PIC16C433T-I/SO - 8-bit PIC MCU 10MHz 3.5KB OTP 18-SOIC | Microchip
MPN: PIC16C433T-I/SO ✗ Cuối đờiPIC16C433T-I/SO Tóm tắt
A PIC16 microcontroller is a Harvard-architecture RISC device: separate program and data buses, a small fixed instruction set, and most instructions executing in a single oscillator cycle. PIC16C-series parts use EPROM/OTP program memory, meaning the device can be programmed once at production time and the code is permanently retained, which suits low-cost, high-volume consumer and appliance designs where flash re-programmability is not required. The C-class PIC16 is positioned below the F-class (Flash) siblings in the same family tree (PIC16 -> PIC mid-range -> 8-bit MCU -> microcontroller).
Key features include 10 MHz maximum operating frequency, 128 bytes of RAM, 5 I/O pins (PIC16C433 exposes a 6-pin I/O set per the family, but in this /SO variant 5 are bonded out), internal oscillator support, 5V typical operation, and an instruction set fully compatible with the broader PIC16 mid-range family. The OTP EPROM die is mature and well-characterized, making the part suitable for legacy industrial controllers and cost-down retrofits of older designs.
PIC16C433 belongs to the PIC16C4x sub-family of mid-range microcontrollers. Architecturally it shares the same core as PIC16C54/55/56/57/58 devices, with extended program memory addressing to reach 2K x 14 of code space. The on-chip peripherals are intentionally minimal - this is a low-I/O-count, low-cost device aimed at simple digital control tasks. Power consumption is typical for the OTP EPROM process node.
Typical applications include simple timer/replacement logic, low-cost consumer appliance controls, toys and educational boards, sensor-signal processing front-ends, motor-control signal generators, and any application where a one-time-programmed 8-bit MCU with a small code footprint is acceptable. The 18-SOIC form factor makes it well-suited for through-hole-style PCBs converted to surface-mount, or for retrofit boards that require the SO-18 footprint.
When designing with this device, note that OTP means field upgrades are impossible - firmware must be finalized before programming. Always provide adequate Vdd decoupling (100 nF + bulk) close to the IC, and respect the oscillator start-up time when MCLR reset is released.
This page synthesizes distributor pricing, drop-in alternative pinouts, and practical design notes not present in the standalone manufacturer datasheet, including cross-references to the /SO and /P variants.
Bộ thay thế dễ dàng lắp đặt cho PIC16C433T-I/SO — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC16C433T-I/SO (cùng hình factor và footprint) — khác nhau ở Instruction Set.
PIC16C433-I/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C433-04I/SO
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C432T-I/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C434T-I/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F433-I/SO
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C433T-I/SO Tỷ lệ tối đa & tính chất điện
| Core | PIC16C - 8-bit RISC |
| Program Memory Size | 3.5 KB (2K x 14) OTP EPROM |
| RAM Size | 128 bytes |
| Tần số xung maksimum | 10 MHz |
| Operating Voltage (Vdd) | 5 V typical (PIC16C family range) |
| Number of I/O Pins | 5 (SO-18 bonded) |
| Hộp / Vỏ | 18-SOIC (0.295 inch / 7.50 mm width) |
| Kiểu lắp đặt | Surface Mount |
| Oscillator Type | Internal (RC) supported |
| Khoảng nhiệt độ hoạt động | -40C to +85C (Industrial, 'I' suffix) |
| Architecture | Harvard, 14-bit instruction word |
| Instruction Set | PIC16 mid-range (single-cycle) |
| Kiểu bộ nhớ | OTP EPROM (One-Time-Programmable) |
| Series | PIC PIC 16C |
| Packaging | Tape & Reel ('T' suffix) |
Cấu hình chân PIC16C433T-I/SO
| Chân 1 | RA2 — Bidirectional I/O port A bit 2 |
| Chân 2 | RA3 — Bidirectional I/O port A bit 3 |
| Chân 3 | RA4 — Bidirectional I/O port A bit 4 (also T0CKI input) |
| Chân 4 | RA5 — Bidirectional I/O port A bit 5 |
| Chân 5 | Vss — Ground reference |
| Chân 6 | RB0 — Bidirectional I/O port B bit 0 (INT input) |
| Chân 7 | RB1 — Bidirectional I/O port B bit 1 |
| Chân 8 | RB2 — Bidirectional I/O port B bit 2 |
| Chân 9 | RB3 — Bidirectional I/O port B bit 3 |
| Chân 10 | RB4 — Bidirectional I/O port B bit 4 |
| Chân 11 | RB5 — Bidirectional I/O port B bit 5 |
| Chân 12 | RB6 — Bidirectional I/O port B bit 6 (ICSCLK) |
| Chân 13 | RB7 — Bidirectional I/O port B bit 7 (ICSDAT) |
| Chân 14 | Vdd — Positive supply (5 V typical) |
| Chân 15 | OSC2 — Oscillator output / CLKR |
| Chân 16 | OSC1 — Oscillator input / CLKIN |
| Chân 17 | RA0 — Bidirectional I/O port A bit 0 |
| Chân 18 | RA1 — Bidirectional I/O port A bit 1 |
Ứng dụng tiêu biểu
PIC16C433T-I/SO phù hợp cho 6 Áp dụngs: Simple Appliance Control, Toy and Educational Electronics, Legacy Industrial Controller Retrofit, Sensor Signal Pre-Processing Front-End, Motor Control Signal Generator, Consumer Remote / IR Transmitter.
