PIC16F628T-20I/SS - 8-Bit 20MHz 3.5KB Flash MCU | Microchip
부품 번호: PIC16F628T-20I/SS ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $3.18 | $3.18 |
| 10 | $2.86 | $28.60 |
| 100 | $2.45 | $245.00 |
| 500 | $2.1 | $1,050.00 |
| 1,000 | $1.78 | $1,780.00 |
PIC16F628T-20I/SS 개요
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (flash or ROM), volatile data memory (RAM), EEPROM for persistent user data, and configurable digital peripherals. PIC16F-series MCUs use Microchip's enhanced mid-range RISC core with only 35 single-word instructions, so almost every instruction executes in one instruction cycle. The PIC16F628T-20I/SS sits within the hypernym hierarchy: 8-bit microcontroller -> PIC16 mid-range MCU -> PIC16F62x family -> flash-based PIC MCU -> Microchip PIC microcontroller portfolio.
Key features of the PIC16F628T-20I/SS include: an integrated 4 MHz internal oscillator (no external crystal required for many designs); two analog comparators with a programmable on-chip voltage reference; a USART module for asynchronous/synchronous serial communication; a 16-bit capture/compare/PWM module and an 8-bit timer/counter; flash program memory with 100K endurance cycles; and brown-out reset (BOR), power-on reset (POR), power-up timer (PWRT), oscillator start-up timer (OST), and watchdog timer (WDT) with a dedicated on-chip RC oscillator.
The architecture uses a Harvard bus (separate program and data memory paths), allowing instruction fetch and operand read to occur in the same cycle. CMOS process technology gives the part its low-power characteristics, including very low power-down current typical of PIC mid-range parts and several oscillator operating modes (internal RC, external RC, crystal, and LP modes) selected by configuration fuses.
Typical applications include low-cost embedded control nodes (appliance controllers, sensor hubs, simple motor/solenoid drivers), automotive body-electronics subsystems (interior lighting, fan control, sensor interfaces), hobby and education boards, replacement of legacy PIC16F84/PIC16F627 designs requiring more RAM and EEPROM, and battery-powered instrumentation where the internal oscillator and brown-out reset are advantageous.
When designing with this part, use the 20-pin SSOP land pattern and respect the I/O current-source/-sink limits when driving LEDs directly. MPLAB X IDE and MPLAB XC8 (or legacy Hi-Tech PICC) are the recommended toolchains, and the PICkit 5 in-circuit debugger supports the PIC16F62x family for production-ready programming.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives, comparison parameters, and practical design notes that are not found on the manufacturer datasheet alone.
드롭인 대체품: PIC16F628T-20I/SS — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: PIC16F628T-20I/SS (동일 폼 팩터 및 풋프린트) — 차이점: Package, Core Architecture, Internal Oscillator, Program Memory (Flash), RoHS Status.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
PIC16F628-20I/SS
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
PIC16F628T-20E/SS
✅ 드롭인✓ 재고 있음
$2.5 / 개
데이터시트 보기 →PIC16F628A-I/SS
✅ 드롭인✓ 재고 있음
$1.41 / 개
데이터시트 보기 →PIC16F627A-I/SS
✅ 드롭인✓ 재고 있음
$1.12 / 개
데이터시트 보기 →PIC16F88-I/SS
✅ 드롭인✓ 재고 있음
$3.08 / 개
데이터시트 보기 →PIC16F628T-20I/SS 최대 정격 & 전기적 특성
| Manufacturer | Microchip Technology |
| Series | PIC16F |
| Core | PIC16 mid-range 8-bit RISC |
| Instruction Set Width | 14-bit |
| Number of Instructions | 35 single-word |
| Program Memory Type | Flash |
| Program Memory Size | 3.5 KB (2K x 14) |
| RAM Size | 224 bytes |
| EEPROM Size | 128 bytes |
| Maximum Clock Speed | 20 MHz |
| Instruction Cycle | 200 ns |
| Supply Voltage Range | 3.0 V to 5.5 V |
| Number of I/O Pins | 16 |
| 동작 온도 | -40 °C to +85 °C (Industrial) |
| 패키지 | 20-pin SSOP (5.30 mm) |
