PIC16C622A-20/SO - 8-Bit 20MHz OTP MCU 3.5KB | Microchip
Référence : PIC16C622A-20/SO ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $4.18 | $4,18 |
| 10 | $3.76 | $37,60 |
| 100 | $3.2 | $320,00 |
| 500 | $2.8 | $1 400,00 |
| 1 000 | $2.45 | $2 450,00 |
PIC16C622A-20/SO Présentation
What is a PIC16C62X microcontroller? It is a member of Microchip's mid-range PIC family built on a RISC (Reduced Instruction Set Computer) Harvard architecture that uses separate program and data buses. The PIC16C62X series pairs a 14-bit wide instruction word with an 8-bit data path, providing higher code density than the entry-level 12-bit PIC cores while keeping the instruction set small (only 35 single-word instructions to learn). Positioned in the hierarchy as microcontroller -> embedded MCU -> 8-bit MCU -> PIC micro -> semiconductor, the PIC16C62X family is widely used in appliance controls, security panels, automotive body electronics, IR remote controls, and low-cost consumer products.
Key features of the PIC16C622A include two on-chip analog comparators (the defining trait that distinguishes the 'C62X family from generic PIC16C55x/56x/57x parts), a watchdog timer with on-chip RC oscillator, power-on reset, brown-out reset, an internal 4MHz RC oscillator option to reduce external component count, and a programmable code-protection scheme. The OTP EPROM is written with an external device programmer such as the Microchip MPLAB PM3, and the part supports in-circuit serial programming (ICSP) on most I/O pins via dedicated programming lines.
Typical applications include security alarm panels, appliance controllers, sensor signal conditioning, IR remote receivers, automotive interior lighting and accessory modules (non-safety), and small motor-driver interfaces. The integrated comparators allow direct analog-sensor interface (light, temperature, current) without a separate op-amp, lowering BOM cost in volume production.
When designing with the PIC16C622A-20/SO, note that the OTP variant cannot be reprogrammed in-circuit; for development, use the JW windowed or QFP UV-erasable package. Place a 0.1uF decoupling capacitor as close to the VDD/VSS pins as possible and follow Microchip's recommended PCB layout for the chosen oscillator to avoid start-up problems and erratic resets.
This page synthesizes distributor pricing (as of 2026-10-09), Microchip same-family drop-in alternatives, and practical design notes not assembled in the manufacturer datasheet alone.
Alternatives de remplacement direct pour PIC16C622A-20/SO — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC16C622A-20/SO (même facteur de forme et même empreinte) — différant par Package, Program Memory Type, Analog Comparators, Operating Temperature, Timers.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC16C622A-20E/SO
✅ Remplacement direct✓ En stock
$2.5 / unité
Voir la fiche technique →PIC16C622A-04/SO
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC16C622A-20I/SO
✅ Remplacement direct✓ En stock
$2.89 / unité
Voir la fiche technique →PIC16C622A-20/SP
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC16C623-20/SO
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC16C622A-20/SO Valeurs maximales et caractéristiques électriques
| Core Architecture | PIC16 (Mid-Range, 14-bit instruction, 8-bit data) |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 3.5 KB (2K x 14) |
| RAM Size | 128 bytes |
| Fréquence d'horloge maximale | 20 MHz |
| Instruction Cycle Time | 200 ns |
| Largeur du bus de données | 8-bit |
| Supply Voltage Range | 2.5 V to 5.5 V |
| Plage de température de fonctionnement | 0 C to +70 C (Commercial) |
| Digital I/O Pins | 13 |
| Analog Comparators | 2 (on-chip) |
| Timers | Timer0, Watchdog Timer (WDT) |
| Reset Sources | Power-On Reset (POR), Brown-Out Reset (BOR) |
| Internal Oscillator | 4 MHz RC (selectable) |
| Instruction Set Size | 35 single-word instructions |
| I/O Current Sink/Source | 25 mA |
| Boîtier | 18-SOIC (300 mil, wide-body) |
| Type de montage | Surface Mount |
| AEC-Q100 Qualification | Not qualified (commercial grade; for automotive use, choose PIC16F or PIC18 equivalent) |
Configuration des broches de PIC16C622A-20/SO
| Broche 1 | RA2 — Bidirectional I/O port A, bit 2; analog comparator 1 output |
| Broche 2 | RA3 — Bidirectional I/O port A, bit 3 |
| Broche 3 | RA4 — Bidirectional I/O port A, bit 4; Timer0 clock input; also open-drain output |
| Broche 4 | MCLR/VPP — Reset input (active low) / programming voltage input |
| Broche 5 | VSS — Ground reference |
| Broche 6 | OSC1/RA5 — Oscillator crystal input or external clock input; also port A bit 5 |
| Broche 7 | OSC2/RA6 — Oscillator crystal output or clock out; also port A bit 6 |
| Broche 8 | RB0 — Bidirectional I/O port B, bit 0; external interrupt capable |
| Broche 9 | RB1 — Bidirectional I/O port B, bit 1 |
| Broche 10 | RB2 — Bidirectional I/O port B, bit 2 |
| Broche 11 | RB3 — Bidirectional I/O port B, bit 3 |
| Broche 12 | RB4 — Bidirectional I/O port B, bit 4 |
| Broche 13 | RB5 — Bidirectional I/O port B, bit 5 |
| Broche 14 | RB6 — Bidirectional I/O port B, bit 6; ICSP clock |
| Broche 15 | RB7 — Bidirectional I/O port B, bit 7; ICSP data |
| Broche 16 | VDD — Positive supply voltage (2.5V to 5.5V) |
| Broche 17 | RA7 — Bidirectional I/O port A, bit 7 |
| Broche 18 | RA0 — Bidirectional I/O port A, bit 0 |
Applications typiques
PIC16C622A-20/SO convient pour 7 applications: Security Alarm Panels, Appliance Control Boards, IR Remote Control Receivers, Automotive Interior Lighting Modules, Small Motor Drivers and Fan Controllers, Sensor Signal Conditioning Front-Ends, Consumer Electronics Keypad Controllers.
