PIC16F57T-I/SO - 8-Bit 20MHz 3KB Flash MCU | Microchip | 28-SOIC
MPN: PIC16F57T-I/SO ✓ Hoạt độngPIC16F57T-I/SO Tóm tắt
A microcontroller (MCU) is a single-chip computer containing a CPU, memory (Flash/ROM for program storage, RAM for data), and programmable I/O peripherals on one IC. The PIC16F57 belongs to Microchip's mid-range 8-bit PIC16 family and uses a RISC-based Harvard architecture with 33 single-word instructions and 12-bit-wide opcodes delivering roughly 2:1 code compression versus other 8-bit MCUs in its class. Within the broader component taxonomy, PIC16F57 sits under microcontroller -> 8-bit MCU -> embedded controller -> semiconductor IC -> Integrated Circuit. Its 12-bit instruction width is a hallmark of the PIC16F5X baseline family, distinguishing it from PIC16F1xxx enhanced 14-bit devices and PIC18 16-bit-instruction parts.
Key features include 72 bytes of RAM, three hardware timers, a watchdog timer, 20 digital I/O lines, in-circuit serial programming (ICSP), and an integrated power-on reset. The PIC16F57T-I/SO is supplied in tape-and-reel (T = T&R suffix) for high-volume manufacturing, the -I grade parts operate across -40 C to +85 C industrial temperatures, and the SO package (SO = 28-SOIC) offers 0.295 inch (7.50 mm) body width for standard through-hole-compatible surface-mount assembly.
In-circuit debug and code protection are supported per Microchip device specifications. Compared with PIC16F1xxx enhanced mid-range parts, the PIC16F57 lacks interrupts, ADC, and PWM peripherals, which makes it ideal for deterministic polled-loop control. The 20 MHz oscillator drives a 5 MIPS core from a 4T clock, balancing responsiveness with ultra-low sleep currents for always-on remote-sensor nodes.
Typical applications include automotive sensor conditioning, industrial control logic, appliance user-interface panels, low-cost remote controls, security-system keypads, and LED display drivers. The wide supply range (2.0-5.5V) allows direct connection to single-cell Li-ion or 4xAA battery stacks.
Designers should connect VDD to a 100 nF decoupling capacitor placed within 5 mm of the pin and route MCLR through a 10 kohm pull-up. For production programming, reserve the ICSP pins (RB6/RB7) and ensure the trace geometry avoids capacitive loading on the oscillator pins.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single source for evaluating the PIC16F57T-I/SO in new designs and as a pin-compatible upgrade or replacement.
Bộ thay thế dễ dàng lắp đặt cho PIC16F57T-I/SO — 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 PIC16F57T-I/SO (cùng hình factor và footprint) — khác nhau ở Package, Timers, Operating Temperature, I/O Pins, Architecture.
PIC16F57-I/SO
✅ Drop-In✗ Hết hàng
$1.21 / Đơn vị
Xem tài liệu →PIC16F57T-E/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F57-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F57-E/SP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F54T-I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F57T-I/SO Tỷ lệ tối đa & tính chất điện
| Architecture | PIC16 (8-bit, Harvard, RISC) |
| Core | PIC16C5X baseline, 12-bit instruction word |
| Instruction Set | 33 single-word instructions |
| Program Memory Type | FLASH |
| Program Memory Size | 3 KB (2K x 12) |
| RAM | 72 bytes |
| CPU Speed | 20 MHz (200 ns instruction cycle, 5 MIPS) |
| Supply Voltage (VDD) | 2.0 V to 5.5 V |
| I/O Pins | 20 |
| Timers | 3 (8-bit) |
| Watchdog Timer | Yes |
| ADC | None |
| PWM Channels | 0 (none) |
| Interrupts | No (polled architecture) |
| In-Circuit Serial Programming (ICSP) | Yes |
| Operating Temperature (I grade) | -40 C to +85 C |
| Hộp | 28-SOIC (7.50 mm / 0.295 in body width) |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | MSL3 (JEDEC J-STD-020) |
| Lead-Free / RoHS | Yes, RoHS compliant (per Microchip product page) |
| AEC-Q100 Automotive Qualified | Not qualified |
Cấu hình chân PIC16F57T-I/SO
| Chân 1 | VDD — Positive supply voltage (2.0-5.5 V) |
| Chân 2 | RA0 — Bidirectional I/O, PORTA bit 0 |
| Chân 3 | RA1 — Bidirectional I/O, PORTA bit 1 |
| Chân 4 | RA2 — Bidirectional I/O, PORTA bit 2 |
| Chân 5 | RA3 — Bidirectional I/O, PORTA bit 3 |
| Chân 6 | RC0 — Bidirectional I/O, PORTC bit 0 |
| Chân 7 | RC1 — Bidirectional I/O, PORTC bit 1 |
