PIC14000-20I/SP - 8-Bit 20MHz Mixed-Signal MCU | Microchip
MPN: PIC14000-20I/SP ✓ Hoạt độngPIC14000-20I/SP Tóm tắt
The PIC14000 belongs to the broader PIC microcontroller family (8-bit MCU -> microcontroller -> embedded controller -> semiconductor IC). As an 8-bit mixed-signal MCU it combines a CPU, on-chip analog, and power-management peripherals in a single die, eliminating the need for external ADC and reference ICs in cost-sensitive analog control loops.
Key features include an on-chip temperature sensor, a bandgap voltage reference, an internal RC oscillator, a Sigma-Delta slope A/D converter, a 4-bit programmable current source, an LVD (Low Voltage Detector), a voltage-regulator control output, and a programmable reference generator. The 35-instruction RISC ISA keeps code authoring simple, and only program-branch instructions take two cycles; every other single-word instruction executes in one cycle. The OTP program memory supports low-volume production, while the 192-byte SRAM and 8 hardware registers suit small closed-loop control tasks.
The integrated Sigma-Delta slope A/D, current source, and bandgap reference let designers build closed-loop analog control (e.g., battery chargers, temperature regulators, current sources) with no external ADC chip. The on-chip LVD and regulator-control output simplify power-supply supervision and switching-converter interface, while the integrated analog blocks reduce BOM count and PCB area.
Typical applications include battery chargers, switched-mode power supply controllers, temperature regulators, programmable current sources, smart battery management, and industrial process-control loops where the integrated analog front-end eliminates a separate ADC IC.
When designing with this part, allocate OTP programming time during prototyping and verify the Sigma-Delta slope converter's sampling-rate limit against the closed-loop bandwidth you require; for higher throughput consider an external SAR ADC or migrate to PIC16/18 families.
This page synthesizes distributor pricing, drop-in same-package alternatives, and engineering notes beyond the Microchip datasheet summary, giving buyers and hardware engineers a single decision-ready reference.
Bộ thay thế dễ dàng lắp đặt cho PIC14000-20I/SP — 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 PIC14000-20I/SP (cùng hình factor và footprint) — khác nhau ở Maximum Clock Frequency, Mounting Type, Package.
PIC14000-20I/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC14000-20/SP
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC14000-04/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC14000-20I/SP-MIL
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC14000-20I/SP Tỷ lệ tối đa & tính chất điện
| Core Processor | PIC |
| Core Size | 8-bit |
| Family | PIC® 14 |
| Tần số xung maksimum | 20 MHz |
| Instruction Cycle Time | 200 ns |
| Program Memory Type | OTP |
| Program Memory Size | 7 KB (4K x 14) |
| RAM Size | 192 x 8 bytes |
| Number of I/O | 20 |
| Instruction Set | 35 single-word instructions |
| A/D Converter | Sigma-Delta slope converter (on-chip) |
| Temperature Sensor | On-chip |
| Voltage Reference | On-chip bandgap |
| Programmable Current Source | 4-bit (on-chip) |
| Low Voltage Detector (LVD) | Yes (on-chip) |
| Voltage Regulator Control Output | Yes (on-chip) |
| Oscillator | Internal RC |
| Hộp | 28-SPDIP (0.300 in / 7.62 mm) |
| Kiểu lắp đặt | Through-Hole |
| Operating Temperature (Industrial) | -40C to +85C |
Cấu hình chân PIC14000-20I/SP
| Chân 1 | RA0/AN0 — Digital I/O / analog input channel 0 |
| Chân 2 | RA1/AN1 — Digital I/O / analog input channel 1 |
| Chân 3 | RA2/AN2 — Digital I/O / analog input channel 2 |
| Chân 4 | RA3/AN3 — Digital I/O / analog input channel 3 |
| Chân 5 | RA4 — Digital I/O |
| Chân 6 | RA5/MCLR — Digital I/O / Master Clear (reset) input |
| Chân 7 | VSS — Ground reference |
