PIC16LC622AT-04E/SS - 8-Bit 4MHz OTP MCU 3.5KB | Microchip
N.º da peça: PIC16LC622AT-04E/SS ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $3.45 | $3,45 |
| 10 | $3.1 | $31,00 |
| 100 | $2.65 | $265,00 |
| 500 | $2.2 | $1.100,00 |
| 1.000 | $1.85 | $1.850,00 |
PIC16LC622AT-04E/SS Visão geral
An 8-bit microcontroller (MCU) is a programmable single-chip computer that combines a CPU, program memory, data memory, and peripherals on a single silicon die. Within the broader taxonomy, 8-bit MCUs sit below 16-bit and 32-bit microcontrollers in compute capacity but offer deterministic instruction timing, ultra-low cost, and minimal power consumption, making them ideal for cost-sensitive embedded control. The PIC architecture uses a Harvard design with separate program and data buses, a RISC instruction set, and a two-level hardware stack. The PIC16C family specifically targets OTP and EPROM devices for low-volume production runs and legacy designs.
Key features include 128 bytes of RAM, 12 CMOS bidirectional I/O pins, two 8-bit timers and one 16-bit timer/counter, a watchdog timer with its own on-chip RC oscillator, power-on reset, brown-out reset, and an internal RC oscillator for reliable startup. The 4 MHz instruction rate delivers 1 MIPS performance, sufficient for slow-loop control, simple sensor interfaces, and user-interface logic. The SSOP-20 footprint (0.209 inch / 5.30 mm body width) is a standard 0.65 mm pitch package compatible with hand-soldering and reflow processes.
The PIC16LC622A's architecture is built on Microchip's low-power CMOS process, enabling the LC suffix that distinguishes it from standard PIC16C622A parts. Its RISC core executes 35 single-word instructions in a single instruction cycle (4 clock periods), and the device supports direct, indirect, and relative addressing modes. The integrated watchdog timer with dedicated clock source provides failsafe operation independent of the main oscillator.
Typical applications include industrial automation control, consumer electronics user interfaces, low-cost sensor signal conditioning, medical device sub-systems, and automotive body electronics. The wide operating temperature range makes it suitable for under-hood and outdoor installations. Because the part is OTP, it is most cost-effective for low-volume production or legacy migration designs.
When designing with this device, ensure the OTP programming step is accounted for in the manufacturing flow, and verify brown-out reset thresholds match the supply voltage profile. The two-level hardware stack constrains nested subroutine depth, so architects must plan call chains carefully.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Alternativas drop-in para PIC16LC622AT-04E/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 PIC16LC622AT-04E/SS (mesmo formato e footprint) — diferindo em Package, Program Memory Size, Core Architecture, Hardware Stack, Operating Temperature Range.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC16LC622A-04E/SS
✅ Drop-In✓ Em estoque
$2.42 / unidade
Ver ficha técnica →PIC16LC622A-04I/SS
✅ Drop-In✓ Em estoque
$1.56 / unidade
Ver ficha técnica →PIC16LC621AT-04E/SS
✅ Drop-In✓ Em estoque
$2.19 / unidade
Ver ficha técnica →PIC16LC620AT-04E/SS
✅ Drop-In✓ Em estoque
$2.45 / unidade
Ver ficha técnica →PIC16LC622AT-04E/SS Classificações máximas e características elétricas
| Core Processor | PIC |
| Core Size | 8-Bit |
| Maximum Clock Speed | 4 MHz |
| Program Memory Size | 3.5 KB (2K x 14) OTP |
| ROM Type | OTP |
| RAM Size | 128 bytes |
| Number of I/O Pins | 12 |
| Supply Voltage Range | 2.5 V to 5.5 V (operating); 2.5 V to 6.25 V (absolute max) |
| Faixa de temperatura de operação | -40 C to +125 C (automotive, E temp grade) |
| Encapsulamento | 20-pin SSOP (5.30 mm body) |
| Tipo de montagem | Surface Mount |
| Instruction Set | PIC 16C, 35 single-cycle instructions |
| Hardware Stack | 2-level |
| Timers/Counters | 2 x 8-bit, 1 x 16-bit |
| Watchdog Timer | Yes, with dedicated on-chip RC oscillator |
| Brown-out Reset | Yes |
| Power-on Reset | Yes |
Configuração de pinos do PIC16LC622AT-04E/SS
| Pino 1 | RA2 — Bidirectional I/O port A bit 2 |
| Pino 2 | RA3 — Bidirectional I/O port A bit 3 |
| Pino 3 | RA4/T0CKI — Port A bit 4 / Timer0 clock input |
| Pino 4 | MCLR/VPP — Master clear reset (active low) / programming voltage input |
| Pino 5 | VSS — Ground reference |
| Pino 6 | RB0/INT — Port B bit 0 / external interrupt input |
| Pino 7 | RB1 — Bidirectional I/O port B bit 1 |
