PIC16F676T-I/SL - 14-Pin 8-Bit Flash MCU, 1.75KB | Microchip
MPN: PIC16F676T-I/SL ✓ Hoạt độngPIC16F676T-I/SL Tóm tắt
A mid-range PIC16 microcontroller is a RISC-based 8-bit MCU engineered for deterministic, low-latency embedded control. Within the broader semiconductor hierarchy it sits in the microcontroller (MCU) tier of the power management and embedded computing stack; the PIC16 family specifically targets small-form-factor, cost-sensitive designs where simple peripherals, a tiny instruction set (35 single-word instructions) and easy in-system programmability matter more than raw compute throughput.
Key headline specifications include 20 MHz maximum clock speed, 4.5 V to 5.5 V supply voltage range, 12 I/O pins (8 with ADC capability), 10-bit ADC resolution across 8 channels, internal 4 MHz and 48 kHz oscillators, an on-chip voltage reference, and in-circuit serial programming (ICSP). The -I industrial temperature grade covers -40 °C to +85 °C. Because it is Flash-based, firmware can be re-written thousands of times in-circuit, dramatically reducing prototyping risk and field-update cost.
Architecturally, the device pairs a Harvard RISC core with 14-bit-wide instruction words and 8-bit-wide data, optimizing opcode density while keeping the data path compact. Brown-out Reset, Power-on Reset, Watchdog Timer with its own on-chip RC oscillator, and code-protection bits give the PIC16F676 robust self-monitoring for industrial and appliance-grade deployments.
Typical applications include sensor-interface front ends, low-end battery chargers, white-goods and appliance controllers, LED driver control, smoke-detector signal chains, and small motor-control PWM subsystems. For new designs, Microchip recommends PIC16F18324 as the modern enhanced successor with more peripherals and lower power.
A practical design tip: connect the MCLR pin through a 10 kΩ pull-up to VDD for normal operation and reserve a low-value resistor (≈470 Ω) in series with the ICSP programmer line to limit inrush during in-circuit programming.
This page synthesizes distributor pricing, drop-in replacement options, and engineering design notes that go beyond the manufacturer datasheet, helping engineers choose and qualify the PIC16F676T-I/SL faster.
Bộ thay thế dễ dàng lắp đặt cho PIC16F676T-I/SL — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC16F676T-I/SL (cùng hình factor và footprint) — khác nhau ở Package, ADC, Core Architecture, Operating Temperature, Timers.
PIC16F676-I/SL
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F676T-E/SL
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F676-E/SL
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F676T-I/ST
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F18324-I/SLVAO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F616-I/SL
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F676T-I/SL Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC16 mid-range 8-bit RISC |
| Program Memory (Flash) | 1.75 KB (1K x 14 words) |
| Data SRAM | 64 bytes |
| EEPROM (Data) | 128 bytes |
| Instruction Word Width | 14 bits |
| Instruction Set Size | 35 single-word instructions |
| Max CPU Clock | 20 MHz |
| Instruction Execution Time | 200 ns @ 20 MHz |
| Supply Voltage (VDD) | 4.5 V to 5.5 V |
| I/O Pins | 12 |
| ADC | 10-bit, 8 channels |
| Comparators | 2 |
| Timers | 1 x 8-bit, 1 x 16-bit |
| Oscillator | Internal 4 MHz + 48 kHz, external crystal/RC support |
| Nhiệt độ hoạt động | -40 °C to +85 °C (Industrial, -I) |
| Hộp | 14-SOIC (3.90 mm body, SL) |
| Kiểu lắp đặt | Surface Mount |
| Programming | ICSP (In-Circuit Serial Programming) |
| Cấp MSL | 1 |
| Lead-Free / RoHS | Yes, lead-free finish; RoHS-compliant per Microchip product page |
Cấu hình chân PIC16F676T-I/SL
| Chân 1 | VDD — Positive supply voltage (4.5 V to 5.5 V) |
| Chân 2 | RA5/AN4/C2OUT/T1CKI/OSC1/CLKIN — PORTA5, analog ch4, comparator 2 output, Timer1 clock, oscillator input |
| Chân 3 | RA4/AN3/T1G/OSC2/CLKOUT — PORTA4, analog ch3, Timer1 gate, oscillator output |
| Chân 4 | RA3/MCLR/VPP — PORTA3 input only, Master Clear reset, programming voltage |
| Chân 5 | RC5 — PORTC5 digital I/O |
| Chân 6 | RC4 — PORTC4 digital I/O |
| Chân 7 | RC3/AN7 — PORTC3, analog ch7 |
| Chân 8 | RC2/AN6 — PORTC2, analog ch6 |
| Chân 9 | RC1/AN5 — PORTC1, analog ch5 |
| Chân 10 | RC0/AN4 — PORTC0, analog ch4 |
| Chân 11 | RA2/AN2/VREF-/CVREF/INT — PORTA2, analog ch2, ADC VREF-, CVREF, external interrupt |
| Chân 12 | RA1/AN1/C1-/ICSPCLK — PORTA1, analog ch1, comparator 1 inverting, ICSP clock |
| Chân 13 | RA0/AN0/C1+/ICSPDAT — PORTA0, analog ch0, comparator 1 non-inverting, ICSP data |
| Chân 14 | VSS — Ground reference |
Ứng dụng tiêu biểu
PIC16F676T-I/SL phù hợp cho 6 Áp dụngs: Sensor Interface & Signal Conditioning Front End, White Goods & Appliance Controllers, Low-End Battery Charger Control, LED Driver and Lighting Control, Smoke and CO Detector Signal Chains, Small Motor-Control PWM Subsystem.