Security Alarm Panels
Why the PIC16C622A-20/SO fits: the two on-chip analog comparators let the firmware detect analog sensor thresholds (PIR motion, smoke, tamper switches) without external op-amps, and 128 bytes of RAM accommodates multi-zone alarm state machines. How it is used and performance: the MCU scans the loop of analog zones every few milliseconds, triggers sirens or relays, and logs events; the 20 MHz clock ensures sub-millisecond response time. Trade-offs: OTP memory means the alarm-panel manufacturer must commit firmware at programming time - the same firmware is then replicated across thousands of boards without per-device customization overhead.
Recommandé
Appliance Control Boards
Why the PIC16C622A-20/SO fits: the 13 digital I/O pins are ample for relay coils, valve drivers, keypads, and segment LCD interfaces on dishwasher, washing-machine, or microwave control boards, while 3.5KB of OTP EPROM fits state-machine firmware plus diagnostic routines. How it is used and performance: the MCU drives triac-trigger optocouplers or low-side relay FETs, reads NTC thermistors via the internal comparators, and runs PWM for motor speed control - all under a 20 MHz instruction budget of 200 ns per cycle. Trade-offs: OTP memory locks the firmware, so post-release field updates require a service visit and a windowed package replacement.
Recommandé
IR Remote Control Receivers
Why the PIC16C622A-20/SO fits: the 20 MHz instruction rate decodes common RC5/RC6/Manchester-encoded IR protocols in real time without sample-rate jitter, and the two comparators serve as hardware IR-input threshold detectors (with external RC integrator). How it is used and performance: the MCU samples a comparator-connected photodiode at 100 kHz+, decodes the protocol, drives UART or relay outputs, and executes command logic from 3.5KB of program memory. Trade-offs: the OTP memory prohibits firmware-level protocol updates; choose flash-based PIC16F628A for protocol-updatable designs.
Recommandé
Automotive Interior Lighting Modules
Why the PIC16C622A-20/SO fits: 13 digital I/O handles multiple incandescent or LED lighting outputs, button inputs, and LIN or CAN transceiver handshakes on body-electronics modules. How it is used and performance: the MCU runs at 20 MHz for fast button-debounce and lighting ramp/PWM curves, with brown-out and power-on reset ensuring clean cold-start. Trade-offs: this part is NOT AEC-Q100 qualified; for production automotive under-hood or safety-critical circuits use PIC18F or dsPIC33 AEC-Q100 grades, but for low-risk interior accessory modules this commercial part is acceptable per automotive module procurement guidance.
Recommandé
Small Motor Drivers and Fan Controllers
Why the PIC16C622A-20/SO fits: 25 mA I/O pin drive current can directly bias small logic-level MOSFETs in low-side fan or DC motor H-bridge configurations, and the comparators interface Hall-effect sensors for commutation without external op-amps. How it is used and performance: the MCU generates PWM at 20 MHz clock resolution, reads back-EMF via a comparator, and implements closed-loop speed control with 128 bytes of RAM for state variables. Trade-offs: limited 128-byte RAM and 3.5KB flash constrain advanced FOC algorithms; for sensorless FOC use a dsPIC33 part instead.
Recommandé
Sensor Signal Conditioning Front-Ends
Why the PIC16C622A-20/SO fits: the two on-chip analog comparators with programmable reference can threshold-detect thermocouple, photodiode, or strain-gauge outputs directly, producing logic-level inputs the MCU can count or log, and 3.5KB of program memory holds calibration tables and linearization lookups. How it is used and performance: the firmware reads comparator outputs in a 1 ms loop, drives indicator LEDs, and transmits via UART/HW-USART, all on a 20 MHz clock for sub-ms latency. Trade-offs: no on-chip ADC; for proportional sensor readings use PIC16F88 or PIC18F25 with built-in ADC.
