PIC16F648A-E/SS - 8-Bit 20MHz MCU 7KB Flash SSOP-20 | Microchip
N.º de pieza: PIC16F648A-E/SS ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $2.05 | $2,05 |
| 10 | $1.78 | $17,80 |
| 100 | $1.52 | $152,00 |
| 500 | $1.31 | $655,00 |
| 1.000 | $1.14 | $1.140,00 |
PIC16F648A-E/SS Descripción general
An 8-bit microcontroller is a small, self-contained computing element that integrates a CPU, non-volatile program memory, working RAM, and I/O peripherals on a single silicon die; it sits within the broader category of microcontrollers (MCU), which in turn belongs to embedded processors and digital semiconductors. The PIC architecture uses a Harvard RISC core with only 35 single-word instructions and 200 ns instruction execution at 20 MHz, which simplifies firmware development while delivering deterministic timing for embedded control loops.
Key features include an internal 4 MHz oscillator that allows the MCU to operate without an external crystal, a wide 2.0V-5.5V supply range with nanoWatt power management for sleep currents under 1 uA typical, an active-high MCLR reset, and in-circuit serial programming (ICSP) via two pins. The device supports up to 16 digital I/O lines depending on package, 10-bit ADC alternatives from the family, and brown-out reset plus power-on reset for reliable start-up.
The PIC16F648A is built on Microchip's enhanced mid-range 14-bit instruction set, is upwards compatible with the PIC16F628, PIC16C62XA, PIC16C5X, and PIC12CXXX devices, and uses self-programmable Flash memory for field updates. Its analog resources - two comparators plus a programmable voltage reference - make it equally comfortable in digital glue logic or mixed-signal front-end roles.
Typical applications include automotive body and interior modules, white goods and appliance control, industrial sensor conditioning, security and access peripherals, and general-purpose remote-control or sensor nodes where a small, low-power MCU with on-chip EEPROM and analog is required. Designers choose this part when the application needs more analog capability than a basic PIC16F627/628, but does not require the larger memories of PIC18 devices.
When laying out a board, place a 100 nF decoupling capacitor as close as possible to VDD, keep the ICSP lines isolated from high-current traces, and respect the MCLR pull-up design rule for reliable in-system programming. For battery-backed designs, switch to the 4 MHz internal oscillator and use Sleep mode with nanoWatt features to drop average current well below 1 mA.
This page consolidates distributor pricing as of 2026-09-21, drop-in pin-compatible alternatives from Microchip and competitor makers, and design notes drawn from Microchip application literature that are not aggregated on a single distributor page.
Alternativas directas para PIC16F648A-E/SS — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con PIC16F648A-E/SS (mismo factor de forma y huella) — difiere en Internal Oscillator, Package, Core Architecture, RoHS Status, I/O Pins.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC16F648A-I/SS
✅ Sustitución directa✓ En stock
$1.78 / unidad
Ver hoja de datos →PIC16F628A-I/SS
✅ Sustitución directa✓ En stock
$1.41 / unidad
Ver hoja de datos →PIC16F627A-I/SS
✅ Sustitución directa✓ En stock
$1.12 / unidad
Ver hoja de datos →PIC16F648A-E/SO
✅ Sustitución directa✓ En stock
$2.55 / unidad
Ver hoja de datos →PIC16F648A-I/SO
✅ Sustitución directa✓ En stock
$2.1 / unidad
Ver hoja de datos →PIC16F648A-E/SS Valores máximos y características eléctricas
| Core Architecture | PIC 8-bit Harvard RISC |
| Instruction Set Width | 14-bit |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| RAM | 256 bytes |
| EEPROM Data Memory | 256 bytes |
| Maximum CPU Frequency | 20 MHz |
| Instruction Execution Time | 200 ns at 20 MHz |
| Supply Voltage (VDD) | 2.0 V to 5.5 V |
| I/O Pins | 16 (varies by package) |
| Internal Oscillator | 4 MHz (on-chip, software-selectable) |
| USART | 1 |
| CCP Modules | 1 (Capture / Compare / PWM) |
| Analog Comparators | 2 |
| Programmable Voltage Reference | Yes (on-chip, for comparators) |
| Timers | Timer0, Timer1, Timer2 (per datasheet) |
| Watchdog Timer | Yes (WDT) |
| Brown-Out Reset (BOR) | Yes |
| Power-On Reset (POR) | Yes |
| In-Circuit Serial Programming (ICSP) | Yes (2-wire) |
| Encapsulado | 20-pin SSOP (5.30 mm body) |
| Tipo de montaje | Surface Mount |
| Temperatura de funcionamiento | -40 C to +125 C (E = extended) |
| RoHS | Compliant (lead-free per Microchip product page) |
Configuración de pines de PIC16F648A-E/SS
| Pin 1 | RA0/AN0 — Bidirectional I/O / analog comparator input |
| Pin 2 | RA1/AN1 — Bidirectional I/O / analog comparator input |
