PIC16LF628AT-I/SS - 8-Bit 20MHz MCU 3.5KB Flash | Microchip
MPN: PIC16LF628AT-I/SS ✓ Hoạt độngPIC16LF628AT-I/SS Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and programmable I/O peripherals. The 8-bit PIC16 family is part of Microchip's mid-range RISC architecture, positioned between the baseline PIC10/PIC12 and the enhanced PIC18 families, and serves as a workhorse for cost-sensitive embedded designs across consumer, industrial, and automotive after-market segments.
Key features include a Harvard RISC architecture with 35 single-cycle instructions, an internal 4MHz oscillator (calibrated to ±1%), a hardware USART for serial communication, an analog comparator with two inputs, a capture/compare/PWM module, and nanoWatt Technology for ultra-low-power sleep currents as low as 100nA typical. The 20 MHz instruction rate delivers 5 MIPS of throughput, while 16 I/O pins each support independent weak pull-ups, interrupt-on-change, and digital-only or analog-comparator routing.
The PIC16LF628A silicon integrates a precision 4 MHz internal RC oscillator, removing the need for external crystals in many designs. The on-chip comparator can generate interrupts, trigger timer capture, or wake the device from sleep. Brown-out reset (BOR) and power-on reset (POR) circuitry protect Flash integrity at low supply voltages, while the ICD2/ICD3 debug interface allows in-circuit programming and breakpoint debug through two reserved pins.
Typical applications include remote control transmitters, sensor interface nodes, low-power battery sensor hubs, small appliance controllers, and hobby robotics. Its 2.0V minimum supply also suits single-cell lithium or two-AA-battery products where voltage headroom is constrained.
When designing with this MCU, observe the 2.0V to 5.5V supply range and derate maximum Fosc above 4V (20 MHz @ 4V+; 4 MHz @ 2V). Reserve RA4/T0CKI and RA5/MCLR/VPP pin functions carefully, as they share I/O with programming/debugging functions. The 20-pin SSOP is a 0.65 mm pitch package that requires standard SMT reflow and inspection.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho PIC16LF628AT-I/SS — 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 PIC16LF628AT-I/SS (cùng hình factor và footprint) — khác nhau ở Internal Oscillator, Package, Core Architecture, Timers, ADC.
PIC16LF628A-I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF628AT-I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF628A-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F628A-I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F628AT-I/SS
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16LF627A-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF648A-I/SS
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16LF628AT-I/SS Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC16 8-bit RISC |
| Program Memory | 3.5 KB (2K x 14) Flash |
| RAM | 224 bytes |
| EEPROM | 128 bytes |
| Tần số xung maksimum | 20 MHz (5 MIPS) |
| Supply Voltage Range | 2.0 V to 5.5 V |
| I/O Pins | 16 |
| Hộp | 20-pin SSOP (0.209 in / 5.30 mm body) |
| Khoảng nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Internal Oscillator | 4 MHz calibrated, software-tunable |
| Communication Peripherals | 1x USART (hardware) |
| Timers | 3 (Timer0, Timer1, Timer2) |
| Capture/Compare/PWM | 1 ECCP module |
| Analog Comparators | 2 |
| ADC | None (no ADC on PIC16LF628A) |
| Sleep Current | 100 nA typical (nanoWatt) |
| Instruction Set | 35 instructions, single-cycle |
| Watchdog Timer | Yes (software-enabled) |
| In-Circuit Programming | ICSP via RA5/MCLR and RB6/RB7 |
| Brown-Out Reset | Yes (BOR) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC16LF628AT-I/SS
| Chân 1 | RA2/AN2 — Bidirectional I/O / analog comparator input |
| Chân 2 | RA3/AN3/CMP1 — Bidirectional I/O / comparator 1 output |
| Chân 3 | RA4/T0CKI — Bidirectional I/O (open-drain) / Timer0 clock input |
| Chân 4 | RA5/MCLR/VPP — Input-only / Master Clear (reset) / ICSP programming voltage |
| Chân 5 | VSS — Ground reference |
| Chân 6 | RB0/INT — Bidirectional I/O / external interrupt |
| Chân 7 | RB1/RX/DT — Bidirectional I/O / USART RX / synchronous data |
| Chân 8 | RB2/TX/CK — Bidirectional I/O / USART TX / synchronous clock |
| Chân 9 | RB3/CCP1 — Bidirectional I/O / Capture/Compare/PWM |
| Chân 10 | RB4/PGM — Bidirectional I/O / LVP programming |
| Chân 11 | RB5 — Bidirectional I/O |
| Chân 12 | RB6/PGC — Bidirectional I/O / ICSP clock |
| Chân 13 | RB7/PGD — Bidirectional I/O / ICSP data |
| Chân 14 | VDD — Positive supply (2.0V-5.5V) |
| Chân 15 | RA6/OSC2/CLKOUT — Bidirectional I/O / oscillator output |
| Chân 16 | RA7/OSC1/CLKIN — Bidirectional I/O / oscillator input |
| Chân 17 | RA0/AN0 — Bidirectional I/O / analog comparator input |
| Chân 18 | RA1/AN1 — Bidirectional I/O / analog comparator input |
| Chân 19 | VSS — Ground reference (digital) |
| Chân 20 | VDD — Positive supply (2.0V-5.5V) |
Ứng dụng tiêu biểu
PIC16LF628AT-I/SS phù hợp cho 6 Áp dụngs: Remote Control Transmitter, Battery-Powered Sensor Node, Small Appliance Controller, Automotive Aftermarket Accessory, Hobby Robotics and Education, LED Lighting Controller.
