PIC14000T-20I/SO - 8-Bit Mixed Signal MCU 7KB OTP 28-SOIC | Microchip
MPN: PIC14000T-20I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.45 | $6.45 |
| 10 | $5.8 | $58.00 |
| 100 | $5.18 | $518.00 |
| 500 | $4.62 | $2,310.00 |
| 1,000 | $4.05 | $4,050.00 |
PIC14000T-20I/SO Overview
A PIC (Peripheral Interface Controller) microcontroller is a Harvard-architecture RISC processor optimized for embedded control, widely deployed in automotive, industrial, and consumer applications. The PIC14000 sits within the broader hierarchy of microcontrollers -> embedded processors -> integrated circuits. Its mixed-signal nature positions it specifically within the analog/mixed-signal MCU subcategory, distinguished by integrated peripherals such as comparators, A/D converter channels, and PWM modules.
Key features of this variant include a 20 MHz maximum operating frequency, an industrial temperature grade (-40C to +85C) indicated by the 'I' suffix, a tape-and-reel packaging code (T), and surface-mount SO-28 gull-wing leads. The instruction set simplifies code development and reduces learning curve for engineers familiar with PIC microcontrollers, while the OTP memory enables cost-effective production for high-volume applications. Integrated peripherals include multiple analog comparators, capture/compare/PWM modules, and a multi-channel ADC, supporting sensor interface and motor control tasks.
The PIC14000 architecture combines a high-performance RISC CPU with mixed-signal peripherals on a single die, eliminating external A/D converters and op-amps in many signal-conditioning applications. This integration reduces BOM count, board area, and system cost. The Harvard architecture separates program and data buses, enabling simultaneous fetch and execution and contributing to the deterministic single-cycle instruction execution that characterizes PIC devices.
Typical applications include industrial process control, sensor signal conditioning, smart battery chargers, motor control loops, and analog front-end interfaces. Its mixed-signal capability is particularly suited to applications that combine digital logic with analog sensor inputs and closed-loop feedback. Designers often pair the PIC14000 with precision op-amps, voltage references, and isolated communication transceivers to complete mixed-signal subsystems.
When designing with the PIC14000T-20I/SO, consider that OTP memory cannot be reprogrammed in-circuit - code must be burned before final assembly, which influences production flow and firmware revision strategy. Adequate decoupling capacitors (typically 100 nF ceramic plus bulk) near VDD/AVDD and VSS/AVSS pins are essential for ADC accuracy and noise immunity.
This page synthesizes distributor pricing, OTP-vs-Flash alternatives within the PIC14 family, and practical design notes that go beyond the manufacturer datasheet to support sourcing and design decisions.
Drop-in alternatives for PIC14000T-20I/SO — 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 PIC14000T-20I/SO (same form factor and footprint) — differing in Program Memory Type, Package, Mounting Type, RoHS Status, Maximum Clock Frequency.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
No drop-in alternatives available for this product.
Request AlternativesPIC14000T-20I/SO Maximum Ratings & Electrical Characteristics
| Product Family | PIC® 14 |
| Core | 8-bit PIC RISC |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 7 KB (4K x 14) |
| RAM Size | 192 x 8 bytes |
| Maximum Clock Frequency | 20 MHz |
| Instruction Execution Time | 200 ns |
| Number of Instructions | 35 (single word) |
| Instruction Cycles | 1 (2 for branches) |
| Package | 28-pin SOIC (SO) |
| Mounting Type | Surface Mount (Gull-Wing) |
| Operating Temperature Grade | Industrial (-40C to +85C) |
| Architecture | Harvard, RISC |
| Device Type | Mixed-Signal Microcontroller |
| RoHS Status | Compliant |
PIC14000T-20I/SO Pin Configuration
| Pin 1 | MCLR — Master Clear (reset) input, active low |
| Pin 2 | RA0/AN0 — GPIO/Analog input |
| Pin 3 | RA1/AN1 — GPIO/Analog input |
| Pin 4 | RA2/AN2 — GPIO/Analog input |
| Pin 5 | RA3/AN3 — GPIO/Analog input |
| Pin 6 | RA4 — GPIO (open-drain option) |
| Pin 7 | RA5 — GPIO |
| Pin 8 | VSS — Digital ground |
| Pin 9 | OSC1 — Oscillator input / external clock |
| Pin 10 | OSC2 — Oscillator output |
| Pin 11 | RC0 — GPIO / PWM output |
| Pin 12 | RC1 — GPIO / PWM output |
| Pin 13 | RC2 — GPIO / PWM output |
| Pin 14 | RC3 — GPIO / PWM output |
| Pin 15 | RC4 — GPIO |
| Pin 16 | RC5 — GPIO |
| Pin 17 | RC6 — GPIO / TX |
| Pin 18 | RC7 — GPIO / RX |
| Pin 19 | VSS — Digital ground |
| Pin 20 | VDD — Digital supply |
| Pin 21 | RB0/INT — GPIO / External interrupt |
| Pin 22 | RB1 — GPIO |
| Pin 23 | RB2 — GPIO |
| Pin 24 | RB3 — GPIO |
| Pin 25 | RB4 — GPIO / interrupt-on-change |
| Pin 26 | RB5 — GPIO / interrupt-on-change |
| Pin 27 | RB6 — GPIO / interrupt-on-change |
| Pin 28 | RB7 — GPIO / interrupt-on-change |
Typical Applications
PIC14000T-20I/SO is suitable for 6 applications: Industrial Sensor Signal Conditioning, Closed-Loop Motor Control, Smart Battery Charging, Analog Front-End Subsystem, Process Control Instrumentation, Appliance Control Boards.
