PIC17C44T-16/PQ - 16MHz 8-bit OTP MCU, 44-MQFP | Microchip
部品番号: PIC17C44T-16/PQ ✗ 生産終了| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $8.95 | $8.95 |
| 10 | $7.85 | $78.50 |
| 100 | $6.95 | $695.00 |
| 500 | $6.2 | $3,100.00 |
| 1,000 | $5.65 | $5,650.00 |
PIC17C44T-16/PQ 概要
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, RAM, and peripheral I/O on one die. The PIC® 17C family is one of Microchip's high-performance 8-bit lines, with the PIC17C44 positioned as a member of that OTP-programmable subfamily. Within the broader taxonomy, PIC17C44 sits in the hierarchy: PIC17C44 -> PIC® 17C family -> 8-bit microcontroller -> microcontroller -> embedded controller -> semiconductor device. The 'T' suffix indicates tape-and-reel packaging, and '16' denotes the 16 MHz maximum clock speed. The architecture delivers 8.25 MIPS (121 ns instruction execution) across 58 single-word instructions per the manufacturer.
Key features of the PIC17C44T-16/PQ include an 8-level deep hardware stack, multiple interrupt sources, a versatile 8-bit timer/counter, and a USART peripheral for asynchronous serial communication. The 33 I/O pins are arranged across multiple ports with individually configurable direction registers, and the device supports both polled and interrupt-driven I/O architectures. The OTP program memory enables fast prototyping while preserving one-time field programmability for production units.
Typical applications for the PIC17C44T-16/PQ include industrial control systems, automotive body and chassis electronics, embedded sensor hubs, motor control front-ends, and legacy equipment that requires a pin-compatible upgrade path. Designers also use the PIC17C44 in user-interface controllers, keypad scanners, and small-form-factor appliances where 8-bit performance and modest memory suffice. The 44-pin MQFP footprint is shared across multiple PIC17C4x variants, enabling design reuse across a product family.
When migrating from this part, note that Microchip has explicitly recommended the PIC18F442 as a newer alternative - users requiring a wider tool ecosystem (MPLAB X, XC8 compiler) and Flash memory should consider the PIC18 migration. Existing PIC17C44 designs are typically preserved by sourcing drop-in-compatible PIC17C44 variants with the same MQFP-44 footprint.
This page synthesizes distributor stock levels, drop-in PIC17C4x family replacements, MQFP-44 pinout detail, and design notes not found in the manufacturer datasheet alone.
ドロップイン代替品: PIC17C44T-16/PQ — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: PIC17C44T-16/PQ （同一形状・フットプリント） — 相違点: Package, Maximum Clock Frequency, Program Memory Size, Program Memory Type, Core Architecture.
クイック比較ツール — 並列比較する代替部品を選択:
PIC17C44-16/PQ
✅ ドロップイン✓ 在庫あり
$10.34 / 個
データシートを見る →PIC17C44-16I/PQ
✅ ドロップイン✓ 在庫あり
$15.5 / 個
データシートを見る →PIC17C44-25I/PQ
✅ ドロップイン✓ 在庫あり
$9.85 / 個
データシートを見る →PIC17C44-16I/PT
✅ ドロップイン✓ 在庫あり
$4.65 / 個
データシートを見る →PIC17C42A-33I/PQ
✅ ドロップイン✓ 在庫あり
$11.4 / 個
データシートを見る →PIC17C44T-16/PQ 最大定格＆電気的特性
| Core Architecture | PIC 8-bit RISC |
| Family | PIC® 17C |
| CPU Core Speed | 16 MHz |
| Performance | 8.25 MIPS (121 ns instruction execution) |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 16 KB (8K x 16) |
| RAM Size | 454 bytes (454 x 8) |
| データバス幅 | 8-bit |
| Number of I/O Pins | 33 programmable I/O |
| Supply Voltage (Vdd) | 4.5 V to 6.0 V |
| パッケージ | 44-MQFP (10x10 mm) |
| 実装タイプ | Surface Mount |
| Packaging | Tape & Reel (T suffix) |
| Instruction Set | 58 single-word instructions |
| Hardware Stack | 8-level deep |
| Communication Peripherals | USART (asynchronous serial) |
| Timers | 8-bit Timer/Counter (multiple) |
PIC17C44T-16/PQ ピン構成
| ピン 1 | RA0/AN0 — PORTA bit 0 / analog input |
| ピン 2 | RA1/AN1 — PORTA bit 1 / analog input |
| ピン 3 | RA2/AN2 — PORTA bit 2 / analog input |
| ピン 4 | RA3/AN3 — PORTA bit 3 / analog input |
| ピン 5 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| ピン 6 | RA5/SS — PORTA bit 5 / SPI slave select |
| ピン 7 | VSS — Ground reference |
| ピン 8 | OSC1/CLKIN — Crystal oscillator input / external clock |
