PIC16F648A-I/SS - 8-bit MCU, 7KB Flash, 20MHz | Microchip
N.º da peça: PIC16F648A-I/SS ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $3.21 | $3,21 |
| 10 | $2.85 | $28,50 |
| 100 | $2.41 | $241,00 |
| 500 | $2.05 | $1.025,00 |
| 1.000 | $1.78 | $1.780,00 |
PIC16F648A-I/SS Visão geral
A microcontroller (MCU) is a single-chip computer containing a CPU, RAM, non-volatile program memory, and peripheral interfaces on one integrated die. The PIC16F648A belongs to Microchip's mid-range PIC16 family, positioned above the baseline PIC12/PIC16 baseline family and below the enhanced PIC18 family, and is part of the broader 8-bit microcontroller category within the embedded microcontroller market.
Key features of the PIC16F648A-I/SS include a 4 MHz internal oscillator (eliminating external crystal cost in many designs), an integrated USART for serial communications, a capture/compare/PWM (CCP) module, two analog comparators with a programmable voltage reference, a 10-bit ADC, nanoWatt power management, and 16 I/O pins. The device supports in-circuit serial programming (ICSP) for field updates.
The PIC16F648A-I/SS uses Microchip's modified Harvard RISC architecture with a 14-bit instruction word and 35 single-word instructions, making it easy to learn and program. The nanoWatt technology provides multiple power-saving modes (RUN, IDLE, SLEEP) with wake-on-interrupt capability, allowing the device to consume microamp-level current in sleep - ideal for battery-powered and energy-harvesting applications.
Typical applications include automotive body controllers, industrial appliance control, sensor signal conditioning with on-chip comparators, low-power remote sensors, small motor control via PWM/CCP, consumer white goods, and security system I/O expanders. The internal oscillator and integrated analog peripherals reduce BOM cost for cost-sensitive designs.
When designing with this device, ensure your C compiler or assembler targets the mid-range PIC16 core. The 20-pin SSOP footprint is hand-solderable and supports standard prototyping, while the -I suffix guarantees the industrial -40C to +85C operating temperature range.
This page synthesizes distributor stock data, drop-in compatible alternatives, and engineering guidance not found in the standalone Microchip datasheet - helping engineers verify compatibility, sourcing, and design trade-offs in a single view.
Alternativas drop-in para PIC16F648A-I/SS — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com PIC16F648A-I/SS (mesmo formato e footprint) — diferindo em Program Memory Size, Package, Program Memory Type, Core Architecture, Operating Temperature.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC16F628A-I/SS
✅ Drop-In✓ Em estoque
$1.41 / unidade
Ver ficha técnica →PIC16F627A-I/SS
✅ Drop-In✓ Em estoque
$1.12 / unidade
Ver ficha técnica →PIC16F648AT-I/SS
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC16F648A-I/SS Classificações máximas e características elétricas
| Core Architecture | PIC16 (8-bit RISC, 14-bit instruction word) |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data RAM | 256 bytes |
| Data EEPROM | 256 bytes |
| Maximum Clock Speed | 20 MHz (200 ns instruction cycle) |
| Internal Oscillator | 4 MHz (calibrated, ±1% typical) |
| Supply Voltage (VDD) | 2.0 V to 5.5 V |
| I/O Pins | 16 |
| Operating Temperature (I grade) | -40 C to +85 C |
| Encapsulamento | 20-pin SSOP (SS, 5.30 mm body) |
| Tipo de montagem | Surface Mount |
| Capture/Compare/PWM | 1 CCP module |
| Analog Comparators | 2 with programmable voltage reference |
| USART | 1 (Enhanced USART / AUSART) |
| ICSP (In-Circuit Serial Programming) | Yes |
| Power-Saving Modes | nanoWatt (RUN, IDLE, SLEEP) |
| Status RoHS | Compliant (Pb-free) |
| Nível MSL | 1 (unlimited floor life at <=30 C / 85% RH) |
Configuração de pinos do PIC16F648A-I/SS
| Pino 1 | RA5/MCLR/VPP — Digital I/O / Master Clear reset (active low) / Programming voltage |
| Pino 2 | RA0/AN0 — Digital I/O / Analog input channel 0 |
| Pino 3 | RA1/AN1 — Digital I/O / Analog input channel 1 |
| Pino 4 | RA2/AN2/VREF- — Digital I/O / Analog input channel 2 / ADC VREF- |
| Pino 5 | RA3/AN3/VREF+ — Digital I/O / Analog input channel 3 / ADC VREF+ |
| Pino 6 | RA4/T0CKI — Digital I/O (open-drain) / Timer0 clock input |
| Pino 7 | RA6/OSC2/CLKOUT — Digital I/O / Oscillator crystal output / Clock output |
| Pino 8 | RA7/OSC1/CLKIN — Digital I/O / Oscillator crystal input / External clock input |
| Pino 9 | VSS — Ground reference |
| Pino 10 | VDD — Positive supply voltage (2.0 V to 5.5 V) |
| Pino 11 | RB7/PGD — Digital I/O / ICSP data line |
