PIC16C66T-04/SO - 8-Bit 4MHz 14KB OTP MCU 28-SOIC | Microchip
N.º da peça: PIC16C66T-04/SO ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $8.2 | $8,20 |
| 10 | $7.45 | $74,50 |
| 100 | $6.8 | $680,00 |
| 500 | $6.1 | $3.050,00 |
| 1.000 | $5.5 | $5.500,00 |
PIC16C66T-04/SO Visão geral
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, data RAM, and programmable peripherals. The PIC16C66 belongs to the mid-range PIC architecture, which sits between the PIC16C5x baseline family and the enhanced PIC17C family. Within the broader taxonomy: 8-bit MCU -> RISC microcontroller -> embedded controller -> semiconductor. The PIC16C66 is the higher-memory successor of the PIC16C65 and offers enhanced peripherals while retaining code compatibility with the PIC16C6x family.
Key features of the PIC16C66T-04/SO include 33 digital I/O lines organized across multiple ports, three 8-bit timer/counters with optional prescalers, a 5-channel 8-bit analog-to-digital converter (ADC), a synchronous serial port (SSP) supporting SPI and I²C, a USART for asynchronous or synchronous communications, a watchdog timer with its own on-chip RC oscillator, and a power-on reset / brown-out reset circuit. It operates from a single 4.5 V to 5.5 V supply and supports in-circuit serial programming (ICSP) for the OTP version.
Typical applications include industrial control, motor control, sensor interfacing, automotive body electronics, instrumentation, smart-card readers, and consumer white goods. The 4 MIPS throughput, abundant I/O, and integrated ADC/USART make it ideal for replacing discrete logic in cost-optimized embedded designs.
When designing with this part, allocate the OTP window carefully - once programmed, OTP memory cannot be erased, so dev-cycle iterations should use a windowed (JW) or EPROM variant for prototypes. The 28-SOIC wide-body package simplifies hand-soldering and breadboard prototyping but consumes more board area than SSOP equivalents.
This page synthesizes distributor pricing, drop-in package-compatible alternatives, and practical design notes not found in the standalone Microchip datasheet - giving engineers a single reference for sourcing, replacement, and design decisions.
Alternativas drop-in para PIC16C66T-04/SO — 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 PIC16C66T-04/SO (mesmo formato e footprint) — diferindo em Timers, Program Memory Size, Program Memory Type, Package, ADC.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC16C66-04/SO
✅ Drop-In✓ Em estoque
$2.65 / unidade
Ver ficha técnica →PIC16C66T-20/SO
✅ Drop-In✓ Em estoque
$8.2 / unidade
Ver ficha técnica →PIC16C66-20/SO
✅ Drop-In✓ Em estoque
$5.45 / unidade
Ver ficha técnica →PIC16C66-20I/SO
✅ Drop-In✓ Em estoque
$6.42 / unidade
Ver ficha técnica →PIC16C66-04I/SO
✅ Drop-In✓ Em estoque
$5.1 / unidade
Ver ficha técnica →PIC16C65BT-04I/PT
✅ Drop-In✓ Em estoque
$4.1 / unidade
Ver ficha técnica →PIC16C63T-04/SO
✅ Drop-In✓ Em estoque
$5.27 / unidade
Ver ficha técnica →PIC16C66T-04/SO Classificações máximas e características elétricas
| Core Architecture | PIC 8-bit RISC (Mid-Range) |
| Program Memory Type | OTP (One-Time-Programmable) EPROM |
| Program Memory Size | 14 KB (8K x 14) |
| Data RAM | 368 bytes |
| CPU Speed (max) | 4 MHz (4 MIPS) |
| Instruction Cycle Time | 200 ns (single cycle), 400 ns (branch) |
| Instruction Set | 35 single-cycle instructions |
| Tensão de alimentação | 4.5 V to 5.5 V |
| I/O Pins | 33 |
| Timers | 3 x 8-bit Timer/Counters with prescaler |
| ADC | 8-bit, 5 channels |
| Serial Interfaces | SSP (SPI / I2C), USART |
| Watchdog Timer | Yes (with dedicated on-chip RC oscillator) |
| Brown-out Reset / POR | Yes |
| Encapsulamento | 28-pin SOIC (0.295 in / 7.50 mm wide body) |
| Tipo de montagem | Surface Mount (Gull Wing) |
| Operating Temperature Grade | Commercial |
| Status RoHS | Compliant |
Configuração de pinos do PIC16C66T-04/SO
| Pino 1 | MCLR/Vpp — Master Clear (reset) input / programming voltage |
| Pino 2 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| Pino 3 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| Pino 4 | RA2/AN2 — PORTA bit 2 / analog input 2 |
| Pino 5 | RA3/AN3/VREF — PORTA bit 3 / analog input 3 / ADC reference |