| Pin 3 | RA2/AN2/VREF- — Bidirectional I/O / analog input / CVREF- |
| Pin 4 | RA3/AN3/VREF+ — Bidirectional I/O / analog input / CVREF+ |
| Pin 5 | RA4/T0CKI — Bidirectional I/O / Timer0 clock input |
| Pin 6 | RA5/MCLR/VPP — I/O / Master Clear (reset) / programming voltage |
| Pin 7 | RA6/OSC2/CLKOUT — I/O / crystal oscillator output / Fosc/4 output |
| Pin 8 | RA7/OSC1/CLKIN — I/O / crystal oscillator input / external clock in |
| Pin 9 | VSS — Ground reference |
| Pin 10 | RB0/INT — Bidirectional I/O / external interrupt |
| Pin 11 | RB1/RX/DT — I/O / USART RX / synchronous data |
| Pin 12 | RB2/TX/CK — I/O / USART TX / synchronous clock |
| Pin 13 | RB3/CCP1 — I/O / Capture-Compare-PWM channel 1 |
| Pin 14 | RB4/PGM — I/O / LVP programming |
| Pin 15 | RB5 — Bidirectional I/O |
| Pin 16 | RB6/PGC — I/O / ICSP clock (debug) |
| Pin 17 | RB7/PGD — I/O / ICSP data (debug) |
| Pin 18 | VSS — Ground reference |
| Pin 19 | VDD — Positive supply voltage |
| Pin 20 | VDD — Positive supply voltage |
Aplicaciones típicas
PIC16F648A-E/SS es adecuado para 6 aplicacións: Automotive Body and Interior Modules, White Goods and Appliance Control, Industrial Sensor Conditioning and Front-Ends, Security and Access Control Peripherals, Remote Control and Consumer IR/RF Nodes, General-Purpose Digital Glue and Logic Replacement.
Automotive Body and Interior Modules
The PIC16F648A-E/SS is a strong fit for automotive body and interior electronic modules because it integrates a USART, a CCP module, two comparators, and 256 bytes of EEPROM in a 20-pin SSOP footprint. The extended -40 C to +125 C temperature grade allows it to operate reliably in cabin and under-hood-adjacent environments. With the internal 4 MHz oscillator enabled, the part can run a LIN-slave or simple switch-monitoring firmware with no external crystal, lowering BOM cost. A typical design places the MCU between a CAN/LIN transceiver and a relay or motor driver, where the PIC reads switch inputs, debounces them, and drives outputs through the CCP PWM. Note that this part is NOT AEC-Q100 qualified, so for safety-critical automotive subsystems consider an AEC-Q100-qualified PIC16F variant.
Recomendado
White Goods and Appliance Control
White-goods appliances such as washing machines, dishwashers, refrigerators, and microwave ovens need a small, low-cost MCU that can run a user interface, drive a display or buzzer, and read temperature/level sensors - which is exactly the role the PIC16F648A-E/SS fills. The two on-chip analog comparators and the programmable voltage reference let the part directly interface thermistor divider bridges without an external op-amp, while the USART connects to an LED-driver or display controller. The 256 bytes of EEPROM are sufficient for storing user settings, cycle counts, and fault logs across power cycles. Power consumption is minimal in Sleep mode thanks to nanoWatt technology, which is essential for battery-backed clock and timer functions. The 20-pin SSOP package is well suited to hand-solder-friendly prototyping and high-volume SMT assembly.
Recomendado
Industrial Sensor Conditioning and Front-Ends
In industrial sensor-conditioning modules the PIC16F648A-E/SS acts as the local data-acquisition controller: its two comparators plus programmable voltage reference digitize analog sensor signals, the USART streams the result to a PLC or gateway, and the EEPROM stores calibration constants. The 20 MHz instruction cycle supports 10 ms control-loop rates for slow process variables such as temperature, pressure, and flow. The extended temperature grade is important for factory-floor cabinets where ambient can reach 70-85 C. Galvanic isolation between the MCU and the field-bus is easily added by placing an optocoupler or digital isolator on the USART lines. The wide 2.0-5.5 V supply range lets the same firmware run from a 3.3 V or 5 V rail, simplifying design reuse across product variants.
Recomendado
Security and Access Control Peripherals
Access-control readers, door controllers, and simple alarm keypads use the PIC16F648A-E/SS as a low-power scan-and-decode engine. The CCP module generates the 125 kHz or 13.56 MHz carrier for RFID proximity cards, while the comparators detect the returning modulated signal. The USART connects to a downstream controller or a wireless module, and the 256-byte EEPROM stores user credentials or device identifiers. The internal oscillator eliminates the need for an external crystal on the access reader PCB, reducing both cost and tamper surface. Sleep current below 1 uA in nanoWatt mode allows the reader to be powered from a small backup battery for months during AC outages. The SSOP-20 footprint is small enough to fit inside standard EU 55 mm switch boxes.