| Pino 8 | RB2 — Bidirectional I/O port B bit 2 |
| Pino 9 | RB3 — Bidirectional I/O port B bit 3 |
| Pino 10 | RB4 — Bidirectional I/O port B bit 4 |
| Pino 11 | RB5 — Bidirectional I/O port B bit 5 |
| Pino 12 | RB6 — Bidirectional I/O port B bit 6 |
| Pino 13 | RB7 — Bidirectional I/O port B bit 7 |
| Pino 14 | VDD — Positive supply voltage |
| Pino 15 | OSC2/CLKOUT — Oscillator output / clock out (crystal mode) |
| Pino 16 | OSC1/CLKIN — Oscillator input / clock in |
| Pino 17 | RA0 — Bidirectional I/O port A bit 0 |
| Pino 18 | RA1 — Bidirectional I/O port A bit 1 |
| Pino 19 | RA5 — Bidirectional I/O port A bit 5 |
| Pino 20 | VSS — Ground reference |
Aplicações típicas
PIC16LC622AT-04E/SS é adequado para 7 aplicaçãos: Industrial Automation Control, Consumer Electronics User Interfaces, Medical Device Sub-Systems, Automotive Body Electronics, Low-Cost Sensor Signal Conditioning, Battery-Backed Remote Control Systems, Smart Home Sensor Nodes.
Industrial Automation Control
The PIC16LC622AT-04E/SS fits industrial automation applications because its -40C to +125C automotive temperature grade tolerates factory-floor thermal stress and its 2.5V to 5.5V supply range accommodates 3.3V or 5V backplane rails. With 3.5KB OTP memory and 4 MHz throughput it can run PID control loops, scan a 4x4 keypad matrix, drive character LCDs via software SPI, and handle relay or triac switching through its 12 I/O pins. The hardware watchdog with dedicated RC oscillator prevents lockup in unattended installations. Industrial designers benefit from the SSOP-20 footprint that fits compact DIN-rail enclosures. PIC16F628A-I/SS is recommended as the Flash-based alternative for in-field firmware updates.
Recomendado
Consumer Electronics User Interfaces
The PIC16LC622AT-04E/SS is well matched for consumer electronics user-interface controllers because its 3.5KB OTP holds 2K instructions of button-debounce, menu-navigation, and LED-driving code, while 128 bytes RAM comfortably tracks button state and LCD buffers. The 4 MHz clock provides deterministic response under 100 ms for keypad scanning. Its 2.5V to 5.5V supply range enables direct connection to single-cell Li-ion or 3-AA battery stacks, and the LC low-power process minimizes quiescent draw for battery-backed remote controls and appliance keypads. Designers should plan for OTP programming cost amortization; for production volumes a PIC16F family Flash part may be more economical.
Recomendado
Medical Device Sub-Systems
The PIC16LC622AT-04E/SS can serve in medical device sub-systems such as battery-powered patient monitors, dosing pumps, or handheld diagnostic aids where its low-power CMOS LC process maximizes battery runtime. Its 4 MHz core delivers deterministic interrupt response needed for sensor sampling, and 12 I/O pins suffice to interface with SPI ADC chips, I2C EEPROM, and piezo-buzzer drivers. The automotive -40C to +125C grade survives sterilization autoclaves and refrigeration. For FDA-class-II and higher devices, firmware locked into OTP requires validated revision control. Designers should also ensure compliance with IEC 60601 EMC immunity by adding decoupling and shielded cabling.
Recomendado
Automotive Body Electronics
The PIC16LC622AT-04E/SS is targeted at automotive body-electronics modules including seat controllers, mirror adjusters, window switches, and interior lighting drivers where its -40C to +125C automotive grade meets under-dash thermal requirements. The 12 I/O pins can drive H-bridges, read switch-matrix signals, and implement LIN-slave-style UART comms at low cost. Brown-out reset and watchdog with dedicated RC oscillator protect against automotive supply transients and load-dump events. AEC-Q100 qualification is not implied for this PIC16C OTP part, so design teams should verify OEM-specific automotive PPAP requirements before deployment.
Recomendado
Low-Cost Sensor Signal Conditioning
The PIC16LC622AT-04E/SS can host low-cost sensor signal conditioning firmware for thermistor bridges, optical encoders, simple strain gauges, and 4-20 mA loop translators where its 8-bit PIC architecture and 4 MHz clock deliver ample throughput for linearization and averaging. With 128 bytes RAM and two 8-bit timers it can run software-PWM control loops at kHz bandwidth. The OTP memory locks firmware at production, eliminating reprogramming risk in deployed sensor modules. For high-accuracy 16-bit or 24-bit sensor chains an external ADC such as Microchip MCP3421 is recommended.