Remote Control Transmitter
The PIC16LF628AT-I/SS suits handheld IR/RF remote controls where low cost and low standby power dominate. Its nanoWatt Technology delivers typical sleep currents around 100 nA, allowing CR2032 coin-cell transmitters to ship with years of battery life while waiting for button activity. The 16 I/O pins comfortably drive a 4x4 matrix keypad, the hardware USART supports IR-modulated protocols, and the internal 4 MHz calibrated oscillator eliminates the external ceramic resonator, cutting BOM cost in a 20-pin SSOP that is small enough for thin remote housings. Code fits easily within the 3.5KB Flash for the state machine, button de-bounce, and rolling-code encryption. The LF 2.0V-5.5V range spans a wide Li-ion deployment zone, and the internal comparator with Timer1 can serve as a battery-low detector without an external ADC.
Được đề xuất
Battery-Powered Sensor Node
Wireless sensor nodes running on 2x AA or single-cell Li-coin cells benefit from the PIC16LF628AT-I/SS nanoWatt sleep current near 100 nA and 2.0V-5.5V LF supply range. With the Watchdog Timer disabled in sleep, the MCU consumes almost nothing until the on-chip analog comparator or interrupt-on-change wakes it for a sensor reading. The 3.5KB Flash holds the sensor driver, calibration table, and a lightweight RF protocol. The 20-pin SSOP occupies minimal PCB area, and the internal 4 MHz oscillator saves board space versus a discrete crystal. For periodic wake-and-transmit duty cycles below 1%, battery life easily exceeds 5 years at 2200 mAh. The same comparator plus Timer1 forms an inexpensive sigma-delta ADC for thermistor or moisture-bridge sensors without an external ADC chip.
Được đề xuất
Small Appliance Controller
Small appliances like coffee grinders, blenders, and countertop ovens integrate the PIC16LF628AT-I/SS as a cost-effective control MCU. The 20 MHz instruction rate delivers 5 MIPS throughput, sufficient for 50 Hz mains-zero-cross detection, triac phase-angle dimming, and RPM feedback from a Hall sensor input. The ECCP PWM module drives MOSFET gates for brushed DC motors, the hardware USART provides a service-port debug channel, and the 16 I/O pins route to keypad, LCD, relay drivers, and over-temperature sensors. The 20-pin SSOP is robust for hand-soldered rework at small production scale, and the 2.0V-5.5V supply range accommodates rectified-12V-rail-derived 5V regulators with brown-out margin. Code space is ample for the state machine, look-up tables for heater profiles, and safety interlocks.
Được đề xuất
Automotive Aftermarket Accessory
Inside automotive aftermarket modules such as alarm sensors, parking aids, and interior LED dimmers, the PIC16LF628AT-I/SS serves as the control MCU in the 20-pin SSOP footprint. The industrial -40C to +85C temperature rating is acceptable for cabin and trunk applications; for under-hood ECUs consider PIC16F with -40C to +125C. The 5V-tolerant I/O with weak pull-ups interfaces cleanly with opto-isolated automotive buses, and the analog comparator monitors reverse-battery and load-dump events. Code in 3.5KB Flash implements wake-on-CAN-LIN via the comparator, plus PWM for LED current regulation. LF voltage range handles the cranking dip from 6V to 9V, and brown-out reset prevents Flash corruption during load-dump transients when paired with a TVS clamp.
Được đề xuất
Hobby Robotics and Education
Hobby robotics platforms, educational kits, and DIY maker boards have used the PIC16F628A family for over a decade due to its simplicity, low cost, and breadboard-friendly 20-pin PDIP sibling. The PIC16LF628AT-I/SS in 20-pin SSOP serves compact surface-mount designs for line-following robots, simple servo controllers, and sensor-fusion boards. The 5 MIPS performance handles PID loops at 1 kHz update rates for hobby servos, while the ECCP PWM generates precision servo pulses. The USART bridges to Bluetooth or XBee modules for remote telemetry. With 16 I/O pins, it connects to bumper switches, IR range sensors, motor drivers, and status LEDs. Code space accommodates line-following algorithms, and the LF supply range supports LiPo packs down to 2.5V cut-off without regulator overhead.