| ピン 9 | OSC2/CLKOUT — Crystal oscillator output / clock out |
| ピン 10 | RC0/T1OSO — PORTC bit 0 / Timer1 oscillator output |
| ピン 11 | RC1/T1OSI — PORTC bit 1 / Timer1 oscillator input |
| ピン 12 | RC2/CCP1 — PORTC bit 2 / Capture-Compare-PWM1 |
| ピン 13 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| ピン 14 | RD0/PSP0 — PORTD bit 0 / parallel slave port |
| ピン 15 | RD1/PSP1 — PORTD bit 1 / parallel slave port |
| ピン 16 | RD2/PSP2 — PORTD bit 2 / parallel slave port |
| ピン 17 | RD3/PSP3 — PORTD bit 3 / parallel slave port |
| ピン 18 | RD4/PSP4 — PORTD bit 4 / parallel slave port |
| ピン 19 | RD5/PSP5 — PORTD bit 5 / parallel slave port |
| ピン 20 | RD6/PSP6 — PORTD bit 6 / parallel slave port |
| ピン 21 | RD7/PSP7 — PORTD bit 7 / parallel slave port |
| ピン 22 | VSS — Ground reference |
| ピン 23 | VDD — Positive supply (4.5 V to 6.0 V) |
| ピン 24 | RB0/INT — PORTB bit 0 / external interrupt |
| ピン 25 | RB1 — PORTB bit 1 |
| ピン 26 | RB2 — PORTB bit 2 |
| ピン 27 | RB3 — PORTB bit 3 |
| ピン 28 | RB4 — PORTB bit 4 |
| ピン 29 | RB5 — PORTB bit 5 |
| ピン 30 | RB6 — PORTB bit 6 |
| ピン 31 | RB7 — PORTB bit 7 |
| ピン 32 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| ピン 33 | RC5/SDO — PORTC bit 5 / SPI data out |
| ピン 34 | RC6/TX/CK — PORTC bit 6 / USART TX / clock |
| ピン 35 | RC7/RX/DT — PORTC bit 7 / USART RX / data |
| ピン 36 | RE0/RD — PORTE bit 0 / parallel port read strobe |
| ピン 37 | RE1/WR — PORTE bit 1 / parallel port write strobe |
| ピン 38 | RE2/CS — PORTE bit 2 / parallel port chip select |
| ピン 39 | VDD — Positive supply (4.5 V to 6.0 V) |
| ピン 40 | VSS — Ground reference |
| ピン 41 | NC — Not connected (per datasheet) |
| ピン 42 | NC — Not connected (per datasheet) |
| ピン 43 | NC — Not connected (per datasheet) |
| ピン 44 | MCLR/VPP — Master clear reset / programming voltage |
主な用途
PIC17C44T-16/PQ の用途: 6 件s: Industrial Control and Sensor Aggregation, Automotive Body and Chassis Electronics, User Interface and Keypad Controllers, Motor Control Front-End (Brushed DC and Stepper), Legacy Equipment Sustainment and Aftermarket, Small Appliance and Consumer Embedded Control.
Industrial Control and Sensor Aggregation
The PIC17C44T-16/PQ suits industrial control panels where its 33 I/O pins aggregate multiple 4-20 mA loops, switch inputs, and relay outputs through parallel I/O expansion. Its 16 MHz core delivers 8.25 MIPS, which is sufficient for PID loops scanning 8-16 channels at 100 Hz with deterministic latency. The 454-byte RAM holds the runtime stack, scan tables, and last-value buffers for HMI updates. Designers use the USART to bridge the aggregated data to a host PLC or industrial Ethernet gateway. The 4.5-6 V supply aligns with 5 V industrial backplanes, simplifying power-tree design.
おすすめ
Automotive Body and Chassis Electronics
Within automotive body controllers, the PIC17C44T-16/PQ drives seat-position memories, mirror-fold actuators, and lighting multiplexers where 33 I/O pins and a 16 MHz core are sufficient. The OTP program memory suits fixed-function body modules that never need firmware updates. Its 4.5-6 V supply range tolerates automotive cranking transients when paired with proper supply decoupling. The USART bridges to body-control LIN or K-Line networks. Designers should verify AEC-Q100 qualification status with the latest Microchip documentation before vehicle deployment, as legacy PIC17 OTP parts predate modern automotive qualification programs.
おすすめ
User Interface and Keypad Controllers
In user-interface controllers, the PIC17C44T-16/PQ scans 8x8 matrix keypads, drives 7-segment or character LCDs, and reads rotary encoders using its 33 I/O pins and on-chip timers. The 16 MHz core debounces keys, generates scan waveforms, and updates displays at 100 Hz without CPU bottlenecks. The 454-byte RAM supports menu stacks and edit buffers for setting-adjustment modes. The USART enables logging of user actions to a host processor. Designers benefit from the 44-MQFP footprint which provides ample I/O for segmented displays while keeping the board area compact.
