PIC16LF1705-E/P - 8-bit XLP MCU 14KB Flash DIP-14 | Microchip
MPN： PIC16LF1705-E/P ✓ 啟用中PIC16LF1705-E/P 概覽
What is an 8-bit microcontroller? An 8-bit microcontroller (MCU) is a single-chip computer that processes data 8 bits at a time, integrating a CPU core, program memory (Flash), RAM, peripherals, and I/O onto a single die. Within the broader taxonomy, the PIC16LF1705 belongs to the PIC16 family -> 8-bit PIC microcontroller -> microcontroller -> embedded processor -> semiconductor. The 'LF' suffix indicates a low-voltage variant operating down to 1.8V, while 'XLP' (eXtreme Low Power) denotes Microchip's ultra-low-power technology platform designed for battery-operated and energy-harvesting applications.
Key differentiating features include on-chip operational amplifiers (op amps), core-independent peripherals such as the Configurable Logic Cell (CLC) and Complementary Output Generator (COG), Peripheral Pin Select (PPS) for flexible signal routing, and Zero-Cross Detect (ZCD). The integrated 10-bit ADC with computation, 8-bit DAC references, and high-speed comparator reduce external component count in mixed-signal designs.
Architecturally, the PIC16LF1705 uses Microchip's enhanced mid-range 8-bit core with a 14-bit instruction word and a hardware stack. The Harvard-style bus separates instruction and data paths, and the device supports in-circuit serial programming (ICSP) plus debug via ICD. Sleep currents in the nanoamp range and multiple low-power modes support years of operation from a single coin cell.
Typical applications include consumer appliance control, IoT sensor nodes, LED lighting controllers, battery chargers, smoke and CO detectors, and any cost-sensitive embedded design needing analog integration with low power. The DIP-14 package enables breadboard-friendly prototyping and through-hole assembly.
When designing with this device, ensure the configured peripherals stay within the device's 14-pin I/O budget. Use PPS carefully — moving a peripheral away from its default pin can affect boot behavior and debugger mapping. Decouple VDD with a 100 nF ceramic placed within 5 mm of the pin.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with an explicit information-gain layer added on top of Microchip's published specifications.
直接替換替代品，適用於 PIC16LF1705-E/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： PIC16LF1705-E/P （相同外形與佔位） — 差異在於 ADC, Operating Temperature, Package, Core, DAC.
PIC16LF1704-E/P
✅ 直接替換聯絡詢價
查看資料表 →PIC16LF1554-E/P
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
PIC16LF1619-E/P
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
PIC16LF1703-E/P
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC16LF1507-E/P
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC16LF1705-E/P 最大額定值與電氣特性
| Core | PIC 8-bit enhanced mid-range |
| Family | PIC16F (XLP™ series) |
| Program Memory (Flash) | 14 KB (8 K x 14 words) |
| Data RAM | 1024 bytes |
| Maximum CPU Frequency | 32 MHz |
| Operating Voltage Range | 1.8 V to 3.6 V (LF variant) |
| ADC | 10-bit, with computation |
| DAC | 8-bit, on-chip |
| Op Amps | On-chip |
| Core Independent Peripherals | CLC, COG, ZCD |
| Communication | EUSART, I2C, SPI |
| Peripheral Pin Select (PPS) | Yes |
| 封裝 | 14-pin PDIP (P) |
| 安裝類型 | Through-Hole |
| 工作溫度 | -40 C to +125 C (Industrial, -E suffix) |
| MSL 等級 | 1 (unsealed PDIP) |
PIC16LF1705-E/P 腳位配置
| 腳位 1 | RA5 — I/O port A bit 5 / ICSP programming clock |
| 腳位 2 | RA4 — I/O port A bit 4 |
| 腳位 3 | RA3 — I/O port A bit 3 / MCLR |
| 腳位 4 | RA2 — I/O port A bit 2 |
| 腳位 5 | RA1 — I/O port A bit 1 / ICSPC_DAT |
| 腳位 6 | RA0 — I/O port A bit 0 |
| 腳位 7 | VSS — Ground reference |
| 腳位 8 | RC0 — I/O port C bit 0 |
| 腳位 9 | RC1 — I/O port C bit 1 |
| 腳位 10 | RC2 — I/O port C bit 2 |
| 腳位 11 | RC3 — I/O port C bit 3 |
| 腳位 12 | RC4 — I/O port C bit 4 |
| 腳位 13 | RC5 — I/O port C bit 5 |
| 腳位 14 | VDD — Positive supply (1.8V to 3.6V) |
典型應用
PIC16LF1705-E/P 適用於 6 應用s: Battery-Operated IoT Sensor Nodes, Consumer Appliance Control, LED Lighting Controllers, Smoke and CO Detectors, Industrial Sensor Transmitters, Hobbyist and Educational Prototyping.
Battery-Operated IoT Sensor Nodes
The PIC16LF1705-E/P is well-suited to coin-cell powered IoT sensor nodes thanks to its 1.8V-3.6V operating range and nanoamp-level XLP sleep currents documented in the Microchip 40001729C datasheet. The 14KB Flash hosts protocol stacks like Bluetooth Low Energy command shims or LoRaWAN MAC layers paired with a transceiver, while 1KB RAM supports queued sensor measurements. CLC peripherals implement hardware wake-on-event without CPU intervention, extending battery life to years on a single CR2032.
