PIC16F18345-I/P - 8-Bit 32MHz XLP MCU 14KB Flash | Microchip
MPN： PIC16F18345-I/P ✓ 啟用中PIC16F18345-I/P 概覽
An 8-bit microcontroller (MCU) is a single-chip processor with an 8-bit data path, integrating CPU, Flash, RAM, EEPROM, and peripherals on one die. Within the PIC hierarchy: PIC16F18345 sits under PIC16 -> 8-bit PIC microcontrollers -> microcontrollers -> microcontrollers and processors -> semiconductors. PIC MCUs are widely used in cost-sensitive embedded designs where deterministic behavior, low power, and rich analog integration matter more than raw compute.
Key differentiating features include the Peripheral Pin Select (PPS) mapper that remaps digital peripheral I/O to user-selected pins, the Functional Safety (FuSa) classification for IEC 61508 SIL-capable applications, and four 16-bit timers with hardware PWM. The 12-bit ADC with Computation automates averaging, oversampling, and threshold comparison without CPU intervention, offloading real-time signal processing.
Architecturally, the device uses a RISC-based PIC16 core with a 32 MHz internal oscillator and a 31 kHz LFINTOSC for low-power modes. The device operates across -40C to +85C industrial temperature range with on-board debugging via ICD, supporting in-circuit serial programming (ICSP). A rich interrupt controller and 18-level hardware stack simplify real-time firmware design.
Typical applications include IoT sensor nodes, battery-powered instrumentation, automotive body electronics, consumer appliances, and Function Safety (FuSa) industrial control loops. PPS flexibility suits pin-constrained PCB layouts while the 256-byte EEPROM enables nonvolatile parameter storage without external memory.
When designing, place a 100 nF decoupling capacitor on VDD within 3 mm of the pin and add a 10 uF bulk capacitor near the IC. Use ICSP pins (RB6/ICSPDAT, RB7/ICSPCLK) for production programming and route MCLR with a 10 kohm pull-up to VDD.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet, helping engineers make sourcing and design decisions faster.
直接替換替代品，適用於 PIC16F18345-I/P — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC16F18345-I/P （相同外形與佔位） — 差異在於 Package, ADC, Program Memory (Flash), I/O Pins, DAC.
PIC16F18345-E/P
✅ 直接替換聯絡詢價
查看資料表 →PIC16F18344-I/SS
✅ 直接替換聯絡詢價
查看資料表 →PIC16F18325-I/P
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC16F18313-I/P
✅ 直接替換聯絡詢價
查看資料表 →PIC16F1829-I/P
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC16F1825-I/P
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC16F18345-I/P 最大額定值與電氣特性
| Core | PIC16 8-bit RISC |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data RAM | 1 KB |
| EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz |
| Operating Voltage Range | 2.3 V to 5.5 V |
| I/O Pins | 18 |
| ADC | 12-bit with Computation (ADC^2) |
| DAC | 10-bit |
| Comparators | 2 |
| PWM Channels | 4 (16-bit) |
| Timers | 4 x 16-bit + 2 x 8-bit |
| Communication | I2C, SPI, EUSART, RS-232, RS-485 |
| 封裝 | 20-pin PDIP (300 mil) |
| 工作溫度 | -40C to +85C (Industrial) |
| Peripheral Pin Select (PPS) | Yes |
| Functional Safety (FuSa) | Yes - IEC 61508 SIL-capable |
| RoHS 狀態 | Compliant |
| MSL 等級 | 1 (unlimited) |
| Programming/Debug | ICSP (2-wire) via RB6/RB7 |
PIC16F18345-I/P 腳位配置
| 腳位 1 | VDD — Positive power supply |
| 腳位 2 | RA5 — Digital I/O / analog input / PWM |
| 腳位 3 | RA4 — Digital I/O / analog input |
| 腳位 4 | MCLR/VPP/RA3 — Reset (active low) / programming voltage / digital I/O |
| 腳位 5 | RC5 — Digital I/O / analog input |
| 腳位 6 | RC4 — Digital I/O / analog input |
| 腳位 7 | RC3 — Digital I/O / analog input / SCL |
| 腳位 8 | RC2 — Digital I/O / analog input |