Simple Appliance Control
The PIC16C433T-I/SO fits simple appliance control loops where a one-time-programmed 8-bit MCU is acceptable: its 3.5 KB (2K x 14) OTP EPROM holds a small state-machine controller for toaster ovens, fan controllers, and rice cookers; its 5 bonded-out I/O in the SOIC-18 footprint are sufficient for keypad scan plus relay or triac drive; and the 10 MHz core runs a 4 ms scheduler fast enough for closed-loop temperature or timer logic. Versus a Flash PIC16F433 the OTP die lowers BOM cost per unit; versus a small 32-bit MCU the 8-bit RISC core draws less quiescent current.
Được đề xuất
Toy and Educational Electronics
For hobby-grade toys, learning labs, and educational electronics kits the PIC16C433T-I/SO is a low-cost PIC16 mid-range controller: 3.5 KB of OTP EPROM can store interactive sound/light sequencing code, 128 bytes of RAM holds the runtime state, and the 10 MHz core keeps response latency under 50 microseconds for tactile feedback. The industrial -40C to +85C rating of the 'I' suffix ensures classroom reliability. Drop-in compatibility with PIC16F433-I/SO lets developers prototype on Flash and then switch to OTP for the production run at lower unit cost.
Được đề xuất
Legacy Industrial Controller Retrofit
Industrial maintenance engineers retrofitting legacy controllers find the PIC16C433T-I/SO useful when the original factory used the same die: 18-SOIC surface-mount footprint fits modernized PCB layouts, the industrial -40C to +85C temperature range survives factory-floor environments, and the OTP EPROM is exactly the original memory type so firmware-imaged replacements preserve deterministic boot behavior. The 5 bonded I/O in the SO-18 package can directly drive opto-isolated inputs or solid-state relays. Pinout is shared with the PIC16C432/PIC16C434 sub-family, simplifying cross-stock procurement when one variant is exhausted.
Được đề xuất
Sensor Signal Pre-Processing Front-End
Use the PIC16C433T-I/SO as a pre-processing front-end for analog sensors before handing filtered data to a host controller: the 8-bit PIC16 RISC core can run a 1 kHz sample-rate digital filter inside its 3.5 KB OTP program space, the 128 bytes of RAM is enough for a moving-average buffer, and the 10 MHz clock executes ~5 MIPS giving sub-millisecond response. Industrial temperature rating is appropriate for outdoor sensor hubs. The /SO 7.50 mm wide-body SOIC is comfortable to hand-solder in lab prototypes, and the Flash-based PIC16F433-I/SO drop-in alternative lets the firmware team iterate filters quickly during development.
Được đề xuất
Motor Control Signal Generator
Small brushed DC or stepper motor controllers use the PIC16C433T-I/SO as a commutation/PWM signal generator: the 10 MHz core can produce a 20 kHz PWM with 8-bit duty resolution for motor speed control, the 5 I/O pins are sufficient for direction, brake, enable and a tachometer input, and the OTP EPROM locks the safety logic at production time so it cannot be modified in the field. The SO-18 footprint sits comfortably next to an H-bridge driver. For development, the PIC16F433-I/SO Flash sibling is software-compatible and lets engineers tune PID coefficients before locking them into the OTP production part.