| Chân 8 | OSC1 — Oscillator input / external clock |
| Chân 9 | OSC2 — Oscillator output |
| Chân 10 | RC0 — Digital I/O port C bit 0 |
| Chân 11 | RC1 — Digital I/O port C bit 1 |
| Chân 12 | RC2 — Digital I/O port C bit 2 |
| Chân 13 | RC3 — Digital I/O port C bit 3 |
| Chân 14 | RC4 — Digital I/O port C bit 4 |
| Chân 15 | RC5 — Digital I/O port C bit 5 |
| Chân 16 | RC6 — Digital I/O port C bit 6 |
| Chân 17 | RC7 — Digital I/O port C bit 7 |
| Chân 18 | VSS — Ground reference |
| Chân 19 | VDD — Positive supply voltage |
| Chân 20 | RB0/INT — Digital I/O port B bit 0 / external interrupt |
| Chân 21 | RB1 — Digital I/O port B bit 1 |
| Chân 22 | RB2 — Digital I/O port B bit 2 |
| Chân 23 | RB3 — Digital I/O port B bit 3 |
| Chân 24 | RB4 — Digital I/O port B bit 4 |
| Chân 25 | RB5 — Digital I/O port B bit 5 |
| Chân 26 | RB6 — Digital I/O port B bit 6 |
| Chân 27 | RB7 — Digital I/O port B bit 7 |
| Chân 28 | VDD — Positive supply voltage |
Ứng dụng tiêu biểu
PIC14000-20I/SP phù hợp cho 6 Áp dụngs: Battery Charger Controller, Switched-Mode Power Supply Controller, Temperature Regulator / Sensor Node, Programmable Current Source, Smart Battery Management / Gas Gauge, Industrial Process Control Loop.
Battery Charger Controller
The PIC14000-20I/SP fits battery charger designs because its on-chip Sigma-Delta slope A/D, 4-bit programmable current source, and bandgap voltage reference form a closed-loop charging analog front-end without external ADC or reference ICs. The integrated LVD supervises cell voltage for safe termination, while the voltage-regulator control output can PWM an external buck/linear pass element. The 7 KB OTP program memory holds charge profiles for Li-ion, NiMH, or SLA chemistries, and the 200 ns instruction cycle is sufficient for CC/CV state-machine control. The 20-pin digital I/O drives status LEDs, buttons, and the SMBus/I2C interface to a host gauge IC.
Được đề xuất
Switched-Mode Power Supply Controller
The PIC14000-20I/SP acts as a digital SMPS controller using its on-chip voltage-regulator control output to drive an external MOSFET gate driver, while the Sigma-Delta A/D and bandgap reference provide output-voltage feedback. The LVD monitors input rail for brown-out protection, and the 4-bit programmable current source sets the current-mode control reference. With 7 KB OTP program memory and 20 MIPS effective throughput, the device runs voltage-mode or peak-current-mode control loops at moderate switching frequencies. The 28-SPDIP industrial-grade package suits through-hole assemblies in industrial power supplies.
Được đề xuất
Temperature Regulator / Sensor Node
The PIC14000-20I/SP integrates an on-chip temperature sensor with the Sigma-Delta A/D and bandgap reference, eliminating external RTD/thermistor signal conditioning for low-precision closed-loop thermal control. The 4-bit programmable current source can bias an external diode-connected transistor for higher-accuracy sensing, and the voltage-regulator control output drives a TEC or heater FET via PWM. Industrial -40C to +85C operating temperature matches HVAC and appliance environments, while the 192-byte SRAM stores calibration and trim values. The 28-SPDIP package simplifies thermal-coupling prototyping on the bench.
Được đề xuất
Programmable Current Source
The PIC14000-20I/SP is purpose-built for programmable current-source designs: the on-chip 4-bit programmable current source provides the load current reference, the Sigma-Delta A/D measures the actual load current via a sense resistor, and the bandgap reference anchors the loop. The integrated LVD protects the load from under-voltage events, and the voltage-regulator control output can modulate the compliance voltage. With 7 KB OTP memory and 192 bytes SRAM, designers can store multi-range current profiles and run PID control. The 20-pin digital I/O exposes enable, range-select, and fault indicators.