Sensor Interface & Signal Conditioning Front End
The PIC16F676T-I/SL is well-suited as a sensor-interface front-end MCU because its 10-bit ADC with 8 input channels can directly digitize thermistor, photodiode, potentiometer, and process-voltage signals at 5 V rails without external signal conditioning. Its 12 I/O pins comfortably drive multiplexers, relays and indicator LEDs, while the internal 4 MHz oscillator eliminates external crystals and reduces BOM cost for high-volume products. The 64-byte SRAM is sufficient for sensor averaging and calibration tables. Industrial designers pair it with the MCP6002 op-amp for high-impedance sensor buffering and use the on-chip comparators for threshold detection. Compared to software-only ADC alternatives, the integrated 10-bit ADC and 20 MHz core keep firmware response time under 50 µs, well within typical control-loop budgets.
Được đề xuất
White Goods & Appliance Controllers
White-goods appliances such as washing machines, dishwashers, microwave ovens and induction cooktops require deterministic 8-bit control withstanding temperature and EMI. The PIC16F676T-I/SL delivers 200 ns deterministic instruction execution, an integrated 16-bit timer for triac/SCR phase-angle control, and an industrial -40 °C to +85 °C operating range that meets appliance and consumer standards. Brown-out Reset and Watchdog Timer with dedicated internal RC provide the safety integrity required by IEC 60335 household appliance norms. The 14-SOIC footprint is friendly to single-layer PCB layouts typical of cost-driven appliance electronics, while the Flash-based architecture enables late-stage firmware customization and last-minute feature changes without re-spinning masks.
Được đề xuất
Low-End Battery Charger Control
The PIC16F676T-I/SL serves as the control brain of low-end single-cell and small multi-cell battery chargers where cost outweighs the need for high-resolution ADCs. Its 10-bit ADC and two on-chip comparators support CC/CV (constant-current / constant-voltage) loops by sampling charge current via a sense resistor and battery voltage directly. The PWM-capable 16-bit timer drives a MOSFET through the PIC's I/O pin, while the 35-instruction RISC core keeps the firmware branch loop under 100 µs per control tick. The industrial temperature grade and brown-out reset ensure safe charging behavior from -40 °C to +85 °C, making the part suitable for power-tool chargers and consumer Li-ion packs.
Được đề xuất
LED Driver and Lighting Control
Architectural LED strips, accent lighting, and signage dimmers benefit from the PIC16F676T-I/SL's 16-bit timer with PWM and dual on-chip comparators for current-mode control. The 20 MHz core and 200 ns PWM update period enable flicker-free dimming at frequencies above 1 kHz, well above the 100 Hz human-flicker threshold. Designers use the 10-bit ADC to read ambient light sensors for daylight harvesting and the 12 I/O pins to drive multiple LED channels or push-button user interfaces. Flash-based programmability allows custom fade curves and color-temperature blending per SKU without hardware changes, while the 14-SOIC footprint keeps the controller compact inside lamp housings.
Được đề xuất
Smoke and CO Detector Signal Chains
Smoke and carbon-monoxide detectors require reliable 8-bit control with self-test and low-power standby, exactly the role of the PIC16F676T-I/SL. Its integrated 10-bit ADC reads the photoelectric or electrochemical sensor element, while the on-chip comparators perform continuous threshold monitoring even in sleep mode. Brown-out Reset and Watchdog Timer with dedicated RC oscillator satisfy UL 217-style self-diagnostics. The 128-byte data EEPROM stores calibration constants and end-of-life timestamps across power cycles. Combined with the 4.5-5.5 V operating range, the part runs directly from a 3-cell alkaline or regulated Li-ion backup, and the 14-SOIC package meets SMD safety-standard reflow profiles.
