PIC18F1230-I/P - 8-Bit 40MHz 4KB Flash MCU 18-PDIP | Microchip
MPN: PIC18F1230-I/P ✓ Hoạt độngPIC18F1230-I/P Tóm tắt
An 8-bit PIC microcontroller is a Harvard-architecture RISC CPU that executes one instruction per clock cycle (excluding branches) and stores its program code in non-volatile Flash, allowing in-system reprogramming via ICSP. The PIC18 family sits above the baseline PIC16 line with deeper pipelining, a wider 16-bit instruction word, and a richer peripheral set, making it the workhorse tier for cost-sensitive motor control and sensor-interface designs.
Key specifications include 4 KB Flash (2K x 16 words), 256 bytes of SRAM, 16 GPIO, the integrated 10-bit A/D converter with multiple input channels, a dedicated Power Control PWM (PCPWM) module suited for driving MOSFETs in half-bridge and full-bridge topologies, and nanoWatt power-saving modes (Idle, Sleep, and oscillator switching). The wide 4.2 V - 5.5 V supply range allows direct regulation from a 5 V rail or a USB-powered bus.
Architecturally, the PIC18F1230 shares its silicon die and peripheral set with the 8 KB-flash sibling PIC18F1330; the two parts differ only in program-memory density and are otherwise interchangeable on the same PCB. Internally the CPU executes a 16-bit instruction set, the Flash is self-programmable under software control, and the PCPWM block supports complementary outputs with programmable dead-band delay - a feature rarely found on competing 18-pin MCUs.
Typical applications include sensor-conditioned motor control (BLDC, brushed DC, and small 3-phase inverters), power-conversion control loops, fan and pump controllers, low-cost SMPS primary-side regulation, and industrial instrumentation front-ends. In these roles the high-performance PWM and on-chip A/D reduce the BOM by eliminating an external gate-driver logic array.
Designers should allocate at least 0.1 µF decoupling on VDD and AVSS, follow Microchip's PCB layout recommendations for the analog section to preserve A/D accuracy, and verify that the chosen oscillator mode meets the 40 MHz FOSC limit. The ICSP/ICD interface uses pins RB6 and RB7, which must be left free of any external driver that would prevent in-circuit programming.
This page synthesises distributor pricing, drop-in same-package alternatives (PIC18F1330-I/P, PIC18F1220-I/P, PIC18F1320-I/P), and practical design notes that are not found in a single manufacturer datasheet or distributor listing.
Bộ thay thế dễ dàng lắp đặt cho PIC18F1230-I/P — 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 PIC18F1230-I/P (cùng hình factor và footprint) — khác nhau ở Package, Core Architecture, Operating Temperature Range, Timers, Program Memory (Flash).
PIC18F1330-I/P
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F1220-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F1320-I/P
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F1220-E/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F1230-I/P Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC18 8-bit RISC |
| Program Memory (Flash) | 4 KB (2K x 16 words) |
| Data Memory (SRAM) | 256 bytes |
| Maximum CPU Clock | 40 MHz |
| Supply Voltage (VDD) | 4.2 V to 5.5 V |
| I/O Pins | 16 |
| A/D Converter | 10-bit, multi-channel |
| PWM Module | Power Control PWM (PCPWM), complementary outputs with dead-band |
| Power-Saving Modes | nanoWatt: Idle, Sleep, oscillator switching |
| Nhiệt độ hoạt động | -40 °C to +85 °C (Industrial) |
| Hộp | 18-pin PDIP (DIP-18, 0.300 in / 7.62 mm) |
| Kiểu lắp đặt | Through-Hole (THT) |
| Cấp MSL | 1 (unlimited floor life) |
| Trạng thái RoHS | Compliant |
| Lead Finish | Matte Tin (Pb-free) |
Cấu hình chân PIC18F1230-I/P
| Chân 1 | RA0/AN0 — Digital I/O / analogue input channel 0 |
| Chân 2 | RA1/AN1 — Digital I/O / analogue input channel 1 |
| Chân 3 | RA2/AN2/VREF- — Digital I/O / analogue input / A/D VREF- |
| Chân 4 | RA3/AN3/VREF+ — Digital I/O / analogue input / A/D VREF+ |
| Chân 5 | RA4/AN4 — Digital I/O / analogue input channel 4 |
| Chân 6 | RA5 — Digital I/O |
| Chân 7 | VSS — Ground reference |
| Chân 8 | OSC1 — Crystal / external clock input |
| Chân 9 | OSC2 — Crystal / clock output |
| Chân 10 | PWM1 — Power Control PWM output 1 |
| Chân 11 | PWM2 — Power Control PWM output 2 |
| Chân 12 | RB0/INT0 — Digital I/O / external interrupt 0 |
| Chân 13 | RB1/INT1 — Digital I/O / external interrupt 1 |
| Chân 14 | RB2 — Digital I/O |
| Chân 15 | RB3 — Digital I/O |
| Chân 16 | RB4 — Digital I/O |
| Chân 17 | RB5/PWM3 — Digital I/O / Power Control PWM output 3 |
| Chân 18 | VDD — Positive supply (4.2 V - 5.5 V) |
Ứng dụng tiêu biểu
PIC18F1230-I/P phù hợp cho 6 Áp dụngs: Brushless DC (BLDC) Motor Control, Small 3-Phase Inverter / Fan Controller, Primary-Side SMPS Control, Sensor-Conditioning Front-End, Automotive Auxiliary Control (AEC-Q100 variants), Consumer Appliance Control.