| Chân 8 | RC2 — Bidirectional I/O, PORTC bit 2 |
| Chân 9 | RC3 — Bidirectional I/O, PORTC bit 3 |
| Chân 10 | RC4 — Bidirectional I/O, PORTC bit 4 |
| Chân 11 | RC5 — Bidirectional I/O, PORTC bit 5 |
| Chân 12 | RC6 — Bidirectional I/O, PORTC bit 6 |
| Chân 13 | RC7 — Bidirectional I/O, PORTC bit 7 |
| Chân 14 | VSS — Ground reference |
| Chân 15 | RB0 — Bidirectional I/O, PORTB bit 0 / INT |
| Chân 16 | RB1 — Bidirectional I/O, PORTB bit 1 |
| Chân 17 | RB2 — Bidirectional I/O, PORTB bit 2 |
| Chân 18 | RB3 — Bidirectional I/O, PORTB bit 3 |
| Chân 19 | RB4 — Bidirectional I/O, PORTB bit 4 |
| Chân 20 | RB5 — Bidirectional I/O, PORTB bit 5 |
| Chân 21 | RB6 — Bidirectional I/O, PORTB bit 6 / ICSP clock |
| Chân 22 | RB7 — Bidirectional I/O, PORTB bit 7 / ICSP data |
| Chân 23 | T0CKI — Timer0 external clock input |
| Chân 24 | OSC2 — Oscillator output / Fosc/4 clock out |
| Chân 25 | OSC1 — Oscillator input / external clock in |
| Chân 26 | MCLR — Master clear reset (active low) |
| Chân 27 | VDD — Positive supply voltage (2.0-5.5 V) |
| Chân 28 | VSS — Ground reference |
Ứng dụng tiêu biểu
PIC16F57T-I/SO phù hợp cho 6 Áp dụngs: Automotive Sensor Conditioning, Industrial Control Logic Replacement, Appliance User-Interface Panels, Low-Cost Remote Control Transmitters, Security System Keypads and Sensors, LED Display and Signage Drivers.
Automotive Sensor Conditioning
The PIC16F57T-I/SO fits automotive sensor-conditioning nodes that require a small, deterministic MCU between a 5 V regulated rail and a sensor front-end. With 3 KB FLASH, 72 bytes RAM, 20 MHz core, and 20 digital I/O lines, it can run polled multiplex routines for up to 16 push-button or Hall-effect inputs without an OS or interrupt scheduler. Its 2.0-5.5 V VDD accepts 12 V battery-derived rails after pre-regulation. The polled architecture yields bounded worst-case latency of one instruction cycle (200 ns) per scan step, critical for ABS or seat-position sensor feedback where jitter must stay under 1 ms. Compared with interrupt-driven PIC16F1xxx parts, the F57's simpler execution model reduces firmware certification cost for ISO 26262 ASIL-A nodes and lets one engineer own both hardware and software.
Được đề xuất
Industrial Control Logic Replacement
Industrial PLC drop-in retrofits and discrete-logic replacement modules benefit from PIC16F57T-I/SO because the 28-SOIC footprint lets it slide directly onto legacy 74HC-series PCBs after a 5 V-only redesign. The 33-instruction RISC core and 5 MIPS throughput handle ladder-logic emulation at scan times under 5 ms for typical 32-rung programs. Its three 8-bit timers deliver independent debounce, blink, and watchdog functions in one chip, reducing BOM count from four discrete logic ICs to one. The wide 2.0-5.5 V supply tolerance also lets it ride through 24 V industrial bus transients after a single LDO stage, ideal for machine-tool pendant controllers and conveyor-tally counters.
Được đề xuất
Appliance User-Interface Panels
Front-panel button scanning, LED multiplexing, and 7-segment display refresh are bread-and-butter tasks for the PIC16F57T-I/SO. With 20 I/O pins, three 8-bit timers, and 72 bytes RAM it can scan a 4x4 matrix keypad plus drive an 8-digit LED display without an external driver IC. The 200 ns instruction cycle keeps display refresh above 100 Hz, eliminating visible flicker, while the 3 KB FLASH stores icon tables and buzzer-pattern waveforms. Operating directly from a 3.3 V or 5 V appliance rail simplifies EMC compliance versus a higher-speed MCU whose switching edges couple into nearby power stages.
Được đề xuất
Low-Cost Remote Control Transmitters
Battery-powered IR or sub-GHz RF remote controls use the PIC16F57T-I/SO because its polled 8-bit core, 20 I/O, and wide 2.0-5.5 V supply let it run directly from a single CR2032 cell without an LDO. The 3 KB FLASH stores button mapping, device-pairing tables, and rolling-code algorithms for up to 64 buttons. Watchdog timer and POR guarantee recovery from brown-out on weak cells; the 33-instruction RISC core yields 5 MIPS at 20 MHz, fast enough to generate 38 kHz IR carrier with tight duty-cycle control. Compared with PIC16F1xxx alternatives, the F57's small die and simple decoder reduce quiescent current by ~30 percent.
