PIC16LF1789T-I/PT - 8-Bit XLP MCU, 28KB Flash, 44-TQFP | Microchip
部品番号: PIC16LF1789T-I/PT ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $4.2 | $4.20 |
| 10 | $3.78 | $37.80 |
| 100 | $3.36 | $336.00 |
| 500 | $2.97 | $1,485.00 |
| 1,000 | $2.62 | $2,620.00 |
| 3,000 | $2.31 | $6,930.00 |
PIC16LF1789T-I/PT 概要
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, integrating a CPU, non-volatile program memory, working RAM, EEPROM, and a rich set of peripherals on one die. Within the broader taxonomy, the PIC16F/LF family sits between the simpler PIC10/12/14 baseline parts and the more powerful PIC18 and dsPIC33 lines; PIC16LF variants share the same instruction set and peripherals as the PIC16F cousins but operate at lower Vdd to minimize active and sleep current. MCUs hierarchically fall under microcontrollers, embedded controllers, semiconductors, and integrated circuits.
Key differentiating features include integrated op-amps, 12-bit ADC with computation (ADC2), 10-bit DAC, 16-bit PWM with fine resolution, comparators with DAC references, hardware Capacitive Voltage Divider (CVD) touch support, mTouch peripheral, and EUSART plus two SPI/I2C modules. The LF suffix guarantees deep-sleep currents in the 100s of nA range with peripheral functions kept alive through the Low-Power Timer and Windowed Watchdog Timer.
The architecture uses a 14-bit modified Harvard instruction word and 16-level hardware stack, with non-intrusive debug via MPLAB ICD 3 / 4 and REAL ICE in-circuit emulators. The 44-TQFP is the same pinout as PIC16F1789-I/PT except for Vdd range, allowing board reuse between F and LF variants.
Typical applications include IoT sensor nodes, wearable health monitors, battery-powered metering, capacitive touch front panels, brushed motor control, and small home appliances. Pick this part when you need XLP run-from-coin-cell capability combined with rich analog peripherals on a 44-pin footprint. Drop-in same-package alternatives include PIC16F1789, PIC16F1783, and PIC16F1784 in the same 44-TQFP 10x10 footprint.
ドロップイン代替品: PIC16LF1789T-I/PT — 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: PIC16LF1789T-I/PT （同一形状・フットプリント） — 相違点: Package, ADC, Communication Interfaces, Core Architecture, Program Memory (Flash).
クイック比較ツール — 並列比較する代替部品を選択:
PIC16F1789-I/PT
✅ ドロップイン📋 参考代替品（カタログ未掲載）
PIC16F1783-I/PT
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
PIC16F1784-I/PT
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$1.85 / 個
データシートを見る →PIC16F18877-I/P
✅ ドロップイン✓ 在庫あり
$2.25 / 個
データシートを見る →PIC16LF1789T-I/PT 最大定格＆電気的特性
| Core | PIC16 8-bit RISC |
| Program Memory (Flash) | 28 KB (16K x 14 words) |
| SRAM | 2 KB |
| EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz (8 MIPS) |
| Supply Voltage (Vdd) | 1.8 V to 3.6 V |
| 動作温度 | -40 C to +85 C (Industrial) |
| パッケージ | 44-pin TQFP, 10 x 10 mm |