Brushless DC (BLDC) Motor Control
The PIC18F1230-I/P is well suited to small BLDC and brushed DC motor drives because its integrated Power Control PWM (PCPWM) provides complementary outputs with programmable dead-band, eliminating the external gate-driver logic that competing 18-pin MCUs require. The 10-bit A/D simultaneously samples back-EMF or current-shunt signals for closed-loop speed and torque control. With a 40 MHz clock delivering 10 MIPS, the firmware can execute a full sensorless-commutation cycle well under 100 µs, leaving headroom for housekeeping and serial diagnostics.
Được đề xuất
Small 3-Phase Inverter / Fan Controller
In 3-phase fan and pump controllers the PIC18F1230-I/P's PCPWM module directly drives three half-bridge legs with hardware dead-band insertion, removing the software latency risk of PWM-update glitches. The 4 KB Flash holds a sinusoidal or space-vector commutation table plus PI loop, while the 256-byte SRAM retains live phase variables. Operating from 4.2 V - 5.5 V lets the MCU share the 5 V rail of a USB-powered or wall-adapter design.
Được đề xuất
Primary-Side SMPS Control
The PIC18F1230-I/P can act as a primary-side controller for isolated AC-DC or DC-DC converters, where its PCPWM drives the main MOSFET and the 10-bit A/D samples the auxiliary winding for output-voltage estimation. The 40 MHz instruction rate supports digital-compensator loops that close at 50-100 kHz PWM, well above the audible band. nanoWatt sleep modes reduce standby consumption to single-digit µA for ENERGY-STAR and EuP-compliant adapters.
Được đề xuất
Sensor-Conditioning Front-End
The on-chip 10-bit A/D and 16 GPIO make the PIC18F1230-I/P an effective front-end for industrial sensor modules that combine temperature, pressure, or position inputs. The microcontroller can scale, linearise, and serialise sensor data on a single 5 V rail, with nanoWatt modes used during sample intervals to extend battery life. With 4 KB Flash the device holds calibration tables for several sensor types, eliminating an external EEPROM in many designs.
Được đề xuất
Automotive Auxiliary Control (AEC-Q100 variants)
The PIC18F1230-I/P industrial-grade version is suitable for non-safety automotive auxiliaries such as HVAC flap motors, mirror actuators, and seat-position feedback. The integrated PCPWM and A/D let one device replace a discrete op-amp plus 8-bit timer circuit, reducing PCB area and BOM cost. For AEC-Q100-qualified designs the automotive-grade PIC18F1230-I/P variant should be specified - the industrial part is rated -40 °C to +85 °C.
Được đề xuất
Consumer Appliance Control
In white-goods and small kitchen appliances, the PIC18F1230-I/P drives TRIACs, relays, or low-side MOSFETs for heater and motor loads while reading thermistor or rotary-encoder inputs through the 10-bit A/D. The 18-pin PDIP through-hole package simplifies hand-soldered prototypes and field repairs. nanoWatt sleep plus wake-on-keypad reduces idle power below typical ENERGY-STAR standby limits for the entire appliance.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F1230-I/P — 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 | PIC18F1330-I/P | PIC18F1220-I/P | PIC18F1320-I/P |
|---|---|---|---|---|
| Package | 18-pin PDIP (DIP-18, 0.300 in) | 18-pin PDIP - same | 18-pin PDIP - same | 18-pin PDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 4 KB (2K x 16) | 8 KB (4K x 16) | 4 KB (2K x 16) | 4 KB (2K x 16) |
| SRAM | 256 B | 256 B | 256 B | 256 B |
| Max CPU Clock | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Power Control PWM | Yes (PCPWM, complementary + dead-band) | Yes (PCPWM) | No (standard CCP/PWM) | No (standard CCP/PWM) |
| A/D Converter | 10-bit, multi-channel | 10-bit, multi-channel | 10-bit, multi-channel | 10-bit, multi-channel |
| Operating Temperature | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C |
Bảo phân biệt quan trọng
- Integrated Power Control PWM with hardware dead-band (vsPIC18F1220-I/P)
- Same-package code-size upgrade path (vsPIC18F1330-I/P)
- 10 MIPS throughput at 40 MHz (vsPIC18F1320-I/P)
Ghi chú thiết kế
Place a 0.1 µF ceramic decoupling capacitor as close as possible to the VDD pin (pin 18) and a bulk 10 µF electrolytic on the same supply trace. The PIC18F1230-I/P draws up to ~25 mA at 40 MHz; without local bypassing the internal PCPWM outputs can couple noise into the A/D reference, degrading conversion accuracy. Microchip recommends separate AVSS/VSS ties at one star-ground point.
Estimated: at VDD = 5 V, FOSC = 40 MHz, the device typically dissipates ~120 mW, which is well within the 18-pin PDIP 100 °C/W theta-JA envelope. Verify in your mechanical environment that ambient + self-heating rise stays below +85 °C. Reduce FOSC or use Sleep mode for thermally constrained sealed enclosures.
The PIC18F1230-I/P is through-hole in a 0.300 in PDIP footprint. Reserve the ICSP pads on RB6/RB7 so a PICkit 5 or ICD programmer can attach in-circuit. Keep analog traces (AN0-AN4, VREF+/VREF-) short and guarded with a ground pour; route PWM traces (PWM1-PWM3) away from the A/D inputs to minimise digital-to-analogue crosstalk.
Do not pull RB6/RB7 high during reset - both pins are used for ICSP high-voltage mode. Leaving an external pull-up on either pin can prevent entry to programming mode. Also, the PCPWM module requires explicit configuration of the dead-band registers before enabling complementary outputs, otherwise a shoot-through current can destroy the external half-bridge.
Thông tin tuân thủ
Industrial-grade -40 °C to +85 °C. Pb-free matte-tin finish per Microchip product page. AEC-Q100 qualified automotive variants are sold under a different ordering code (PIC18F1230-I/P automotive version); confirm part number suffix before automotive use.