Recomendado
Remote Control and Consumer IR/RF Nodes
Battery-powered remote controls, IR/RF sensor nodes, and small consumer peripherals are typical applications for the PIC16F648A-E/SS because the part draws only microamps in Sleep and can wake from an external interrupt in microseconds. The CCP module produces accurate PWM or timing marks for IR protocols, while the internal 4 MHz oscillator removes the external crystal that would otherwise consume board space. The 256-byte EEPROM stores device pairing data, and the USART optionally links to a 2.4 GHz transceiver for bidirectional remotes. The 2.0 V minimum supply voltage allows a single CR2032 cell (3 V nominal) to power the design. The SSOP-20 package keeps the PCB small enough to fit inside a keyfob or wall-switch housing.
Recomendado
General-Purpose Digital Glue and Logic Replacement
When designers need to replace discrete logic, timers, or small state machines, the PIC16F648A-E/SS provides a flexible, reprogrammable alternative at a similar per-piece cost. The USART implements asynchronous serial, the CCP module generates PWM, and the two comparators plus voltage reference form a programmable threshold detector. Programming is straightforward via ICSP on two pins, which means the same firmware can be revised without re-spinning the PCB. The 7 KB Flash gives room for a full state machine plus a small diagnostic UART command set. Designers can shrink an entire glue-logic PCB to a single SSOP-20 footprint, freeing board space and reducing assembly cost.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC16F648A-E/SS — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC16F648A-I/SS | PIC16F628A-I/SS | PIC16F627A-I/SS | PIC16F648A-E/SO | PIC16F648A-I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SSOP-20 | SSOP-20 - same | SSOP-20 - same | SSOP-20 - same | SOIC-20 (wider body, same pinout) | SOIC-20 (wider body, same pinout) |
| Flash Program Memory | 7 KB | 7 KB | 3.5 KB | 1.75 KB | 7 KB | 7 KB |
| RAM | 256 bytes | 256 bytes | 224 bytes | 128 bytes | 256 bytes | 256 bytes |
| EEPROM | 256 bytes | 256 bytes | 128 bytes | 128 bytes | 256 bytes | 256 bytes |
| Max CPU Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Supply Voltage | 2.0 V to 5.5 V | 2.0 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 | 2.0 V to 5.5 V |
| Operating Temperature | -40 C to +125 C (E grade) | -40 C to +85 C (I grade) | -40 C to +85 C (I grade) | -40 C to +85 C (I grade) | -40 C to +125 C (E grade) | -40 C to +85 C (I grade) |
Diferenciadores clave
- Highest-density Flash in the PIC16F6xx SSOP-20 family (frente a PIC16F628A-I/SS)
- Wider 2.0 V-5.5 V supply range than earlier PIC16F62x parts (frente a PIC16F627A-I/SS)
- Pin-compatible with PIC16F628A and PIC16F627A (frente a PIC16F628A-I/SS)
Notas de diseño
Place a 100 nF ceramic decoupling capacitor as close as possible to each VDD pin (pins 19 and 20 on the SSOP-20) and a single 10 uF bulk capacitor on the same node. Estimated: at 20 MHz with all peripherals active the part draws approximately 11 mA from 5 V; adding decoupling within 5 mm of the VDD pins keeps supply ripple below 50 mVpp on transients. For battery designs enable nanoWatt Sleep mode with the internal 4 MHz oscillator off, which drops quiescent current below 1 uA typical.
Keep the ICSP lines PGC (RB6, pin 16) and PGD (RB7, pin 17) free of series resistors above 470 ohm so a programmer can drive them directly; if isolation is required use jumpers or 0 ohm links. MCLR (pin 6) needs a 10 kohm pull-up to VDD; do not leave it floating or the device will randomly reset. The SSOP-20 thermal pad is not present on this package, but exposed copper on both top and bottom layers connected to GND improves thermal performance by approximately 10-15 percent.
The 20 MHz maximum frequency is only valid when VDD is above approximately 4.5 V per the datasheet; below 4.5 V the maximum Fosc derates linearly to 4 MHz at 2.0 V. Brown-Out Reset (BOR) defaults vary by configuration bit - explicitly enable BOR in CONFIG to avoid marginal-supply firmware corruption. When migrating firmware from PIC16F628A or PIC16F627A, the additional comparator registers and CVREF configuration bits must be initialized even if unused, otherwise the comparators can draw extra current and create phantom interrupts.
Long ISP/PGC-PGD traces pick up noise that can cause programming failures - route them as short as possible, keep them away from switching regulator inductors, and add 10 kohm pull-downs on PGD and pull-up on PGC to prevent spurious entry into LVP mode. For USART communication at 115200 baud or higher, use the hardware USART rather than a software bit-bang, and verify the baud-rate error is below 2 percent using the actual Fosc the firmware configures.
Información de cumplimiento
RoHS and lead-free per Microchip PIC16F648A product page. NOT AEC-Q100 qualified - this -E/SS variant is industrial/extended grade; AEC-Q100 qualified PIC16F variants exist under separate part numbers. REACH compliance per Microchip product environmental statements.