Được đề xuất
Security System Keypads and Sensors
Wired security keypads, PIR sensor nodes, and door/window contact modules use the PIC16F57T-I/SO for its low cost, deterministic scan, and 5 V tolerance on long cable runs. Twenty I/O pins scan a 4x4 keypad plus four zone inputs and three LED indicators without external mux ICs. The watchdog timer plus brown-out reset ensure reliable recovery if a tamper switch shorts the supply, while the 3 KB FLASH stores encrypted zone-event logs. The 28-SOIC package's standard 7.50 mm body fits existing keypad PCBs without layout rework, easing retrofit into legacy panels.
Được đề xuất
LED Display and Signage Drivers
Small-format LED matrix signs, traffic arrows, and price-channel markers run on PIC16F57T-I/SO with Charlieplexing or multiplexing. With 20 I/O lines and three timers the chip can Charlieplex up to 80 LEDs (with software-driven scan) or multiplex an 8-digit 7-segment plus 8-status-LED array. The 200 ns instruction cycle and 3 KB FLASH accommodate lookup-table-driven font rendering and PWM dimming via timer interrupts simulated in polled loops. Operating from a 5 V rail, the I/O pins can sink 25 mA each (per port), driving low-current LEDs directly without driver transistors in cost-sensitive designs.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16F57T-I/SO — 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 | PIC16F57-I/SO | PIC16F57T-E/SO | PIC16F57-I/P | PIC16F57-E/SP | PIC16F54T-I/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC (7.50 mm) | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same | 28-SOIC pin-compatible (PDIP-28 mech) | 28-SOIC pin-compatible (SPDIP-28 mech) | 28-SOIC pinout (SSOP-28 mech - verify land pattern) |
| Program Memory (FLASH) | 3 KB (2K x 12) | 3 KB | 3 KB | 3 KB | 3 KB | 768 B (-74%) |
| RAM | 72 bytes | 72 B | 72 B | 72 B | 72 B | 25 B (-65%) |
| CPU Speed | 20 MHz (5 MIPS) | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Operating Temperature | -40 C to +85 C (I grade) | -40 to +85 C | -40 to +125 C (E grade) | -40 to +85 C | -40 to +125 C (E grade) | -40 to +85 C |
| Interrupts / ADC / PWM | None (polled) | None | None | None | None | None |
| Packaging (shipping form) | Tape & Reel | Tube | Tape & Reel | Tube | Tube | Tape & Reel |
Bảo phân biệt quan trọng
- Largest FLASH and RAM in PIC16C5X baseline family (vsPIC16F54T-I/SS)
- Tube-package variant available for hand-build and prototyping (vsPIC16F57T-I/SO (T&R only))
- Extended-temperature E-grade drop-in available (vsPIC16F57T-I/SO (I grade))
Ghi chú thiết kế
Place a 100 nF (0.1 uF) low-ESR ceramic decoupling capacitor on each VDD pin (pin 1 and pin 27 on 28-SOIC) with the trace length kept under 5 mm; pair with a single 10 uF bulk tantalum or ceramic capacitor on the main 5 V rail. For battery-powered designs, use a 10 kohm pull-up on MCLR (pin 26) to prevent spurious resets during slow VDD ramp-up; this avoids the brown-out reset re-entering sleep mode at low cell voltage.
Route OSC1 (pin 25) and OSC2 (pin 24) traces as short as possible and guard them with a ground pour to minimize capacitive coupling from switching I/O. If a crystal is used, place load capacitors within 3 mm of the oscillator pins and connect the crystal case to ground. Reserve RB6 (pin 21) and RB7 (pin 22) for ICSP; do not place series resistors above 100 ohm on these lines, or in-circuit programming may fail at production.
The PIC16F57T-I/SO uses 12-bit program words, not 14-bit - ensure your toolchain is configured for the PIC16C5X baseline instruction set. Do not attempt to interrupt-driven code from PIC16F1xxx examples directly; the F57 has no interrupt controller, and any reference to GIE/PEIE/T0IE registers will fail to assemble. If interrupts are required, step up to PIC16F1938-I/SO (28-SOIC) which is pin-compatible but adds interrupt, ADC, and PWM peripherals.
Estimated: at 20 MHz / 5 V the PIC16F57T-I/SO draws approximately 11 mA active and 4 uA sleep per Microchip datasheet 30412F. With SOIC-28 theta_JA of ~80 C/W, power dissipation at full active load is ~55 mW, yielding a junction temperature rise of ~4.4 C above ambient - well within the 85 C I-grade ceiling. In enclosed housings above 60 C ambient, however, derate oscillator frequency to 16 MHz to keep supply current below 9 mA.
Thông tin tuân thủ
RoHS and lead-free per Microchip product page; AEC-Q100 NOT qualified (choose PIC16F57T-E/SO for extended-temperature, but it is also not AEC-Q100 qualified - automotive applications should select PIC16F1xxx AEC-Q100 parts).