| 실장 유형 | Surface Mount |
| Internal Oscillator | 4 MHz (typical) |
| On-chip Peripherals | Brown-out Reset, Power-on Reset, Watchdog Timer, 2x Analog Comparators, USART, 1x 16-bit CCP, 1x 8-bit Timer |
| RoHS 상태 | Compliant (Pb-free, Matte-Tin finish) |
PIC16F628T-20I/SS 핀 구성
| 핀 1 | RA2/AN2/VREF — GPIO RA2 / analog comparator input / voltage reference |
| 핀 2 | RA3/AN3/CMP1 — GPIO RA3 / analog comparator input / comparator 1 output |
| 핀 3 | RA4/AN4/T0CKI — GPIO RA4 / comparator input / Timer0 clock input |
| 핀 4 | RA5/MCLR/VPP — GPIO RA5 / Master Clear (reset) / programming voltage |
| 핀 5 | VSS — Ground reference |
| 핀 6 | RB0/INT — GPIO RB0 / external interrupt |
| 핀 7 | RB1/RX/DT — GPIO RB1 / USART RX / I2C data |
| 핀 8 | RB2/TX/CK — GPIO RB2 / USART TX / I2C clock |
| 핀 9 | RB3/CCP1 — GPIO RB3 / Capture-Compare-PWM output |
| 핀 10 | RB4/PGM — GPIO RB4 / low-voltage programming |
| 핀 11 | RB5 — GPIO RB5 |
| 핀 12 | RB6/T1OSO/T1CKI — GPIO RB6 / Timer1 oscillator output / Timer1 clock input |
| 핀 13 | RB7/T1OSI — GPIO RB7 / Timer1 oscillator input |
| 핀 14 | VDD — Positive supply voltage (3.0 V to 5.5 V) |
| 핀 15 | OSC2/CLKOUT — Crystal/ceramic resonator output / clock output |
| 핀 16 | OSC1/CLKIN — Crystal/ceramic resonator input / external clock input |
| 핀 17 | RA0/AN0 — GPIO RA0 / analog comparator input |
| 핀 18 | RA1/AN1 — GPIO RA1 / analog comparator input |
| 핀 19 | RA6/OSC2 — GPIO RA6 / alternate oscillator output |
| 핀 20 | RA7/OSC1 — GPIO RA7 / alternate oscillator input |
일반적인 애플리케이션
PIC16F628T-20I/SS 적합 용도: 6 애플리케이션s: Appliance Control Boards, Automotive Body Electronics, Battery-Powered Sensor Hubs, Industrial Sensor Interface Boards, Hobby Electronics and Education, Replacement of Legacy PIC16F84 Designs.
Appliance Control Boards
The PIC16F628T-20I/SS is well-suited for low-cost appliance controller boards because it integrates a USART for HMI/keypad communication, two analog comparators for sensor-threshold detection (temperature, water level), and 16 GPIO lines sufficient for relay drivers, indicator LEDs, and a switch matrix. Its 3.0-5.5 V supply range and internal 4 MHz oscillator eliminate the external crystal and voltage regulator complexity, shrinking BOM cost in washing machines, microwave ovens, and dishwashers.
추천
Automotive Body Electronics
The PIC16F628T-20I/SS handles small automotive body-electronics nodes such as interior lighting controllers, mirror adjusters, and HVAC mode switches because its 16 GPIO lines can directly sink LED currents, and its industrial -40C to +85C temperature grade covers cabin-environment deployments. Brown-out reset and watchdog timer maintain reliable operation across cranking transients, while the flash-based program memory supports OTA-style firmware updates via the USART boot loader path.
추천
Battery-Powered Sensor Hubs
For battery-powered sensor hubs, the PIC16F628T-20I/SS operates down to 3.0 V from two AA cells and provides low-power sleep modes typical of PIC mid-range MCUs, enabling multi-year battery life when the CPU wakes only briefly to read a sensor and transmit over USART. The internal 4 MHz oscillator removes the always-on current of an external crystal, and the on-chip analog comparators can directly threshold battery voltage without waking the ADC path.
추천
Industrial Sensor Interface Boards
Industrial sensor-interface boards use the PIC16F628T-20I/SS to read digital sensors (Hall-effect, optical encoders, proximity switches), apply calibration in firmware, and stream processed data over RS-232/RS-485 via the on-chip USART. The watchdog timer detects firmware hangs in unattended installations, while the 128-byte EEPROM stores calibration constants and serial numbers for traceability. The SSOP-20 footprint also suits compact DIN-rail-mounted modules.