| ADC | 12-bit ADC2 with computation |
| DAC | 8-bit 5-channel DAC; also 10-bit DAC options |
| Timers | Timer0, Timer1, Timer2, SMT, WWDT, HLT |
| PWM | Multiple 16-bit PWM with auto-shutdown |
| Comparators | On-chip with selectable DAC reference |
| Op-Amps | Up to 4 on-chip operational amplifiers |
| Communication | EUSART, 2x SPI, 2x I2C |
| Touch Sensing | mTouch CVD/capacitive touch hardware |
| I/O Pins | Up to 36 digital I/O |
| 実装タイプ | Surface Mount |
| MSLレベル | MSL3 |
| RoHS ステータス | Compliant |
| Lead Free | Yes |
PIC16LF1789T-I/PT ピン構成
| ピン 1 | RA3/AN3/C1IN+/C2IN+ — Digital I/O with analog input and comparator inputs |
| ピン 2 | RA4/T0CKI/C3OUT — Digital I/O with Timer0 clock input |
| ピン 3 | RA5/AN4/C2IN-/C1IN-/SS2 — Digital I/O with comparator and SPI SS |
| ピン 4 | RA6 — Digital I/O |
| ピン 5 | RA7 — Digital I/O |
| ピン 6 | RC0 — Digital I/O / PWM |
| ピン 7 | RC1 — Digital I/O / PWM |
| ピン 8 | RC2/AN12 — Digital I/O with analog input |
| ピン 9 | RC3/AN13 — Digital I/O with analog input |
| ピン 10 | RC4/AN14 — Digital I/O with analog input |
| ピン 11 | RC5/AN15 — Digital I/O with analog input |
| ピン 12 | RC6/AN8/C4IN+/C5IN+/TX/CK — Digital I/O / EUSART TX/CK |
| ピン 13 | RC7/AN9/C4IN-/C5IN-/RX/DT — Digital I/O / EUSART RX/DT |
| ピン 14 | RB0 — Digital I/O / interrupt-on-change |
| ピン 15 | RB1 — Digital I/O / interrupt-on-change |
| ピン 16 | RB2 — Digital I/O / interrupt-on-change |
| ピン 17 | RB3 — Digital I/O / interrupt-on-change |
| ピン 18 | RB4 — Digital I/O / interrupt-on-change |
| ピン 19 | RB5 — Digital I/O / interrupt-on-change |
| ピン 20 | RB6/ICSPCLK — Digital I/O / ICP clock (programming/debug) |
| ピン 21 | RB7/ICSPDAT — Digital I/O / ICP data (programming/debug) |
| ピン 22 | RE3/MCLR/VPP — Master Clear / programming voltage |
| ピン 23 | RE0 — Digital I/O |
| ピン 24 | RE1 — Digital I/O |
| ピン 25 | RE2 — Digital I/O |
| ピン 26 | RD0 — Digital I/O |
| ピン 27 | RD1 — Digital I/O |
| ピン 28 | RD2 — Digital I/O |
| ピン 29 | RD3 — Digital I/O |
| ピン 30 | RD4 — Digital I/O |
| ピン 31 | RD5 — Digital I/O |
| ピン 32 | RD6 — Digital I/O |
| ピン 33 | RD7 — Digital I/O |
| ピン 34 | Vss — Ground |
| ピン 35 | Vdd — Positive supply 1.8V-3.6V |
| ピン 36 | RA0/AN0/OPA1IN+ — Digital I/O with analog input / op-amp input |
| ピン 37 | RA1/AN1/OPA1IN-/OPA2IN+ — Digital I/O with analog input / op-amp input |
| ピン 38 | RA2/AN2/OPA2IN- — Digital I/O with analog input / op-amp input |
| ピン 39 | Vss — Ground (bonding) |
| ピン 40 | Vdd — Positive supply 1.8V-3.6V (bonding) |
| ピン 41 | AVdd — Analog positive supply |
| ピン 42 | AVss — Analog ground |
| ピン 43 | DAC1OUT — DAC1 output |
| ピン 44 | DAC2OUT — DAC2 output |
主な用途
PIC16LF1789T-I/PT の用途: 7 件s: Battery-Powered IoT Sensor Nodes, Wearable Health Monitors, Capacitive Touch Front Panels, Industrial Metering and Data Logging, Brushed DC Motor and Fan Control, HVAC and White-Goods UI Boards, Sensorless BLDC Reference Designs.
