PIC16C622-20/P - 8-Bit 20MHz OTP MCU, 3.5KB, 13 I/O | Microchip
N.º de pieza: PIC16C622-20/P ✗ Fin de vida| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $3.45 | $3,45 |
| 10 | $3.12 | $31,20 |
| 100 | $2.78 | $278,00 |
| 500 | $2.45 | $1.225,00 |
| 1.000 | $2.1 | $2.100,00 |
PIC16C622-20/P Descripción general
What is a PIC microcontroller? A PIC (Peripheral Interface Controller) is a Harvard-architecture 8-bit RISC microcontroller from Microchip Technology, organized as: microcontroller -> MCU -> embedded controller -> semiconductor IC. PIC MCUs dominate cost-sensitive embedded designs thanks to deterministic instruction execution, a compact instruction set (35 instructions for mid-range parts like the PIC16C622), and a decades-long ecosystem of compilers, programmers (MPLAB PM3), and in-circuit debuggers.
Key features include 20MHz maximum clock (4MHz typical RC operation), 2.7V-6.0V wide operating voltage, 15 µA typical current at 5V/4MHz, and only 1 µA at 3V/32 kHz, fully static design supporting low-power sleep modes, brown-out reset and power-on reset, and commercial/industrial/extended temperature grades. The 20MHz speed grade (the "-20" suffix) targets applications that need faster instruction throughput than the 04 variants.
Typical applications include low-cost industrial control, sensor signal conditioning, simple motor drivers, automotive interior modules, and consumer appliance controllers. The 13 I/O and 3.5KB OTP program memory fit legacy designs where deterministic timing and through-hole DIP-18 serviceability are valued over modern surface-mount footprints.
When designing with this device, plan a programming path early: OTP requires a device programmer such as the MPLAB PM3, since in-circuit reprogramming is not supported. Add 0.1 µF decoupling on VDD and keep the MCLR pull-up resistor within 10kΩ to ensure reliable reset.
Alternativas directas para PIC16C622-20/P — 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 PIC16C622-20/P (mismo factor de forma y huella) — difiere en Program Memory Size, Program Memory Type, Timers, Watchdog Timer, Operating Temperature Range.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC16C622-20/SS
✅ Sustitución directa✓ En stock
$1.38 / unidad
Ver hoja de datos →PIC16C622-20E/P
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$2.14 / unidad
Ver hoja de datos →PIC16C622-20I/P
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$1.92 / unidad
Ver hoja de datos →PIC16C622-04/P
✅ Sustitución directa✓ En stock
$1.55 / unidad
Ver hoja de datos →PIC16C621-20/P
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$1.55 / unidad
Ver hoja de datos →PIC16C620-20/P
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$3.2 / unidad
Ver hoja de datos →PIC16C622-20/P Valores máximos y características eléctricas
| Core Architecture | 8-bit PIC RISC (Harvard) |
| Family | PIC16C6xx mid-range |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 3.5 KB (2K x 14) |
| RAM | 128 bytes |
| EEPROM Data Memory | None |
| Frecuencia de reloj máxima | 20 MHz |
| Operating Voltage Range | 2.7 V to 6.0 V (typical 3.0 V-6.0 V) |
| Supply Current (5 V, 4 MHz) | 15 µA typical |
| Supply Current (3 V, 32 kHz) | 1 µA typical |
| I/O Pins | 13 |
| Timers | 1 x 8-bit (TMR0) + WDT |
| Interrupt Sources | Multiple internal/external |
| Encapsulado | 18-pin PDIP (P) |
| Tipo de montaje | Through-Hole |
| Temperature Grades | Commercial, Industrial, Extended |
| Speed Grade Suffix | -20 (20 MHz) |
Configuración de pines de PIC16C622-20/P
| Pin 1 | RA2 — Digital I/O / comparator reference |
| Pin 2 | RA3 — Digital I/O / comparator output |
| Pin 3 | RA4/T0CKI — Digital I/O / Timer0 clock input |
| Pin 4 | MCLR — Master clear reset (active low) |
| Pin 5 | VSS — Ground reference |
| Pin 6 | RB0/INT — Digital I/O / external interrupt |
| Pin 7 | RB1 — Digital I/O |
| Pin 8 | RB2 — Digital I/O |
| Pin 9 | RB3 — Digital I/O |
| Pin 10 | RB4 — Digital I/O |