| Pino 12 | RB6/PGC — Digital I/O / ICSP clock line |
| Pino 13 | RB5 — Digital I/O / interrupt-on-change |
| Pino 14 | RB4 — Digital I/O / interrupt-on-change |
| Pino 15 | RB3/CCP1 — Digital I/O / Capture Compare PWM channel 1 |
| Pino 16 | RB2 — Digital I/O / interrupt-on-change |
| Pino 17 | RB1/RX/DT — Digital I/O / EUSART RX / Synchronous data |
| Pino 18 | RB0/INT/TX/CK — Digital I/O / External interrupt / EUSART TX / Synchronous clock |
| Pino 19 | RC7/RX/DT — Digital I/O / EUSART RX / Synchronous data |
| Pino 20 | RC6/TX/CK — Digital I/O / EUSART TX / Synchronous clock |
Aplicações típicas
PIC16F648A-I/SS é adequado para 6 aplicaçãos: Industrial Appliance Control, Automotive Body Electronics, Low-Power Remote Sensor Node, Small DC Motor Control (PWM), Consumer White Goods User Interface, Security System I/O Expander.
Industrial Appliance Control
The PIC16F648A-I/SS fits industrial appliance control applications because its 16 GPIO, integrated EUSART, and 10-bit ADC deliver the mixed signal capability required for sensor feedback and motor relay drive. With the internal oscillator and 256 bytes EEPROM, the MCU can store calibration parameters without external EEPROM. The 20 MHz core executes control loops fast enough for real-time thermal regulation in ovens, washing machine motor sequencing, and HVAC damper control. Compared with discrete logic, the integrated analog comparators and programmable VREF replace op-amp circuitry, cutting BOM cost. Engineers should design with WDT reset enabled and verify brown-out behavior at the 2.0 V VDD minimum to ensure robust field operation across -40 C to +85 C.
Recomendado
Automotive Body Electronics
The PIC16F648A-I/SS suits automotive body electronics modules such as lighting controllers, door lock actuators, and climate control panels because its -40 C to +85 C industrial temperature range covers cabin environments and its EUSART supports LIN-bus slave communication via a LIN transceiver. The 7 KB Flash stores application firmware plus bootloader, while 256 bytes EEPROM holds configuration and fault logs that survive battery disconnect events. nanoWatt sleep current under 1 uA preserves automotive battery during long parking periods. For under-hood applications requiring AEC-Q100 Grade 1 or 2, migrate to the PIC16F648A-E automotive variant or to PIC16F18444 with automotive qualification.
Recomendado
Low-Power Remote Sensor Node
The PIC16F648A-I/SS excels in battery-powered remote sensor nodes because its nanoWatt sleep current below 1 uA enables multi-year battery life when duty-cycled, and its internal 4 MHz oscillator eliminates the quiescent draw of an external crystal. Two on-chip analog comparators with programmable voltage reference allow direct interface to bridge sensors and thermistors without external op-amps, while the EUSART provides wireless module connection for Sub-GHz transceivers. With 256 bytes EEPROM, calibration constants persist across battery swaps. A typical 3.6 V Li-SOCl2 cell at 0.1% duty cycle sustains operation for 10+ years in remote metering, agricultural soil monitoring, and structural health sensor applications.
Recomendado
Small DC Motor Control (PWM)
The PIC16F648A-I/SS drives small DC motors via its Capture/Compare/PWM (CCP) module producing up to 10-bit PWM resolution at 20 MHz, sufficient for brushed DC motor speed control in fans, pumps, and small actuators. The enhanced CCP supports half-bridge and full-bridge PWM modes when paired with gate drivers, while integrated analog comparators enable current sensing without external circuitry. Programmable dead-band generation prevents shoot-through in H-bridge designs. The 16 GPIO accommodate direction inputs, tachometer feedback, and fault interrupts. For BLDC motor applications requiring sensorless back-EMF zero-cross detection, the on-chip comparators replace dedicated BLDC controllers in cost-sensitive designs.
Recomendado
Consumer White Goods User Interface
The PIC16F648A-I/SS powers user interfaces on consumer white goods such as microwave ovens, washing machines, and dishwashers because its 16 GPIO support direct LED matrix drive, capacitive touch sensing via comparators, and 7-segment display multiplexing without external drivers. The internal 4 MHz oscillator eliminates crystal cost in these price-sensitive designs, while the -40 C to +85 C industrial range handles kitchen temperature swings. EEPROM stores user preferences and last-cycle state across power cycles. The 35-instruction RISC core is easily programmed in C with Microchip's free XC8 compiler, accelerating time-to-market for global appliance OEMs requiring 100+ country variants.