Battery-Powered IoT Sensor Nodes
The PIC16LF1789T-I/PT suits coin-cell IoT nodes because its 1.8V-3.6V Vdd window and ~50 nA typical sleep current meet the same envelope as the PIC16LF1779-I/P in lower-pin designs. The integrated 12-bit ADC2 with computation plus four on-chip op-amps run a sensor bridge, RTD, or gas-sensor front-end without external analog ICs. Spinning 28KB Flash at 32MHz/8 MIPS gives headroom for state machines plus interrupt-driven comms. Unlike higher-MIPS Cortex parts it sips microwatts instead of milliwatts, extending CR2032 lifetime from months to years.
おすすめ
Wearable Health Monitors
Wearable bands and patches need sub-1uA idle and accurate bio-sensing, both of which the PIC16LF1789T-I/PT delivers. The 'L' supply range (1.8V-3.6V) tolerates exhausted coin-cell down to brownout without datasheet deviation. The op-amp + 12-bit ADC2 chain measures heart-rate PPG or ECG with no external instrumentation amp needed. Compared to a Cortex-M0, the LF class runs continuously for under 200 uA/MHz, a 3-5x efficiency win for always-on scenarios. The 44-TQFP fits a 25x25 mm PCB next to the BLE SoC.
おすすめ
Capacitive Touch Front Panels
Industrial and appliance front panels get robust controls from mTouch CVD hardware on the PIC16LF1789T-I/PT. The dedicated capacitive-scan peripheral supports up to 36 touch channels across PORTA/B/C/D/E, scanning through 6 mm glass and rejecting noise from VFD or motor inverters. Combined with mTouch-tuned firmware, callbacks complete in <10 ms per button while average current stays under 5 uA. The 'LF' supply range enables 3.3 V coin-cell retrofit of legacy 5 V panels by also choosing pin-compatible PIC16F1789-I/PT behind the same PCB.
おすすめ
Industrial Metering and Data Logging
Smart meters and data loggers operating from 3.3 V lithium primaries choose the PIC16LF1789T-I/PT for Flash integrity and sleep current. 28KB Flash holds 250+ days of compiled log records; 256B EEPROM retains calibration constants across battery swaps. The 12-bit ADC2 captures CT or shunt outputs while internal op-amps gain the signal to a near-full-scale swing. Combined with the WWDT and Low-Power Timer the part stays in watchdog-only state, only waking on sense thresholds - cutting DDP tariffs yet matching PIC16F1789 firmware runtimes.
おすすめ
Brushed DC Motor and Fan Control
Small appliance and HVAC fans use the PIC16LF1789T-I/PT's 16-bit PWM with auto-shutdown, comparators, and op-amps to build a single-chip speed controller. The 'L' 1.8V-3.6V supply rides a 3.3 V LDO directly from a 12 V fan bus; the F variant (PIC16F1789-I/PT) handles 5 V fans when needed. Feedback loop closes in firmware through the on-chip op-amp keeping TAC raw counts stable across temperature. Compared with PLC-based implementations the LF BOM saves $2-4 per motor and 80% PCB area.
おすすめ
HVAC and White-Goods UI Boards
Microcontroller plus user-interface boards in dishwashers, washer-dryers, and induction cookers fit the PIC16LF1789T-I/PT footprint and LF supply range. The 16-bit PWM, 10-bit DAC, and 5 GPIO-controlled indicators tie directly to compressor relays and triac zero-cross without glue logic. Variants like PIC16LF1769-I/ML match smaller 28-pin UI boards or PIC16LF1788-I/SS handle 28-pin variants - all from the same LF voltage platform. Replacing a discontinued 11C90/-or 16C-series design with this LF part halves BOM count and adds auto-shutdown PWM safety.
おすすめ
Sensorless BLDC Reference Designs
Small fan and pump designs lacking position sensors still develop reference BLDC firmware on the PIC16LF1789T-I/PT before moving to dsPIC33EP16GS202-E/SS for production. Back-EMF zero-cross detection runs through on-chip comparators, while 16-bit PWM with auto-shutdown handles commutation timing at 32 MHz. The 'LF' supply range supports single-rail designs where back-EMF noise might otherwise upset the Vdd. Once tuned, the firmware ports cleanly to PIC16F1789-I/PT for 5 V high-side gate drive circuits.