Được đề xuất
Smart Battery Management / Gas Gauge
The PIC14000-20I/SP implements a smart battery gas-gauge by using the on-chip Sigma-Delta A/D to measure battery voltage and current via a sense resistor, and the bandgap reference to anchor coulomb counting. The 4-bit programmable current source can drive cell-balancing switches, and the LVD supervises cell voltage for over-discharge protection. The 7 KB OTP memory holds the fuel-gauge algorithm and chemistry profiles for Li-ion or NiMH packs. Industrial temperature grade and the 28-SPDIP through-hole package suit field-replaceable battery packs in industrial and medical portable equipment.
Được đề xuất
Industrial Process Control Loop
The PIC14000-20I/SP fits industrial process-control loops because its Sigma-Delta A/D, bandgap reference, and 4-bit programmable current source deliver a 4-20 mA current-loop-compatible analog front-end without external ADC ICs. The LVD supervises loop supply for fault signaling, and the voltage-regulator control output can drive an external H-bridge or proportional valve. With 7 KB OTP memory and 200 ns instruction cycle, the part executes PID and auto-tuning algorithms in real time. The 28-SPDIP industrial -40C to +85C package supports factory-floor environments with through-hole assembly for high-vibration installations.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC14000-20I/SP — 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 | PIC14000-20I/SO | PIC14000-20/SP | PIC14000-04/SS |
|---|---|---|---|---|
| Package | 28-SPDIP (0.300 in / 7.62 mm) | SOIC-28 surface-mount | SPDIP-28 through-hole (commercial grade) | SSOP-28 surface-mount |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | 8-bit PIC 20 MHz | 8-bit PIC 20 MHz | 8-bit PIC 20 MHz | 8-bit PIC 4 MHz |
| Program Memory | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP |
| RAM | 192 bytes | 192 bytes | 192 bytes | 192 bytes |
| On-chip A/D | Sigma-Delta slope converter | Sigma-Delta slope converter | Sigma-Delta slope converter | Sigma-Delta slope converter |
| I/O Pins | 20 | 20 | 20 | 20 |
| Voltage Regulator Control | Yes (on-chip) | Yes (on-chip) | Yes (on-chip) | Yes (on-chip) |
Bảo phân biệt quan trọng
- Integrated Sigma-Delta A/D, bandgap, programmable current source, LVD, and voltage-regulator control output (vsPIC16F883)
- Industrial-temperature SPDIP package for through-hole ruggedized assemblies (vsPIC14000-20/SP)
- 20 MHz speed grade with 200 ns instruction cycle (vsPIC14000-04/SS)
Ghi chú thiết kế
PIC14000 program memory is OTP (One-Time-Programmable), not Flash. Prototype firmware must be developed on a UV-erasable PIC14000-04 windowed part or emulated on a PIC16F883 equivalent before committing to OTP. OTP programming time per chip is typically several seconds, so plan assembly-test firmware-loading steps accordingly.
The 28-SPDIP package (0.300 in / 7.62 mm body) requires through-hole pads on a 2.54 mm pitch row pattern. Place a 100 nF decoupling capacitor within 5 mm of each VDD pin (pins 19 and 28), and add a bulk 10 uF tantalum or ceramic capacitor at the package supply entry. Keep the OSC1/OSC2 trace length under 10 mm and shield with a ground guard ring if the analog Sigma-Delta converter is used.
The on-chip Sigma-Delta slope A/D is optimized for low-bandwidth precision measurements (typically sub-kHz). Estimate: at a 100 Hz sampling rate the converter achieves effective resolution of about 10-12 bits. For higher bandwidth or higher dynamic range, add an external SAR ADC (e.g., MCP3001) or migrate to a PIC18 family with on-chip 10/12-bit successive-approximation ADC.
Thông tin tuân thủ
RoHS/REACH/lead-free status not stated in the verified web data; consult Microchip product page or datasheet 40122B for the specific finish/lead-free designation. Not AEC-Q100 qualified (industrial-grade MCU, not automotive).