| Pin 11 | RB5 — Digital I/O |
| Pin 12 | RB6 — Digital I/O / programming clock |
| Pin 13 | RB7 — Digital I/O / programming data |
| Pin 14 | VDD — Positive supply voltage |
| Pin 15 | OSC2/CLKOUT — Oscillator output / clock out |
| Pin 16 | OSC1/CLKIN — Oscillator input / external clock |
| Pin 17 | RA0/AN0 — Digital I/O / analog comparator input 0 |
| Pin 18 | RA1/AN1 — Digital I/O / analog comparator input 1 |
Aplicaciones típicas
PIC16C622-20/P es adecuado para 6 aplicacións: Industrial Sensor Interface, Automotive Interior Module, Consumer Appliance Controller, HVAC Zone Controller, Educational Development Board, Legacy Industrial Replacement Board.
Industrial Sensor Interface
The PIC16C622-20/P fits industrial sensor interface boards that need a rugged through-hole MCU with deterministic timing. Its 13 I/O pins can directly read switches and 4-20 mA loop sensors, while the on-chip analog comparator handles threshold detection on the analog inputs without an external op-amp. At 15 µA typical current at 5V/4MHz, the part stays cool inside sealed enclosures, and the 18-pin PDIP -20/P package survives field replacement. Compared with a modern flash MCU, the OTP architecture forces a fully validated firmware build before programming, eliminating accidental firmware corruption in factory-floor environments.
Recomendado
Automotive Interior Module
The PIC16C622-20/P serves automotive interior modules such as seat controllers, mirror adjusters, and lighting drivers where the extended temperature grade is required. Its 20MHz instruction throughput executes multiple PWM channels and debounced switch scans in real time without software overhead, and the 18-pin PDIP simplifies bench programming and rework during service. The on-chip watchdog timer and brown-out reset satisfy automotive functional-safety checklists at the component level. Use the PIC16C622-20E/P variant explicitly when the ambient temperature rises above 85C; the -20/P base part only covers commercial/industrial ranges.
Recomendado
Consumer Appliance Controller
The PIC16C622-20/P is widely used as the main controller in low-cost consumer appliances such as coffee makers, microwave ovens, and washing-machine control panels. The 3.5KB OTP program memory holds compact control loops, the 13 I/O drive LED indicators and triac interfaces directly, and the 1 µA sleep current extends battery-backed clock and timer functions between mains cycles. Compared with a switching regulator-based design, the 18-pin PDIP -20/P remains hand-solderable for repair shops and small-batch manufacturers. Designers should still add MOV protection across the mains side and a watchdog-driven reset to survive brown-outs.
Recomendado
HVAC Zone Controller
The PIC16C622-20/P drives HVAC zone controller boards managing dampers, fans, and thermistor inputs in zoned climate systems. Its analog comparator directly digitizes NTC thermistor voltage dividers without an external ADC, freeing the 13 I/O for relay drivers and communication lines. The 20MHz speed grade handles PID loop calculations and user-interface keypads in the same scan cycle. The 18-pin PDIP -20/P package is preferred for prototype zoning panels where technicians hand-swap MCUs during commissioning. Add a hardware watchdog timer in firmware to recover from EMI-induced lockups.
Recomendado
Educational Development Board
The PIC16C622-20/P is a classic teaching platform for university embedded systems courses thanks to its through-hole 18-pin PDIP footprint, accessible instruction set (35 opcodes), and abundant legacy labs. Students can hand-solder the MCU, write assembly or C in MPLAB X, and program it using a PICkit or MPLAB PM3. The -20 speed grade provides enough throughput for real-time labs on timers, interrupts, and the analog comparator. Compared with modern surface-mount parts, the PIC16C622-20/P remains pedagogically valuable because all pins are accessible on a 0.1-inch pitch header.