| Pino 6 | RA4/T0CKI — PORTA bit 4 / Timer 0 clock input |
| Pino 7 | RA5/AN4/SS — PORTA bit 5 / analog input 4 / SPI slave select |
| Pino 8 | Vss — Digital ground |
| Pino 9 | OSC1/CLKIN — Oscillator crystal input / external clock |
| Pino 10 | OSC2/CLKOUT — Oscillator crystal output / clock out |
| Pino 11 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer 1 oscillator output / clock input |
| Pino 12 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer 1 oscillator input / CCP2 |
| Pino 13 | RC2/CCP1 — PORTC bit 2 / Capture/Compare/PWM 1 |
| Pino 14 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Pino 15 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Pino 16 | RC5/SDO — PORTC bit 5 / SPI data out |
| Pino 17 | RC6/TX/CK — PORTC bit 6 / USART transmit / clock |
| Pino 18 | RC7/RX/DT — PORTC bit 7 / USART receive / data |
| Pino 19 | Vss — Digital ground |
| Pino 20 | Vdd — Positive digital supply (4.5-5.5 V) |
| Pino 21 | RB0/INT — PORTB bit 0 / external interrupt |
| Pino 22 | RB1 — PORTB bit 1 |
| Pino 23 | RB2 — PORTB bit 2 |
| Pino 24 | RB3 — PORTB bit 3 |
| Pino 25 | RB4 — PORTB bit 4 |
| Pino 26 | RB5 — PORTB bit 5 |
| Pino 27 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Pino 28 | RB7/PGD — PORTB bit 7 / ICSP data |
Aplicações típicas
PIC16C66T-04/SO é adequado para 6 aplicaçãos: Industrial Motor Control, Sensor Interface Modules, Automotive Body Electronics, Consumer White Goods Control, Test and Measurement Instrumentation, Smart Card and Access Control Readers.
Industrial Motor Control
The PIC16C66T-04/SO is well suited to small brushed DC and stepper motor control in industrial equipment. Its 4 MIPS throughput, three 8-bit timers with PWM capability, and 33 I/O pins enable precise commutation timing for unipolar and bipolar stepper drives, while the integrated 5-channel 8-bit ADC reads back current-sense amplifiers and tachometer feedback. At 4.5-5.5 V operation the part interfaces directly to industry-standard gate drivers, and the 28-SOIC wide-body package dissipates enough heat for continuous duty at moderate currents. Unlike discrete logic implementations, the integrated USART simplifies RS-485 networking of multiple motor nodes on a factory floor.
Recomendado
Sensor Interface Modules
For sensor interface and signal-conditioning modules, the PIC16C66T-04/SO offers a 5-channel 8-bit ADC that digitizes analog sensor outputs directly, while its SSP peripheral handles SPI or I2C digital sensors simultaneously. The 368-byte RAM accommodates moving-average filtering and calibration constants without external memory. The integrated USART streams processed data over RS-232/RS-485 to a host controller. Operating from a single 5 V rail, the part simplifies power architecture for distributed sensor hubs in industrial automation, where the 28-SOIC footprint integrates cleanly onto small interface PCBs alongside op-amps and protection circuitry.
Recomendado
Automotive Body Electronics
Within automotive body-control modules, the PIC16C66T-04/SO's 5 V operation and integrated ADC drive functions such as seat-position sensing, mirror control, and lighting dimming. The 33 I/O pins drive relays and read switches directly; the USART links the body controller to a CAN bridge or to other ECUs over LIN. Brown-out reset and watchdog timer with dedicated RC oscillator provide the fail-safe behavior expected in automotive designs. The wide-body 28-SOIC package withstands the thermal cycling and vibration of under-dash mounting while remaining hand-reworkable for low-volume specialty vehicles.
Recomendado
Consumer White Goods Control
The PIC16C66T-04/SO's OTP memory, low cost, and 5 V operation make it a strong fit for fixed-function consumer appliances such as washing machines, dishwashers, microwave ovens, and small air conditioners. Its timers handle motor PWM, the ADC reads temperature and water-level sensors, and the USART interfaces with inverter boards or display panels. OTP memory is advantageous here because once the firmware is locked, the part cannot be re-programmed by unauthorized parties, providing IP protection in high-volume consumer products. The 28-SOIC wide-body package simplifies hand-soldering during prototyping and repair.