| 腳位 9 | RC1 — Digital I/O / analog input / SDA |
| 腳位 10 | RC0 — Digital I/O / analog input |
| 腳位 11 | RA2 — Digital I/O / analog input / DAC output |
| 腳位 12 | RA1 — Digital I/O / analog input / DAC reference |
| 腳位 13 | RA0 — Digital I/O / analog input |
| 腳位 14 | VSS — Ground reference |
| 腳位 15 | RA7 — Digital I/O / oscillator input |
| 腳位 16 | RA6 — Digital I/O / oscillator output |
| 腳位 17 | RC7 — Digital I/O / analog input |
| 腳位 18 | RC6 — Digital I/O / analog input |
| 腳位 19 | RB7 — Digital I/O / ICSPCLK (programming clock) |
| 腳位 20 | RB6 — Digital I/O / ICSPDAT (programming data) |
典型應用
PIC16F18345-I/P 適用於 7 應用s: IoT Sensor Nodes, Battery-Powered Instrumentation, Automotive Body Electronics, Consumer Appliance Control, Functional Safety (FuSa) Industrial Control, LED Lighting Controllers, Smart Home Sensor Hubs.
IoT Sensor Nodes
The PIC16F18345-I/P fits IoT sensor nodes due to its 32 MHz PIC16 core, 14 KB Flash, 12-bit ADC^2 with built-in averaging, and XLP sub-1 uA sleep current. With PPS the same firmware scales across multiple sensor daughterboards. Place between a sensor and a LoRa/BLE module; ADC^2 hardware oversampling improves measurement SNR while the MCU sleeps at <1 uA, enabling multi-year coin-cell battery life in remote deployments.
推薦
Battery-Powered Instrumentation
The PIC16F18345-I/P is suited for handheld meters and battery-powered instruments thanks to its 2.3V-5.5V operating range, XLP sleep currents, and 256-byte EEPROM for nonvolatile calibration storage. ADC^2 automates sensor linearization, offloading the CPU during data acquisition. Power is dominated by the sensor, not the MCU, so two AA batteries can power a continuous-logging instrument for 6-12 months without replacement.
推薦
Automotive Body Electronics
The PIC16F18345-I/P works in body-control modules, lighting controllers, and HVAC auxiliaries because its industrial -40C to +85C range covers most cabin environments, and PIC MCUs are AEC-Q100-qualified in the same family. The 4 PWM channels drive LED dimmers or small motors; the EUSART handles LIN bus; ADC^2 reads thermistor/resistive sensors. For under-hood applications, upgrade to PIC16F18345-E/P (extended temperature) on the same footprint.
推薦
Consumer Appliance Control
The PIC16F18345-I/P is ideal for white-goods and small-appliance controllers (coffee makers, blenders, washing-machine user interfaces) where 14 KB Flash accommodates rich state machines and the 4 PWM channels drive loads like pumps, valves, or heaters. The Peripheral Pin Select (PPS) allows layout flexibility across product variants. ADC^2 reads multiple analog sensors (temperature, water level, motor current) while the MCU stays in low-power Idle during standby.
推薦
Functional Safety (FuSa) Industrial Control
The PIC16F18345-I/P suits IEC 61508 SIL-capable industrial loops because Microchip classifies the PIC16F18345 in the Functional Safety (FuSa) family with FMEDA reports and safety manuals available. Hardware diagnostics include windowed watchdog, oscillator fail detect, and ADC^2 self-test. Use in safety interlocks, sensor aggregation modules, and redundant shutdown paths where documentation matters as much as silicon.
推薦
LED Lighting Controllers
The PIC16F18345-I/P drives multi-channel LED lighting because it integrates 4 hardware PWM channels with 16-bit resolution, supports I2C for digital LED drivers like PCA9685 expansion, and runs from 2.3V-5.5V for direct Li-ion or USB bus power. ADC^2 reads ambient light sensors for closed-loop dimming, while the CLC (Configurable Logic Cell) implements hardware PWM blanking without CPU overhead, enabling flicker-free dimming to 0.1%.