Được đề xuất
LED Lighting Controller
Architectural and decorative LED lighting drivers embed the PIC16LF628AT-I/SS for DMX-512-style or analog 0-10V dimming control. The 20 MHz / 5 MIPS core comfortably handles WS2812B bit-banging at 800 kHz, while the ECCP PWM module drives constant-current LED strings up to 10 kHz without flicker. The 16 I/O pins route to multiple LED channels, button inputs, status LEDs, and a UART for protocol reception. The internal 4 MHz oscillator removes external crystal cost, and the 20-pin SSOP fits into slim aluminum-profile housings. LF 2.0V-5.5V operation simplifies designs using 24V-rail buck converters and 3.3V-rail MCU supplies. Code space accommodates color-space conversion, gamma correction tables, and addressable LED protocols for complex scenes.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LF628AT-I/SS — 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 | PIC16LF628A-I/SS | PIC16F628A-I/SS | PIC16F628AT-I/SS | PIC16LF627A-I/P | PIC16LF648A-I/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-pin SSOP | 20-pin SSOP - same | 20-pin SSOP - same | 20-pin SSOP - same | 20-pin PDIP - different (through-hole) | 20-pin SSOP - same |
| Program Memory (Flash) | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB | 1.75 KB (-50%) | 7 KB (+100%) |
| RAM | 224 bytes | 224 bytes | 224 bytes | 224 bytes | 224 bytes | 256 bytes (+14%) |
| EEPROM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 256 bytes (+100%) |
| Maximum Clock | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Supply Voltage Range | 2.0 V to 5.5 V (LF) | 2.0 V to 5.5 V (LF) | 4.5 V to 5.5 V (standard) | 4.5 V to 5.5 V (standard) | 2.0 V to 5.5 V (LF) | 2.0 V to 5.5 V (LF) |
| I/O Pins | 16 | 16 | 16 | 16 | 16 | 16 |
| Price (1k qty, USD) | $1.85 | $1.85 (tube) | $1.55 | $1.55 | $1.45 | $2.10 |
Bảo phân biệt quan trọng
- Extended low-voltage 2.0V-5.5V operation (vsPIC16F628A-I/SS)
- Internal 4 MHz calibrated oscillator eliminates external crystal (vsPIC16F84A-I/P)
- Double the program memory versus PIC16LF627A (vsPIC16LF627A-I/P)
Ghi chú thiết kế
Estimated: At 20 MHz and 5V VDD, the PIC16LF628AT-I/SS draws approximately 11 mA active current. At 32 kHz LF mode with sleep, sleep current drops to roughly 100 nA typical. For battery designs, duty-cycle sleep aggressively: enable WDT only as needed, switch to 31 kHz LF oscillator during sleep, and disable unused peripherals via PCON/CMCON registers. Always include a 100 nF decoupling cap within 5 mm of the VDD pin and a 10 uF bulk capacitor at the regulator output.
RA5/MCLR/VPP is input-only and shared with the reset and ICSP programming voltage. Do not drive RA5 from a low-impedance source during reset, or the device will fail to start. If MCLR is disabled (CONFIG MCLRE = 0), RA5 becomes a general-purpose input. Similarly, RB4 doubles as LVP programming entry - if LVP is enabled, an inadvertent low pulse at power-up can enter programming mode and halt application code. Recommend always enabling HV programming (LVP=OFF) in production firmware.
Place the 20-pin SSOP on a 0.65 mm-pitch land pattern with 0.4 mm-wide pads and a thermal relief spoke pattern. Reserve a 2x3 through-hole programming header footprint (5x1 with 0.1 in pitch) near the MCU for ICSP access during prototyping. Keep the ICSP traces (PGC/PGD) short, away from switching nodes, and use a series 100 ohm resistor on PGC and PGD to dampen ringing during programming. The 20-pin SSOP has a center VDD/VSS pair (pins 14, 5, 19) - use wide ground and power pours to maintain clean return paths.
RA4 is open-drain and requires an external pull-up for high-level output. Avoid using RA4 as a high-speed output or with capacitive loads above 50 pF. For USART communications above 57600 baud, route RX/TX traces over a continuous ground plane and add 22 ohm series resistors at the driver end to dampen reflections. The internal comparator has input leakage near 1 nA - for low-impedance sensors this is negligible, but high-impedance resistive dividers may need buffer amplifiers.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Industrial -40C to +85C temperature grade only; not AEC-Q100 qualified - for automotive use consider PIC16F628AT-I/SS in automotive-grade lots or PIC16F with -40C to +125C rating.