Recomendado
Test and Measurement Instrumentation
For low-cost bench instruments such as handheld multimeters, signal generators, and panel meters, the PIC16C66T-04/SO delivers deterministic real-time response from its 4 MIPS core, drives multiplexed LED or LCD displays via its abundant I/O, and reads measurement signals through its 8-bit ADC. The synchronous serial port (SSP) interfaces to external ADC or DAC chips for higher-precision designs, while the USART streams data to a PC over RS-232. Brown-out reset guarantees clean startups on bench supplies, and the OTP architecture prevents accidental firmware corruption in field-deployed instruments.
Recomendado
Smart Card and Access Control Readers
In access-control readers and smart-card interfaces, the PIC16C66T-04/SO provides deterministic timing for ISO 7816 smart-card communication through its USART, plus GPIO for LEDs, buzzers, and relay control. The 5 V I/O matches legacy smart-card supply requirements, eliminating level shifters. The 368-byte RAM accommodates protocol state machines for T=0/T=1 communication, and the 14 KB OTP holds application firmware that can be locked to prevent cloning. The wide-body 28-SOIC package is mechanically robust for door-frame mounted reader housings subject to vibration and temperature swing.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC16C66T-04/SO — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC16C66-04/SO | PIC16C66T-20/SO | PIC16C66-20/SO | PIC16C66-04I/SO | PIC16C63T-04/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC (0.295 in, wide body) | 28-SOIC (0.295 in, wide body) - same | 28-SOIC (0.295 in, wide body) - same | 28-SOIC (0.295 in, wide body) - same | 28-SOIC (0.295 in, wide body) - same | 28-SOIC (0.295 in, wide body) - same |
| CPU Speed (max) | 4 MHz (4 MIPS) | 4 MHz (4 MIPS) | 20 MHz (5 MIPS) | 20 MHz (5 MIPS) | 4 MHz (4 MIPS) | 4 MHz (4 MIPS) |
| Program Memory | 14 KB OTP (8K x 14) | 14 KB OTP (8K x 14) | 14 KB OTP (8K x 14) | 14 KB OTP (8K x 14) | 14 KB OTP (8K x 14) | 7 KB OTP |
| Data RAM | 368 bytes | 368 bytes | 368 bytes | 368 bytes | 368 bytes | 192 bytes |
| I/O Pins | 33 | 33 | 33 | 33 | 33 | 33 |
| ADC | 8-bit, 5 channels | 8-bit, 5 channels | 8-bit, 5 channels | 8-bit, 5 channels | 8-bit, 5 channels | No ADC |
| Operating Temperature | Commercial (0 to +70 C) | Commercial (0 to +70 C) | Commercial (0 to +70 C) | Commercial (0 to +70 C) | Industrial (-40 to +85 C) | Commercial (0 to +70 C) |
Principais diferenciais
- Same-package drop-in upgrade available at higher speed (vs PIC16C66T-04/SO)
- Tube and Tape-and-Reel packaging options (vs PIC16C66-04/SO vs PIC16C66T-04/SO)
- Family-compatible peripheral set across the PIC16C6x lineup (vs PIC16C63T-04/SO (lower-end family member))
Notas de projeto
OTP memory cannot be erased. Once programmed, the PIC16C66T-04/SO is locked permanently; use a windowed (JW) ceramic package or the Flash-based PIC16F66 for prototyping. Ensure all code is fully validated before committing to OTP production units - a single bit error wastes the part. Bulk programming should use a qualified Microchip-approved gang programmer with verification enabled.
Estimated: at 4 MHz and 5 V, the PIC16C66T-04/SO draws roughly 5-13 mA active and <1 uA sleep, depending on peripheral enable state. Place a 0.1 uF ceramic decoupling capacitor as close as possible to the Vdd pin (pin 20), plus a bulk 10 uF tantalum or ceramic on the board supply rail. The AVdd pin (when present in this family) should be filtered separately from Vdd with a small ferrite bead or 10 ohm resistor if the ADC is used.
The 28-SOIC wide-body (0.295 in / 7.50 mm) footprint is the same across the entire PIC16C6x family. To maintain programming and debugging compatibility, keep the ICSP pins (RB6/PGC = pin 27, RB7/PGD = pin 28, MCLR/Vpp = pin 1) accessible either as test pads or a 6-pin header. Place the 4 MHz ceramic resonator within 1 cm of pins 9-10 (OSC1/OSC2) to minimize parasitic capacitance; crystal mode requires 22-33 pF load capacitors to GND.
Informações de conformidade
RoHS compliant per Microchip product page. Not AEC-Q100 qualified; this part is intended for industrial and consumer applications, not automotive safety-critical. For automotive applications contact Microchip for AEC-Q100 grade parts in the PIC16F family.