推薦
Smart Home Sensor Hubs
The PIC16F18345-I/P works in low-cost smart-home sensor hubs (PIR, door/window, water leak) thanks to sub-1 uA XLP sleep, ADC^2 with auto-threshold for digital event outputs, and battery-friendly 32 kHz LFINTOSC operation. PPS lets the same PCB support PIR, magnetic-reed, and water-leak variants by remapping interrupts. With a sub-GHz or BLE companion module, the node wakes on event, transmits, and returns to sleep for multi-year battery life.
推薦
推薦產品摘要
工程參考資料，適用於 PIC16F18345-I/P — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PIC16F18345-E/P | PIC16F18344-I/SS | PIC16F18325-I/P | PIC16F18313-I/P | PIC16F1829-I/P | PIC16F1825-I/P |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-pin PDIP | 20-pin PDIP | 20-pin PDIP | 20-pin PDIP | 20-pin PDIP | 20-pin PDIP | 20-pin PDIP |
| Flash Memory | 14 KB | 14 KB | 14 KB | 14 KB | 7 KB | 14 KB | 14 KB |
| RAM | 1 KB | 1 KB | 1 KB | 1 KB | 256 B | 1 KB | 1 KB |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B | 256 B | 256 B |
| Max Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| ADC | 12-bit ADC^2 | 12-bit ADC^2 | 10-bit ADC | 12-bit ADC^2 | 10-bit ADC | 10-bit ADC | 10-bit ADC |
| Functional Safety (FuSa) | Yes (IEC 61508) | Yes (IEC 61508) | No | No | No | No | No |
| Operating Temperature | -40C to +85C | -40C to +125C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Unit Price (qty 1) | $2.35 | $2.60 | $2.10 | $2.05 | $1.85 | $2.40 | $2.20 |
主要差異化特點
- Functional Safety (FuSa) classification for IEC 61508 SIL (對比PIC16F18344-I/SS)
- ADC^2 hardware computation offload (對比PIC16F1825-I/P)
- Extended temperature option in same package (對比PIC16F18345-E/P)
- Memory density advantage (對比PIC16F18313-I/P)
設計說明
Place a 100 nF ceramic decoupling capacitor within 3 mm of each VDD pin (pin 1 and pin 20) and add a single 10 uF bulk capacitor near the MCU. For battery-powered designs, route the MCLR pull-up through a 10 kohm resistor to VDD and add a 100 nF cap on MCLR for noise immunity. The XLP Sleep mode draws less than 1 uA with LFINTOSC, suitable for coin-cell applications.
Route ICSP lines (RB6/ICSPDAT and RB7/ICSPCLK) as short, parallel traces to a 2x3 0.1 inch header for in-circuit serial programming. Avoid routing high-frequency signals across the ICSP lines to prevent programming glitches. Place a 10 kohm pull-up on MCLR. Reserve a footprint for a 4-pin or 5-pin ICD header if production debugging is expected.
Do not enable the internal HFINTOSC at full 32 MHz without verifying VDD is above 2.7V - at lower voltages the device can become unstable. Do not skip the configuration bits (CONFIG1/2/3/4) in firmware - leaving them blanked will result in default MCLR-disabled behavior and the MCU will appear dead. Always use a fresh XC8 compiler version compatible with PIC16F18345 (1.40 or later).
For ADC^2 measurements above 12-bit effective resolution, add a 100 nF + 10 uF RC network on the analog VDD rail (separate from digital VDD via ferrite bead). Use shortest possible traces for analog inputs and route digital signals away. Enable ADC^2 hardware oversampling for noisy environments - the integrated averaging eliminates most sensor noise without CPU overhead.
合規資訊
RoHS and REACH compliant per Microchip product page. The PIC16F18345 family is IEC 61508 SIL-capable (FuSa) but not AEC-Q100 automotive certified at the PIC16F18345-I/P industrial temperature grade - for AEC-Q100 applications, consult Microchip for AEC-Q100-qualified variants.