Được đề xuất
Small Motor-Control PWM Subsystem
The PIC16F676T-I/SL provides a cost-optimized PWM controller for low-power brushless-DC, stepper, and small brushed-DC motors under 50 W. The 16-bit timer generates complementary PWM with adjustable dead-time, while the 8-bit timer sets the commutation rate for sensorless BEMF detection using the on-chip comparators. The 20 MHz MIPS budget is sufficient for sensor-fusion start-up ramps and stall-detection algorithms. Industrial temperature range, brown-out reset and watchdog keep the motor safe under stalled-rotor conditions, and 128-byte EEPROM retains fault history across reboots for diagnostics.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16F676T-I/SL — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC16F676-I/SL | PIC16F676T-E/SL | PIC16F676-E/SL | PIC16F18324-I/SL |
|---|---|---|---|---|---|
| Package | 14-SOIC (SL) | 14-SOIC (SL) - same | 14-SOIC (SL) - same | 14-SOIC (SL) - same | 14-SOIC (SL) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Program Memory | 1.75 KB (1K x 14) | 1.75 KB | 1.75 KB | 3.5 KB | 7 KB |
| Data SRAM | 64 bytes | 64 bytes | 64 bytes | 128 bytes | 512 bytes |
| Data EEPROM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 256 bytes |
| Max Clock Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 32 MHz |
| ADC Resolution / Channels | 10-bit / 8 channels | 10-bit / 8 ch | 10-bit / 8 ch | 8-bit / 6 ch | 10-bit / 11 ch |
| Operating Temperature | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +85 °C |
| Supply Voltage | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 2.0 V to 5.5 V | 1.8 V to 5.5 V |
| Unit Price (qty 1, USD) | 1.46 | 1.55 | 1.98 | 1.40 | 0.95 |
Bảo phân biệt quan trọng
- Wider operating temperature range than -I grade (vsPIC16F676-E/SL)
- Lower unit price than extended-temp variant (vsPIC16F676T-E/SL)
- Tape-and-Reel format for high-volume SMT assembly (vsPIC16F676-I/SL (Tube))
- Lower-voltage operation not supported (vsPIC16F616-I/SL)
Ghi chú thiết kế
Decouple VDD with a 0.1 µF X7R ceramic capacitor placed within 5 mm of pin 1, and add a bulk 10 µF tantalum or aluminum-polymer cap on the same 5 V rail. PIC mid-range devices draw short current spikes at instruction fetch; inadequate decoupling causes spurious brown-out resets, especially when the MCU drives relay coils or LEDs from the same rail.
Route the ICSP lines (RB6/ICSPCLK and RB7/ICSPDAT, mapped to RA1/RA0 on the 14-pin variant) away from switching nodes and high-dV/dt traces. Place the 10 kΩ MCLR pull-up resistor close to pin 4 and add a 470 Ω series resistor between MCLR and the programmer header to limit inrush during in-circuit programming. Avoid long parallel runs between analog and digital signals on PORTA and PORTC.
Do not leave MCLR floating; always tie it through 10 kΩ to VDD, or use the internal MCLR configuration via the CONFIG word (MCLRE = 0). Configure unused I/O pins as outputs low to minimize sleep current. The 14-SOIC package shares the same footprint as PIC16F630; verify ADC channel count (8 vs 0) before firmware reuse because the F630 has no ADC and will appear functional but never convert.
When sampling analog signals with the 10-bit ADC, add a 100 Ω source resistor and a 0.1 µF cap on the analog pin to form a low-pass filter limiting input bandwidth to about 16 kHz, well below the ADC's acquisition bandwidth. Use the ADC's acquisition delay based on source impedance: for 10 kΩ source, use at least 16 TAD; for 1 kΩ, 8 TAD is acceptable. Selecting an external VREF (VREF+ on RA2) improves absolute accuracy for ratiometric measurements.
Thông tin tuân thủ
RoHS-compliant lead-free finish per Microchip product page. AEC-Q100 not qualified; for automotive-grade applications use PIC16F676-E grade or the PIC16F18324-I/SL. Halogen-free status not explicitly stated in verified web data — marked unknown.