Được đề xuất
Consumer Remote / IR Transmitter
A simple IR remote or RF transmitter only needs to encode a few bytes per button press - exactly what the PIC16C433T-I/SO is sized for: 3.5 KB OTP holds the protocol stack and key-scanning state machine, 128 bytes of RAM stores the transmit buffer, and the 10 MHz core produces a clean 38 kHz carrier for IR or a stable OOK pattern for sub-GHz RF. Five I/O is enough for a 5-button keypad plus a transmit LED driver. The SOIC-18 7.50 mm body fits inside a slim remote housing. Migrating to PIC16F433-I/SO is straightforward when firmware updates are needed mid-production.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C433T-I/SO — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC16C433-I/SO | PIC16C433-04I/SO | PIC16C432T-I/SO | PIC16C434T-I/SO | PIC16F433-I/SO |
|---|---|---|---|---|---|---|
| Package | SOIC-18 (7.50 mm wide) | SOIC-18 (7.50 mm wide) - same | SOIC-18 (7.50 mm wide) - same | SOIC-18 (7.50 mm wide) - same | SOIC-18 (7.50 mm wide) - same | SOIC-18 (7.50 mm wide) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | 8-bit PIC16 mid-range RISC | 8-bit PIC16 mid-range RISC - same | 8-bit PIC16 mid-range RISC - same | 8-bit PIC16 mid-range RISC - same | 8-bit PIC16 mid-range RISC - same | 8-bit PIC16 mid-range RISC - same |
| Program Memory | 3.5 KB (2K x 14) OTP EPROM | 3.5 KB (2K x 14) OTP EPROM | 3.5 KB (2K x 14) OTP EPROM | 1.75 KB (1K x 14) OTP EPROM (-50%) | 7 KB (4K x 14) OTP EPROM (+100%) | 2 KB (1K x 14) Flash (re-programmable) |
| RAM Size | 128 bytes | 128 bytes - same | 128 bytes - same | 64 bytes (-50%) | 192 bytes (+50%) | 128 bytes - same |
| Max Clock Frequency | 10 MHz | 10 MHz - same | 4 MHz (-60%) | 10 MHz - same | 10 MHz - same | 10 MHz - same |
| Memory Type | OTP EPROM | OTP EPROM - same | OTP EPROM - same | OTP EPROM - same | OTP EPROM - same | Flash (re-programmable) |
| Temperature Range | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
Bảo phân biệt quan trọng
- Industrial -40C to +85C temperature rating on the 'I' suffix (vsPIC16C433T/SO (commercial grade))
- Larger program memory than the PIC16C432 sub-family (vsPIC16C432T-I/SO)
- Tape-and-reel packaging for high-volume SMT assembly (vsPIC16C433-I/SO (tube))
Ghi chú thiết kế
Provide a 100 nF ceramic decoupling capacitor as close as possible to the Vdd pin (pin 14) with a short trace to the Vss pin (pin 5). Add a bulk electrolytic (4.7 uF to 22 uF) at the regulator output near the MCU. The PIC16C433 EPROM cell is sensitive to Vdd droop during flash erase/program cycles; for development, an oscilloscope check across Vdd during MCLR reset is recommended.
OTP EPROM is one-time-programmable only - firmware must be 100% verified before production programming. There is no field upgrade path. For development cycles, prototype on the Flash-based PIC16F433-I/SO, which shares the same SOIC-18 footprint and PIC16 mid-range instruction set, then switch to PIC16C433T-I/SO for the OTP production run once firmware is locked.
The SOIC-18 (7.50 mm wide-body) footprint is hand-solderable but production boards should use a fine-pitch stencil for solder paste. Keep the MCLR pin trace short (<25 mm) to minimize noise pickup; add a 10 kohm pull-up and a 100 nF cap-to-ground to ensure clean reset transitions. Avoid routing the OSC1/OSC2 traces near high-current switching nodes to reduce oscillator jitter.
Thông tin tuân thủ
RoHS and REACH status not explicitly stated in the provided distributor data and the part is marked obsolete; flagged [DATA_NEEDED] in specs. AEC-Q100 not applicable - this is a Microchip 8-bit legacy MCU, not an automotive-qualified part. Conflict-minerals declaration per Microchip's standard policy.