추천
Hobby Electronics and Education
The PIC16F628T-20I/SS remains a popular PIC for hobbyist boards and university embedded-systems courses because its 35 single-word instruction set is easy to teach, MPLAB X IDE with XC8 compiler is free, and the PICkit 5 programmer/debugger is widely available. The internal oscillator simplifies first-time bring-up, while the USART allows students to print debug output to a terminal - a key teaching workflow.
추천
Replacement of Legacy PIC16F84 Designs
Many legacy designs that use the older PIC16F84 or PIC16F84A can be upgraded to the PIC16F628T-20I/SS in the same 20-pin SSOP footprint, gaining 4x more flash (3.5 KB vs 1 KB), more RAM (224 B vs 68 B), and on-chip EEPROM (128 B) that the F84 lacks. The PIC16F628T-20I/SS also adds a USART and analog comparators, enabling feature expansion without changing the PCB. Code migration requires recompiling with XC8 for the PIC16F628 header file.
추천
추천 제품 요약
엔지니어링 참조 데이터: PIC16F628T-20I/SS — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | PIC16F628-20I/SS | PIC16F628T-20E/SS | PIC16F628A-I/SS | PIC16F627A-I/SS | PIC16F88-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 SSOP - same | 20-pin SSOP - same |
| Program Flash | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB | 1.75 KB | 3.5 KB (7 KB addressable) |
| RAM | 224 bytes | 224 bytes | 224 bytes | 224 bytes | 128 bytes | 368 bytes |
| EEPROM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 256 bytes |
| Max Clock Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Supply Voltage | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 2.0 V to 5.5 V |
| Operating Temperature | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C | -40 °C to +125 °C (Extended) | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C |
| ADC | None (comparators only) | None | None | None | None | 10-bit ADC, 7 channels |
주요 차별점
- Tape-and-reel packaging for high-volume SMT assembly (vs PIC16F628-20I/SS)
- Extended temperature variant available in same SSOP-20 footprint (vs PIC16F628T-20I/SS vs PIC16F628T-20E/SS)
- A-revision silicon provides modernized interrupt controller (vs PIC16F628A-I/SS)
설계 노트
Place a 0.1 µF decoupling capacitor as close as possible to the VDD pin (pin 14) and a bulk capacitor (e.g., 10 µF tantalum or ceramic) at the board power entry. For battery-powered designs, the PIC16F628T-20I/SS supports operation down to 3.0 V, but verify that the BOR threshold is configured to match the minimum battery voltage to avoid spurious resets during brown-out. The internal 4 MHz oscillator eliminates the need for an external crystal in most applications, reducing both BOM cost and quiescent current.
Route the MCLR pin (pin 4) carefully - it is shared with the VPP programming voltage input, and a long trace or large capacitance can impede in-circuit programming with the PICkit 5. Keep the MCLR trace short and add the typical 10 kΩ pull-up to VDD. If using the internal oscillator, leave OSC1/OSC2 (pins 15-16) as no-connects or tie OSC1 to ground through 10 kΩ to avoid noise pickup. Add a ground pour under the SSOP-20 footprint for thermal dissipation.
Estimated: at 20 MHz with VDD = 5 V, the PIC16F628T-20I/SS typically draws 10-15 mA active current. At 3.3 V and 4 MHz internal oscillator, expect 1-2 mA active current. Sleep current is typically < 1 µA but varies by temperature and configuration-fuse settings. A common design pitfall is forgetting to configure the watchdog timer postscaler; the WDT defaults to the longest timeout (~2.3 s) and may unexpectedly reset the MCU in time-critical loops. Always clear the WDTCON register properly or disable WDT in configuration bits if not needed.
When using the USART (RB1/RX, RB2/TX) at high baud rates (≥ 115200), keep the traces short and avoid routing them parallel to noisy switching lines. Add a series resistor (10-100 Ω) on TX if the receiver is more than a few centimeters away, to damp ringing. The analog comparators are sensitive to supply noise; if using them for sensor thresholding, add a small RC filter (1 kΩ + 100 nF) on the input pin to reject high-frequency interference that could cause false comparator trips.
규정 준수 정보
RoHS-compliant Pb-free (matte-tin) finish per Microchip product page. Industrial temperature grade -40C to +85C (I-suffix); E-suffix variant PIC16F628T-20E/SS provides extended -40C to +125C. AEC-Q100 qualification status is not explicitly stated for the standard I-suffix part.