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: PIC16LF1789T-I/PT — 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 | PIC16F1789-I/PT | PIC16F1783-I/PT | PIC16F1784-I/PT |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-TQFP (10x10 mm) | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same |
| Flash | 28 KB | 28 KB | 4 KB | 7 KB |
| SRAM | 2 KB | 2 KB | 2 KB | 2 KB |
| EEPROM | 256 B | 256 B | 256 B | 256 B |
| Maximum Clock | 32 MHz / 8 MIPS | 32 MHz / 8 MIPS | 32 MHz / 8 MIPS | 32 MHz / 8 MIPS |
| Supply Voltage | 1.8 V - 3.6 V (LF) | 2.0 V - 5.5 V (F) | 2.0 V - 5.5 V (F) | 2.0 V - 5.5 V (F) |
| ADC | 12-bit ADC2 with computation | 12-bit ADC2 | 11-channel 12-bit ADC | 11-channel 12-bit ADC |
主な差別化要因
- Lowest Vdd minimum across the 16F178x family （vs PIC16F1789-I/PT)
- Highest Flash density in the LF lineup （vs PIC16F1783-I/PT)
- Four on-chip op-amps + 12-bit ADC2 （vs PIC16F1784-I/PT)
- mTouch CVD hardware （vs Non-PIC MCUs in this class)
設計ノート
Because the LF variant supports down to 1.8V Vdd, design the decoupling network with 1uF X7R + 100nF X7R on each Vdd/Vss pair (Pins 11/32 and 39/40 on the 44-TQFP), plus 100nF on AVdd. Estimated: budget at least 4-5 capacitor placements around the package to keep ADC2 noise below 1 LSB at low Vdd. Decouple AVdd/Pin 41 with a 1uF ferrite to DVdd for converter isolation.
Estimated: at full 32 MHz CPU + all peripherals toggling at LF supply, the 44-TQFP dissipates under 30 mW, well inside the 100 C/W theta_JA. The TQFP copper area matters only when driving LEDs or relay coils through GPIO - add a 25mm x 25mm GND copper pour if ambient exceeds 85 C. Junction rise at room temp stays <10 C, but cap I/O source/sink at 25 mA per pin, 4x pins max.
Critical pitfalls: (1) Programming voltage on MCLR (pin 22) must be held low for normal operation - pull to Vdd through 10kW with a 100nF to ground. (2) ADC2 in Pro Mode requires an external cap on VREF+ for stability. (3) LF parts cannot be debugged at 5V - ICD 3/4 must run at the target Vdd (1.8-3.6V). (4) icd 4 pre-configures LF FOSC settings to internal, ensure fuse table loads.
Keep ICSP traces (RB6/RB7) short to the ICD header and avoid cross-tracing from adjacent high-speed or noise sources (op-amp outputs, PWMs). The 44-TQFP has 0.8mm lead pitch - add solder mask expansion at leads, and use a 5-6 mil copper relief pad for easier re-work. Estimated: route ICSP with a 1.5 kW series resistor on each line for EMI margin.
When using the on-chip op-amps for sensor gains, route analog traces on top layer with GND shield on the next layer, never split. Estimated: place analog reference bypasses within 50 mils of OPAxOUT pins. Switch off INTOSC (HF) before op-amp sampling to avoid digital harmonic injection into ADC2 result - use LFINTOSC during measured windows.
コンプライアンス情報
Industrial temperature grade -40C to +85C. RoHS and lead-free confirmed per Microchip product page (last verified 2026-09-24). AEC-Q100 not applicable: this is not an automotive-grade part - consider PIC16LF1789-E/P or Microchip AEC-Q100 listed siblings for automotive.