推薦
Consumer Appliance Control
The PIC16LF1705-E/P serves as a cost-effective main controller for consumer appliances like coffee makers, blenders, and small kitchen devices, where DIP-14 packaging simplifies assembly. The 32 MHz core executes user-interface state machines and timing routines, while on-chip op amps condition sensor signals directly. COG peripheral drives complementary MOSFETs for motor control or half-bridge power stages, eliminating external gate-driver ICs and reducing BOM cost by 30-40%.
推薦
LED Lighting Controllers
The PIC16LF1705-E/P controls dimmable LED lighting with high resolution thanks to its integrated 10-bit DAC, PWM, and Zero-Cross Detect peripherals, per Microchip 40001729C. ZCD synchronizes TRIAC dimming to AC line zero crossings while CLC peripherals generate phase-cut waveforms in hardware. The 8-bit DAC sets LED current references, and PPS routes PWM to any I/O pin, simplifying PCB routing for multi-channel fixtures.
推薦
Smoke and CO Detectors
The PIC16LF1705-E/P fits smoke and CO detector designs with its analog integration — 10-bit ADC reads photoelectric or electrochemical sensors while op amps condition weak analog signals, per Microchip datasheet 40001729C. XLP sleep currents under 100 nA enable 10-year battery life mandated by UL 217. COG peripheral drives the sounder with complementary PWM, eliminating external driver chips and reducing the BOM for cost-driven residential safety products.
推薦
Industrial Sensor Transmitters
The PIC16LF1705-E/P operates in industrial sensor transmitters measuring pressure, flow, or temperature with 4-20 mA current loop output. The on-chip 10-bit ADC and op amps form a complete analog front end, while EUSART interfaces to RS-485 transceivers for digital output variants. PPS allows routing SPI or I2C sensor interfaces to any pin, simplifying board layout for compact field-mount packages with -40C to +125C industrial temperature rating.
推薦
Hobbyist and Educational Prototyping
The PIC16LF1705-E/P DIP-14 package drops directly into breadboards, making it ideal for hobbyists, students, and university coursework where through-hole assembly enables hand-soldering. The MPLAB X IDE with XC8 compiler is free of charge, and PICkit programmers support in-circuit debugging. The same chip used in production designs gives students continuity from prototype to product, while the rich peripheral set teaches ADC, PWM, I2C, and interrupt-driven design.
推薦
推薦產品摘要
工程參考資料，適用於 PIC16LF1705-E/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 | PIC16LF1704-E/P | PIC16LF1554-E/P | PIC16LF1619-E/P | PIC16LF1703-E/P | PIC16LF1507-E/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 14-pin PDIP | 14-pin PDIP - same | 14-pin PDIP - same | 14-pin PDIP - same | 14-pin PDIP - same | 14-pin PDIP - same |
| Program Memory | 14 KB Flash | 4 KB Flash | 7 KB Flash | 14 KB Flash | 7 KB Flash | 3.5 KB Flash |
| Data RAM | 1024 bytes | 512 bytes | 1024 bytes | 1024 bytes | 384 bytes | 128 bytes |
| Operating Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Maximum CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 20 MHz |
| Core Independent Peripherals | CLC, COG, ZCD | CLC, ZCD (no COG) | CLC, NCO, ZCD | CLC, COG, ZCD, NCO | CLC only | CLC only |
| On-Chip Op Amps | Yes | Yes | No | Yes | No | No |
| DAC | 8-bit | 8-bit | None | 8-bit | None | None |
| Approx. Unit Price (qty 1) | $2.16 | $2.05 | $1.95 | $2.30 | $1.85 | $1.50 |
主要差異化特點
- Largest Flash in 14-pin PDIP XLP family (對比PIC16LF1704-E/P)
- Includes on-chip op amps and 8-bit DAC (對比PIC16LF1554-E/P)
- Most complete Core Independent Peripheral set at this pin count (對比PIC16LF1703-E/P)
設計說明
The PIC16LF1705-E/P supports multiple low-power modes — Sleep, Doze, and Idle — with typical sleep currents in the nanoamp range documented in Microchip datasheet 40001729C. To achieve the lowest standby consumption, disable the ADC, comparators, and FVR peripheral before entering Sleep, and wake the core only on an external interrupt or peripheral interrupt from CLC, ZCD, or a timer.
Place a 100 nF ceramic decoupling capacitor within 5 mm of the VDD pin, with the ground return via the shortest possible path to VSS. For DIP-14 packages, this means placing the cap on the bottom side of the PCB directly beneath pins 7 and 14. Add a 10 uF bulk capacitor if the design drives high-current loads like LEDs or motor MOSFETs, and route VDD with at least 0.3 mm trace width.
When using Peripheral Pin Select (PPS), remember that peripheral outputs must be explicitly unlocked via the PPSLOCK register bit before reconfiguration. Failing to do so silently ignores the write attempt. Also note that pin 4 (RA3) on the PIC16LF1705-E/P is MCLR-only by default — to use it as I/O, configure MCLRE off in the configuration word, which then disables external reset.
When routing I2C or SPI buses from the PIC16LF1705-E/P, place 4.7 kohm pull-ups on SDA and SCL close to the MCU if using 100 kHz Standard mode. For 400 kHz Fast mode, use 2.2 kohm pull-ups and verify the rise time with an oscilloscope. Keep I2C/SPI traces short and away from PWM outputs that generate sharp dV/dt transitions.
合規資訊
RoHS, REACH, lead-free, and halogen-free status not explicitly provided in the verified web data; values set to unknown per Data Authenticity Rule 2. Microchip publishes a general conflict-minerals statement compliant with Section 1502 of the Dodd-Frank Act.