Recomendado
Security System I/O Expander
The PIC16F648A-I/SS functions as an intelligent I/O expander in security alarm panels because its 16 GPIO support PIR sensor inputs, door/window contact loops, keypad scanning, and siren driver output within a single chip. The internal analog comparators with programmable reference detect balanced-line tampering on long sensor cable runs - a key feature distinguishing it from dumb shift-register expanders. EUSART communication to the main panel MCU enables remote firmware updates via ICSP. nanoWatt sleep mode under 1 uA is critical for battery-backed alarm systems that must operate for weeks on backup power after AC mains failure, while 256 bytes EEPROM preserves zone configuration and event logs.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC16F648A-I/SS — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC16F628A-I/SS | PIC16F627A-I/SS | PIC16F648AT-I/SS | PIC16F648A-I/SO |
|---|---|---|---|---|---|
| Brand | 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 SOIC - cross-package |
| Program Memory (Flash) | 7 KB (4K x 14) | 3.5 KB (-50%) | 1.75 KB (-75%) | 7 KB (same) | 7 KB (same) |
| Data RAM | 256 bytes | 224 bytes (-12%) | 128 bytes (-50%) | 256 bytes (same) | 256 bytes (same) |
| Data EEPROM | 256 bytes | 128 bytes (-50%) | 128 bytes (-50%) | 256 bytes (same) | 256 bytes (same) |
| Maximum Clock Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| I/O Pins | 16 | 16 | 16 | 16 | 16 |
| Operating Temperature | -40 C to +85 C (industrial) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Unit Price (qty 1, USD) | $3.21 | ~$3.05 | ~$2.95 | ~$3.21 (same die) | ~$3.21 |
Principais diferenciais
- Largest Flash in PIC16F62x family at SSOP-20 footprint (vs PIC16F628A-I/SS)
- Doubled EEPROM for non-volatile configuration storage (vs PIC16F628A-I/SS)
- Backward-compatible superset within PIC16F62x family (vs PIC16F627A-I/SS)
- Internal oscillator eliminates external crystal cost (vs External crystal-required PIC designs)
Notas de projeto
The PIC16F648A-I/SS operates from 2.0 V to 5.5 V VDD. Estimated: at 20 MHz, ICC active is approximately 11 mA typical at 5V, so a 3.3V LDO with at least 30 mA headroom (e.g., MCP1700) is recommended. Add a 100 nF decoupling capacitor as close as possible to VDD pin 17, plus a bulk 10 uF tantalum or ceramic at the regulator output. For sleep-current-critical battery designs, verify that all I/O pins are configured as inputs with no floating state and that WDT is disabled, as floating inputs can leak several uA combined.
The 20-pin SSOP package has a 0.65 mm pin pitch. Estimated: PCB land pattern should follow the SSOP standard with 0.30 mm lead width and 1.00 mm pad length to ensure reliable solder fillets. Place the ICSP connector (PGD/RB7 pin 19, PGC/RB6 pin 18, MCLR/RA5 pin 1, VSS pin 9, VDD pin 17) at the board edge for in-circuit programming access. Keep the MCLR pull-up resistor within 5 mm of pin 1 and route the trace directly without stubs to avoid reset glitches during EMI events.
Three common pitfalls with the PIC16F648A-I/SS: (1) Brown-Out Reset (BOR) is enabled by default in configuration bits - leave it enabled unless you have a very specific reason, as VDD droop below 2.0 V without BOR can corrupt program execution and EEPROM writes. (2) The internal 4 MHz oscillator is factory-calibrated but drift is approximately ±1% over temperature - for UART communications requiring >2% accuracy, use an external crystal. (3) EEPROM endurance is rated 100K write cycles minimum - implement wear-leveling or commit only on state change, not in tight loops.
For designs using the analog comparators or ADC, place analog reference pins (RA2/VREF-, RA3/VREF+) and analog inputs (RA0-RA3) on the opposite side of the PCB from noisy digital traces such as the oscillator, PWM outputs, or EUSART lines. Estimated: keep analog traces at least 3 mm away from switching signals to avoid coupling. If using the internal 4 MHz oscillator, route the OSC1/OSC2 traces short and surrounded by ground pour to minimize radiated EMI that could disturb analog readings.
Informações de conformidade
RoHS compliant per Microchip product page. Industrial -I temperature grade only; not AEC-Q100 qualified - choose PIC16F648A-E for automotive. Conflict-minerals compliant per Microchip supply chain disclosures.