Recomendado
Battery-Backed Remote Control Systems
The PIC16LC622AT-04E/SS is appropriate for battery-backed remote control and key-fob style transmitters where its LC low-power CMOS process extends coin-cell life well beyond the 100 mAh capacity threshold. It operates down to 2.5V, matching the discharge curve of a single CR2032, and can sleep between user inputs using its watchdog or external interrupts. The 4 MHz burst clock handles button-debounce, rolling-code encryption, and RF packet generation. For new designs that need firmware updates, the PIC16LF1824-I/SL is recommended; otherwise the OTP PIC16LC622AT-04E/SS offers the lowest BOM cost.
Recomendado
Smart Home Sensor Nodes
The PIC16LC622AT-04E/SS fits smart-home sensor nodes that transmit temperature, occupancy, or contact-closure status to a central hub. Its 12 I/O pins accept switch inputs, drive indicator LEDs, and bit-bang UART or one-wire protocols for cheap RF or wired backhaul. The 2.5V to 5.5V supply range aligns with single-cell Li-ion or two-AA battery stacks, and the low quiescent current supports multi-year battery life. The OTP memory prevents firmware tampering in fielded units. For mass-produced consumer IoT designs the Flash-based PIC16F18324-I/SL provides comparable pin count with significantly higher on-board peripherals.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC16LC622AT-04E/SS — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC16LC622A-04E/SS | PIC16LC622A-04I/SS | PIC16LC621AT-04E/SS | PIC16LC620AT-04E/SS |
|---|---|---|---|---|---|
| Package | 20-pin SSOP (5.30 mm) | 20-pin SSOP - same | 20-pin SSOP - same | 20-pin SSOP - same | 20-pin SSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 3.5 KB (2K x 14) OTP | 3.5 KB OTP - same | 3.5 KB OTP - same | 1.75 KB OTP (-50%) | 0.875 KB OTP (-75%) |
| Maximum Clock Speed | 4 MHz | 4 MHz - same | 4 MHz - same | 4 MHz - same | 4 MHz - same |
| Number of I/O Pins | 12 | 12 - same | 12 - same | 12 - same | 12 - same |
| Operating Temperature Range | -40C to +125C (automotive 'E') | -40C to +125C - same | -40C to +85C (industrial 'I') | -40C to +125C - same | -40C to +125C - same |
| ROM Type | OTP | OTP - same | OTP - same | OTP - same | OTP - same |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
Principais diferenciais
- Low-power CMOS LC process variant (vs PIC16C622A-04I/SS (standard CMOS))
- Extended -40C to +125C temperature grade (vs PIC16LC622A-04I/SS (-40C to +85C))
- Full 3.5KB OTP program memory (vs PIC16LC621AT-04E/SS (1.75KB))
Notas de projeto
Estimated: at 4 MHz clock and 5V supply, PIC16LC622A core draws approximately 2 mA active and 5 uA sleep. Place a 100 nF decoupling capacitor within 5 mm of the VDD pin and add a bulk 10 uF tantalum or ceramic cap on the supply rail. If the design uses a switching regulator upstream, add a ferrite bead and 10 uF + 100 nF pi-filter to suppress switching noise that can corrupt the internal RC oscillator.
Route the OSC1/OSC2 traces short and symmetric with a ground guard ring for crystal-mode operation. Keep the MCLR/VPP trace away from high-current switching nodes to avoid inadvertent resets during load transients. The SSOP-20 has a 0.65 mm pitch that is hand-solderable but should use reflow for production; do not exceed 260 C peak reflow temperature. Estimated: 1 oz copper pour under the exposed die-pad (or dummy on none) reduces junction-to-ambient thermal resistance to approximately 100 C/W.
OTP memory cannot be erased or reprogrammed - any firmware bug locked into the device requires a physical part replacement. Plan for thorough code simulation in MPLAB X IDE and at least two prototype PCB spins before committing to OTP programming. The PIC16C62X two-level hardware stack also limits nested subroutine depth; restructure code to avoid deep call chains. Brown-out reset voltage must be selected via configuration bits before programming and cannot be changed afterward.
Informações de conformidade
Compliance certifications not stated in the verified web data. PIC16C-family OTP parts are not AEC-Q100 qualified by Microchip. RoHS, REACH, lead-free, halogen-free status marked 'unknown' pending direct manufacturer confirmation.
