PIC14000-20I/SP - 8-Bit 20MHz Mixed-Signal MCU | Microchip
MPN: PIC14000-20I/SP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $14.08 | $14.08 |
| 10 | $12.67 | $126.70 |
| 100 | $11.27 | $1,127.00 |
| 500 | $9.86 | $4,930.00 |
| 1,000 | $8.46 | $8,460.00 |
PIC14000-20I/SP Overview
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.
Drop-in alternatives for PIC14000-20I/SP — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC14000-20I/SP (same form factor and footprint) — differing in Maximum Clock Frequency, Mounting Type, Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC14000-20I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC14000-20/SP
✅ Drop-In📋 Reference alternative (not in catalog)
PIC14000-04/SS
✅ Drop-In✓ In Stock
$4.4 / Unit
View Datasheet →PIC14000-20I/SP-MIL
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC14000-20I/SP Maximum Ratings & Electrical Characteristics
| Core Processor | PIC |
| Core Size | 8-bit |
| Family | PIC® 14 |
| Maximum Clock Frequency | 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 |
| Package | 28-SPDIP (0.300 in / 7.62 mm) |
| Mounting Type | Through-Hole |
| Operating Temperature (Industrial) | -40C to +85C |
PIC14000-20I/SP Pin Configuration
| Pin 1 | RA0/AN0 — Digital I/O / analog input channel 0 |
| Pin 2 | RA1/AN1 — Digital I/O / analog input channel 1 |
| Pin 3 | RA2/AN2 — Digital I/O / analog input channel 2 |
| Pin 4 | RA3/AN3 — Digital I/O / analog input channel 3 |
| Pin 5 | RA4 — Digital I/O |
| Pin 6 | RA5/MCLR — Digital I/O / Master Clear (reset) input |
| Pin 7 | VSS — Ground reference |
| Pin 8 | OSC1 — Oscillator input / external clock |
| Pin 9 | OSC2 — Oscillator output |
| Pin 10 | RC0 — Digital I/O port C bit 0 |
| Pin 11 | RC1 — Digital I/O port C bit 1 |
| Pin 12 | RC2 — Digital I/O port C bit 2 |
| Pin 13 | RC3 — Digital I/O port C bit 3 |
| Pin 14 | RC4 — Digital I/O port C bit 4 |
| Pin 15 | RC5 — Digital I/O port C bit 5 |
| Pin 16 | RC6 — Digital I/O port C bit 6 |
| Pin 17 | RC7 — Digital I/O port C bit 7 |
| Pin 18 | VSS — Ground reference |
| Pin 19 | VDD — Positive supply voltage |
| Pin 20 | RB0/INT — Digital I/O port B bit 0 / external interrupt |
| Pin 21 | RB1 — Digital I/O port B bit 1 |
| Pin 22 | RB2 — Digital I/O port B bit 2 |
| Pin 23 | RB3 — Digital I/O port B bit 3 |
| Pin 24 | RB4 — Digital I/O port B bit 4 |
| Pin 25 | RB5 — Digital I/O port B bit 5 |
| Pin 26 | RB6 — Digital I/O port B bit 6 |
| Pin 27 | RB7 — Digital I/O port B bit 7 |
| Pin 28 | VDD — Positive supply voltage |
Typical Applications
PIC14000-20I/SP is suitable for 6 applications: 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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
Recommended Products Summary
Engineering reference data for PIC14000-20I/SP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | 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) |
Key Differentiators
- Integrated Sigma-Delta A/D, bandgap, programmable current source, LVD, and voltage-regulator control output (vs PIC16F883)
- Industrial-temperature SPDIP package for through-hole ruggedized assemblies (vs PIC14000-20/SP)
- 20 MHz speed grade with 200 ns instruction cycle (vs PIC14000-04/SS)
Design Notes
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.
Compliance Information
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).
