop or basement cabinets. The 121 ns instruction cycle closes the PID loop at sub-millisecond rates, keeping valve position stable under load disturbances. Use the USART to interface with a building automation bus and the timers to generate servo PWM outputs. Verify watchdog timer reset flow before deployment of unattended equipment.
Direkomendasikan
Security and Alarm Panels
The PIC17C44-16/PQ supports security alarm panels with its 33 I/O pins accepting multiple zones of PIR sensors, door contacts, and keypad matrices without external I/O expanders. The 16 KB OTP program memory holds zone tables, dialer protocols (Contact ID, SIA), and event logs. The 121 ns cycle time lets the firmware poll all zones and debounce inputs at high rates, reducing false alarms. The USART interfaces to a cellular or PSTN dialer module, while CCP timers drive piezo sirens and strobe outputs. Use the hardware stack and Sleep mode to minimize standby power for battery-backed panels.
Direkomendasikan
Point-of-Sale Terminals
The PIC17C44-16/PQ integrates well into legacy point-of-sale terminals where deterministic 8-bit control, keypad scanning, and receipt-printer interfaces are required. The CCP peripherals drive stepper motors for the printer head, while the USART communicates with the cash-drawer kicker and external magnetic-stripe readers. The 16 KB OTP stores menu state machines and printer font tables. The 121 ns instruction cycle maintains responsive user I/O under multitask scheduling. When designing with this part, evaluate whether the receipt printer and card reader protocols need upgrading; if so, consider migrating to a PIC18F or PIC24F for newer interfaces.
Direkomendasikan
Test and Measurement Instrumentation
The PIC17C44-16/PQ is suitable for bench-top test and measurement front panels where the 33 I/O lines drive seven-segment displays, rotary encoders, function keys, and analog MUX select lines. The USART streams measurement data to a host PC, while CCP modules time gate signals and trigger events. The 8.25 MIPS throughput keeps display multiplexing flicker-free and processes encoder inputs in real time. Industrial temperature variant -16I/PQ operates inside unheated laboratories. Designers should isolate analog front-ends with op-amps fed by clean supplies, since PIC17C44 lacks an internal ADC and an external ADC such as the MCP3201 is required.
Direkomendasikan
Embedded Control Boards
The PIC17C44-16/PQ functions as the supervisory MCU on embedded control boards managing power sequencing, watchdog supervision, and inter-processor communication via USART or SPI. The 16 KB OTP holds boot loaders, fault logs, and communication stacks for sub-processor handshaking. The 121 ns instruction cycle lets the firmware detect fault conditions and assert reset lines within microseconds, protecting downstream ASICs. The Sleep mode drops quiescent current to a few microamps, suitable for battery-backed boards. Industrial -16I variant is recommended for harsh embedded environments; engineers should preserve the JTAG/ICSP test points for field diagnostics.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk PIC17C44-16/PQ — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | PIC17C44T-16/PQ | PIC17C44-25/PQ | PIC17C44-16I/PQ | PIC17C44-16/L | PIC17C44-16/PT |
|---|---|---|---|---|---|---|
| Package | 44-MQFP (10x10) | 44-MQFP (10x10) - same | 44-MQFP (10x10) - same | 44-MQFP (10x10) - same | 44-PLCC - different footprint | 44-TQFP - different footprint |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Maximum Clock Frequency | 16 MHz | 16 MHz - same | 25 MHz - +56% | 16 MHz - same | 16 MHz - same | 16 MHz - same |
| Program Memory | 16 KB OTP | 16 KB OTP - same | 16 KB OTP - same | 16 KB OTP - same | 16 KB OTP - same | 16 KB OTP - same |
| Operating Temperature | 0C to +70C (commercial) | 0C to +70C - same | 0C to +70C - same | -40C to +85C (industrial) - wider | 0C to +70C - same | 0C to +70C - same |
| I/O Pins | 33 | 33 - same | 33 - same | 33 - same | 33 - same | 33 - same |
| Instruction Cycle | 121 ns at 16 MHz | 121 ns - same | 160 ns at 25 MHz - slower per cycle, higher throughput | 121 ns - same | 121 ns - same | 121 ns - same |
| Program Memory Type | OTP EPROM | OTP EPROM - same | OTP EPROM - same | OTP EPROM - same | OTP EPROM - same | OTP EPROM - same |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
Diferensiator Kunci
- Tape-and-reel variant enables high-volume SMD assembly (vsPIC17C44T-16/PQ)
- 25 MHz speed grade offers 56% more clock headroom (vsPIC17C44-25/PQ)
- Industrial temperature variant for harsh environments (vsPIC17C44-16I/PQ)
Catatan Desain
PIC17C44 program memory is OTP EPROM and CANNOT be erased or rewritten once programmed. Production firmware must be fully verified on EPROM-windowed PIC17C44JW ceramic units or via an in-circuit emulator before committing to OTP units. Any firmware bug discovered after programming locks the device into a scrap part.
Estimated: the PIC17C44-16/PQ supply current in Run mode at 16 MHz with all peripherals enabled is on the order of tens of milliamperes from a single +5 V rail. Place a 100 nF decoupling capacitor within 5 mm of each VDD/VSS pin pair and a bulk 10 uF tantalum at the board supply input. Use Sleep mode for battery-backed designs to drop quiescent current to a few microamperes.
The 44-MQFP has gull-wing leads on a 0.8 mm pitch and requires precise reflow profile (peak ~245C, 60 s above 220C). Maintain at least 0.2 mm clearance between MQFP leads and adjacent traces for clean solder joints; route oscillator traces short and shield them from PWM outputs. Provide a clean ground pour under the package to reduce EMI on the 16 MHz oscillator.
Informasi Konformitas
Compliance status not present in verified distributor data; confirm with specific distributor lot before placing RoHS-restricted orders. AEC-Q100 not applicable for commercial-grade legacy MCU.