Recomendado
Legacy Industrial Replacement Board
The PIC16C622-20/P is often specified as the exact replacement for factory equipment that was built in the 1990s-2000s, where original tooling still programs OTP devices. The 18-pin PDIP -20/P package is pin-compatible with the original PIC16C622 variants, and Microchip continues to manufacture limited production runs for industrial sustaining programs. The -20 speed grade preserves the original timing budget of legacy firmware without re-qualification. For new designs, migrate to PIC16F628A-I/P; for sustaining legacy equipment, the PIC16C622-20/P remains a cost-effective verified substitute.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC16C622-20/P — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC16C622-20/SS | PIC16C622-20E/P | PIC16C622-20I/P | PIC16C622-04/P | PIC16C621-20/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | PDIP-18 | SSOP-18 - same pinout | PDIP-18 - same | PDIP-18 - same | PDIP-18 - same | PDIP-18 - same |
| Program Memory | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP |
| Max Clock Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 4 MHz | 20 MHz |
| Analog Comparator | Yes | Yes | Yes | Yes | Yes | No (omitted) |
| RAM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| Temperature Grade | Commercial (0C to +70C) | Commercial | Extended (-40C to +125C) | Industrial (-40C to +85C) | Commercial | Commercial |
| Operating Voltage | 2.7 V to 6.0 V | 2.7 V to 6.0 V | 2.7 V to 6.0 V | 2.7 V to 6.0 V | 2.7 V to 6.0 V | 2.7 V to 6.0 V |
| Memory Type | OTP (one-time-programmable) | OTP | OTP | OTP | OTP | OTP |
Diferenciadores clave
- 20 MHz speed grade with 3.5KB OTP code space (frente a PIC16C622-04/P)
- Includes on-chip analog comparator (frente a PIC16C621-20/P)
- Through-hole PDIP-18 serviceability (frente a PIC16C622-20/SS)
Notas de diseño
Place a 0.1 µF decoupling capacitor as close as possible to the VDD pin (pin 14) and a bulk 10 µF tantalum or electrolytic capacitor on the same node. The PIC16C622-20/P draws up to 15 µA at 5V/4MHz typical, but transient spikes during oscillator startup or I/O switching can exceed 50 mA. Add a 10 kΩ pull-up resistor on MCLR (pin 4) to ensure a clean reset ramp; values above 40 kΩ may allow noise-induced resets in industrial environments.
Keep the oscillator traces between OSC1 (pin 16) and OSC2 (pin 15) short and symmetric. For a 20 MHz crystal, route traces under 5 mm and surround them with a ground ring to suppress EMI coupling into nearby analog comparator inputs. If using an external clock source, drive OSC1 with a CMOS-level square wave and leave OSC2 floating. Add a 1 MΩ resistor across the crystal to bias the internal inverter into its linear region for low-power operation.
Do not assume OTP memory can be erased or rewritten - the PIC16C622-20/P is one-time-programmable. Always verify firmware with a windowed PIC16C622 (PIC16C622-20/JW) before committing production code. Configure CONFIG word fuses during programming to enable watchdog timer, brown-out reset, and power-on timer; default unprogrammed CONFIG can leave the MCU vulnerable to code runaway. When migrating to the PIC16F628A-I/P for new designs, re-map RAM bank layout (PIC16F628A has 224 bytes RAM vs 128 bytes on PIC16C622).
Información de cumplimiento
RoHS, REACH, lead-free, and halogen-free status were not explicitly stated in the verified web data; consult Microchip product page or sales for definitive compliance documentation. NRND (Not Recommended for New Designs) lifecycle status applies to the standard -20/P grade; -20E/P extended-temperature grade may have different lifecycle status.