Recommandé
Consumer Electronics Keypad Controllers
Why the PIC16C622A-20/SO fits: 13 digital I/O are sufficient to scan 4x4 or 5x3 matrix keypads while also driving 7-segment LED displays or character LCDs, with the brown-out reset preventing ghost presses during battery voltage dips. How it is used and performance: the MCU scans the keypad matrix at >100 Hz with software debounce, detects simultaneous key combinations, and drives the display bus - all within a 200 ns instruction budget on a 20 MHz clock. Trade-offs: OTP memory means retail SKUs must carry different firmware per matrix size; the same hardware can be re-spun with different MPN suffixes instead.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC16C622A-20/SO — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC16C622A-20E/SO | PIC16C622A-04/SO | PIC16C622A-20I/SO | PIC16C622A-20/SP | PIC16C623-20/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-SOIC (300 mil) | 18-SOIC (300 mil) - same | 18-SOIC (300 mil) - same | 18-SOIC (300 mil) - same | SPDIP-18 (300 mil) - through-hole, same pinout | 18-SOIC (300 mil) - same |
| Program Memory Size | 3.5 KB (2K x 14) OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 4 KB OTP (+14%) |
| Maximum Clock Frequency | 20 MHz | 20 MHz | 4 MHz (-80%) | 20 MHz | 20 MHz | 20 MHz |
| RAM Size | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| Operating Temperature Range | 0 C to +70 C (Commercial) | -40 C to +85 C (Extended) | 0 C to +70 C (Commercial) | -40 C to +85 C (Industrial) | 0 C to +70 C (Commercial) | 0 C to +70 C (Commercial) |
| I/O Pins | 13 | 13 | 13 | 13 | 13 | 13 |
| Analog Comparators | 2 | 2 | 2 | 2 | 2 | 2 |
| Supply Voltage Range | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V |
| Unit Price (qty 1) | $4.18 (as of 2026-10-09) | approx. $4.50 (extended-grade premium) | approx. $4.00 | approx. $4.60 (industrial-grade premium) | approx. $4.20 (SPDIP) | approx. $4.40 |
Principaux différenciateurs
- Extended-temperature operation for industrial or outdoor enclosures (vs PIC16C622A-20E/SO)
- Lower-power, lower-EMI operation with reduced clock frequency (vs PIC16C622A-04/SO)
- Industrial temperature grade for -40 C to +85 C factory automation (vs PIC16C622A-20I/SO)
- Increased program memory for more complex firmware (vs PIC16C623-20/SO)
Notes de conception
Estimated: the PIC16C622A-20/SO draws approximately 2 mA at 5V/20 MHz with typical I/O loading. Place a 0.1 uF ceramic decoupling capacitor as close as possible to the VDD pin (pin 16) and a bulk 10 uF capacitor on the same supply rail. The internal brown-out reset requires a minimum VDD rise time for proper cold-start; consult the Microchip PIC16C62X datasheet Section 12 for BOR trip-point thresholds and reset timing.
Estimated: the 18-pin wide-body SOIC (300 mil) package benefits from a ground plane under the MCU and short oscillator trace runs. Place the crystal or ceramic resonator within 0.5 inches of pins 6-7 (OSC1/OSC2) to minimize parasitic capacitance, and surround the crystal traces with a ground guard ring to reduce EMI susceptibility. ICSP clock (pin 14, RB6) and ICSP data (pin 15, RB7) must remain uncommitted on the final layout or be routeable to the ICSP header for production programming.
Common pitfalls: (1) The OTP variant cannot be reprogrammed in-circuit - choose the JW windowed package for prototype development and only migrate to PIC16C622A-20/SO for production volume. (2) Pin 3 (RA4) is open-drain on PORT A - it cannot actively source current, only sink; do not drive a logic-level LED from this pin. (3) Pin 4 (MCLR/VPP) must be pulled up via a 10 kohm resistor to VDD for normal operation - leaving MCLR floating causes erratic resets in noisy environments. (4) Confusing this part with PIC16C622 (no 'A' suffix) - the 'A' revision carries datasheet errata fixes; verify compatibility per the Microchip PIC16C62X datasheet errata sheets.
Estimated: in a 18-SOIC (300 mil) package on a 1 square inch 2-layer PCB copper pour, the thermal resistance theta_JA is approximately 80 C/W for the SOIC-18 wide-body package. At the maximum operating temperature of +70 C, the MCU dissipates around 100 mW at 20 MHz and 5 V, yielding a junction temperature rise of approximately 8 C - well within margins. No heatsink or active cooling is required for normal commercial-temperature operation.
Informations de conformité
Commercial temperature grade (0C to +70C), 18-SOIC wide-body. RoHS, REACH, lead-free, halogen-free, and conflict-minerals status are not explicitly stated in the verified distributor/Microchip product pages reviewed; engineer should confirm with Microchip product compliance documents at procurement time before placing volume orders.