おすすめ
Motor Control Front-End (Brushed DC and Stepper)
For low-power brushed-DC and stepper motor pre-drivers, the PIC17C44T-16/PQ generates PWM commutation waveforms, reads Hall sensors or quadrature encoders, and implements current-limit profiles via its timers and I/O. The 16 MHz core updates the PWM duty cycle at 20 kHz with margin for trapezoidal commutation on bipolar steppers. The 33 I/O pins drive H-bridge enable inputs and fault lines for multi-axis systems. The USART streams telemetry to a supervisory controller. The 5 V supply simplifies integration with discrete MOSFET gate drivers.
おすすめ
Legacy Equipment Sustainment and Aftermarket
For sustainment of legacy industrial equipment, the PIC17C44T-16/PQ is a drop-in replacement for installed units where redesign is not feasible. The 44-MQFP footprint and identical 16 KB OTP/454-byte RAM allow technicians to swap a failed unit without firmware porting. The part's wide second-source availability within the PIC17C44 family (industrial-temp, faster speed grades) provides flexibility when lead times vary. Its continued listing on distributor catalogs makes it a pragmatic choice for spares-pool management, capital-equipment maintenance contracts, and obsolescence-management programs.
おすすめ
Small Appliance and Consumer Embedded Control
In small appliances such as washing-machine user-interface boards, coffee machine controllers, and HVAC zone thermostats, the PIC17C44T-16/PQ runs state machines for mode selection, timer logic, and sensor reading. Its 33 I/O drive LED indicators, button inputs, triac-fired loads, and serial displays. The 4.5-6 V supply accepts rectified mains-derived rails without additional regulation. The OTP memory reduces per-unit cost in high-volume SKUs. Designers use the USART to expose diagnostics during factory calibration.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: PIC17C44T-16/PQ — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | PIC17C44-16/PQ | PIC17C44-16I/PQ | PIC17C44-25I/PQ | PIC17C44-16I/PT | PIC17C42A-33I/PQ |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-MQFP (10x10) | 44-MQFP (10x10) - same | 44-MQFP (10x10) - same | 44-MQFP (10x10) - same | 44-TQFP - family compatible | 44-MQFP (10x10) - same |
| Core Speed | 16 MHz | 16 MHz | 16 MHz | 25 MHz (+56%) | 16 MHz | 33 MHz (+106%) |
| Program Memory | 16 KB OTP | 16 KB OTP | 16 KB OTP | 16 KB OTP | 16 KB OTP | 4 KB OTP (-75%) |
| I/O Pins | 33 | 33 | 33 | 33 | 33 | 33 |
| Temperature Grade | Commercial | Commercial | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Industrial (-40C to +85C) |
| Packaging | Tape & Reel | Tray | Tray | Tray | Tray | Tray |
| Supply Voltage | 4.5 V to 6.0 V | 4.5 V to 6.0 V | 4.5 V to 6.0 V | 4.5 V to 6.0 V | 4.5 V to 6.0 V | 4.5 V to 5.5 V |
主な差別化要因
- Tape-and-reel packaging for high-volume SMT assembly （vs PIC17C44-16/PQ)
- Industrial temperature grade option for harsh environments （vs PIC17C44-16/PQ)
- Higher 25 MHz clock speed for compute-intensive loops （vs PIC17C44-25I/PQ)
設計ノート
Place a 100 nF ceramic decoupling capacitor as close as possible to each VDD/VSS pin pair of the PIC17C44T-16/PQ. Add a single bulk capacitor of 10 uF or larger on the supply rail near the MCU. The 4.5 V to 6.0 V supply range tolerates standard 5 V regulated rails; do not connect directly to unregulated 12 V battery systems without pre-regulation.
Route the 16 MHz crystal traces (OSC1, OSC2) short and symmetric, with the load capacitors placed within a few millimeters of the MCU pins. Keep the crystal loop area small to minimize radiated EMI. For PCB designs migrating from 44-MQFP to 44-TQFP, verify land-pattern compatibility because pad dimensions and pitch differ between the two packages.
The PIC17C44T-16/PQ uses One-Time Programmable (OTP) memory - firmware cannot be updated in the field. Lock the code-protection bits only after final firmware verification, since OTP cannot be reprogrammed. When migrating legacy designs, confirm the new PIC18F442 replacement requires a different toolchain (MPLAB X + XC8) versus legacy PIC17 tools.
The 44-MQFP package dissipates modest power at the 16 MHz core speed; for typical digital I/O loads, no external heatsink is required. Ensure the PCB copper pour under the exposed pad area (if present) is adequately stitched with thermal vias to the ground plane. Industrial-temperature (-40C to +85C) variants should be specified for harsh environments.
コンプライアンス情報
Compliance status for the legacy PIC17C44 family pre-dates current RoHS/REACH documentation standards; RoHS and lead-free status should be confirmed with the specific lot/date code on the shipping label before deployment in RoHS-restricted markets. Not AEC-Q100 qualified for automotive safety applications.