Industrial Sensor Signal Conditioning
The PIC14000T-20I/SO is ideally suited for industrial sensor signal conditioning where both analog and digital signal processing are required. Its integrated analog comparators and multi-channel ADC enable direct interfacing with thermocouples, RTDs, strain gauges, and pressure sensors, while the 20 MHz PIC RISC core runs PID control loops with deterministic 200 ns cycle times. The 192-byte RAM supports real-time filter coefficients and the 7 KB OTP holds calibration tables. Industrial -40C to +85C temperature rating allows deployment in factory-floor enclosures without additional thermal management.
Recommended
Closed-Loop Motor Control
For DC brushed or unipolar stepper motor control, the PIC14000T-20I/SO provides PWM modules, capture/compare timers, and integrated analog comparators that simplify H-bridge feedback loops. The 20 MHz instruction rate delivers high-resolution PWM at 10 kHz switching frequency while leaving CPU bandwidth for trajectory planning. The 28-SOIC package provides adequate thermal dissipation for industrial motor drivers, and the OTP memory locks firmware to prevent field tampering. Designers typically pair it with gate drivers and current-sense amplifiers in BLDC or stepper modules.
Recommended
Smart Battery Charging
The PIC14000T-20I/SO supports multi-stage smart battery charging algorithms by combining its ADC for voltage and current sensing, comparators for over-voltage/over-current protection, and PWM outputs for buck-converter control. The 7 KB OTP memory holds charge profiles for Li-ion, NiMH, and lead-acid chemistries without external EEPROM. Industrial temperature grade ensures reliable operation in charger enclosures. The Harvard RISC architecture delivers deterministic interrupt response, critical for synchronous rectification timing.
Recommended
Analog Front-End Subsystem
In distributed analog front-end designs, the PIC14000T-20I/SO serves as a local controller that digitizes analog signals and forwards processed data over UART, SPI, or I2C to a host processor. Its mixed-signal integration - comparators, ADC, and PWM - replaces 3-4 discrete components per channel, reducing BOM cost. The 20 MHz MIPS rate supports real-time FFT preprocessing or Kalman filtering for vibration and acoustic monitoring. Surface-mount SOIC-28 assembly fits standard reflow profiles used in mixed-signal PCBs.
Recommended
Process Control Instrumentation
For loop-powered process transmitters (4-20 mA) and HART-compatible field instruments, the PIC14000T-20I/SO provides the analog processing and digital control needed for transmitter designs. Its low-power PIC14 core extends battery life in wirelessHART nodes, while the integrated ADC and comparators handle sensor linearization. OTP memory ensures calibration data integrity over the instrument's lifetime. Industrial temperature rating supports outdoor installations and process plant environments.
Recommended
Appliance Control Boards
The PIC14000T-20I/SO is well matched to white-goods control boards for washing machines, dishwashers, and HVAC systems where mixed-signal I/O (water level sensors, motor phase currents, user keypads) must be processed in real time. Its 35-instruction RISC core simplifies IEC 60730 Class B safety firmware certification, and the OTP memory locks the certified code image. The SOIC-28 package is compatible with high-volume SMT lines, and the industrial temperature grade handles appliance operating environments.
Recommended
Recommended Products Summary
Engineering reference data for PIC14000T-20I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC14000T-20/SO | PIC14000T-04I/SO | PIC14000T-20I/SS | PIC14000-04/SS | PIC14000-04I/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC (SO) | 28-SOIC (SO) - same | 28-SOIC (SO) - same | 28-SSOP (SS) | 28-SSOP (SS) | 28-SSOP (SS) |
| Maximum Clock Frequency | 20 MHz | 20 MHz | 4 MHz | 20 MHz | 4 MHz | 4 MHz |
| Instruction Execution Time | 200 ns | 200 ns | 1000 ns | 200 ns | 1000 ns | 1000 ns |
| Program Memory Type | OTP (7 KB) | OTP (7 KB) | OTP (7 KB) | OTP (7 KB) | OTP (7 KB) | OTP (7 KB) |
| RAM Size | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes |
| Temperature Grade | Industrial (-40C to +85C) | Commercial (0C to +70C) | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Commercial (0C to +70C) | Industrial (-40C to +85C) |
| Packaging Form | Tape & Reel (T) | Tape & Reel (T) | Tape & Reel (T) | Tape & Reel (T) | Tube | Tube |
Key Differentiators
- Industrial temperature grade within the PIC14000 family (vs PIC14000T-20/SO)
- 5x faster clock than 4 MHz variant (vs PIC14000T-04I/SO)
- 28-SOIC wide-body package for hand-solder and prototype work (vs PIC14000T-20I/SS)
Design Notes
Decouple VDD and VSS with a 100 nF ceramic capacitor placed within 5 mm of the supply pins, plus a bulk 10 uF tantalum or aluminum polymer capacitor. For mixed-signal designs, separate AVDD and AVSS analog supplies from VDD/VSS digital rails using ferrite beads or pi-filters to isolate ADC noise from switching digital logic. Place bypass capacitors on the same PCB layer with short, direct traces to minimize parasitic inductance.
The 28-SOIC has 1.27 mm lead pitch and 7.5 mm body width - use a 0.5 mm wide SMT land pad with 1.5 mm length and a thermal relief pattern to balance solder joint reliability with hand-rework ease. Keep traces under the IC body minimal; route GPIO and analog signals to side breaks in the land pattern. Maintain a continuous ground plane on layer 2 for return current integrity.
OTP memory cannot be erased after programming - design the firmware build flow so the final image is verified before device programming. Use a programmer with serialization and checksum verification to prevent production errors. For prototype development, consider a Flash-based equivalent from the PIC16F or PIC18F family to allow in-circuit firmware updates before committing to the OTP image.
When using the internal ADC, avoid toggling digital GPIO ports during ADC conversions - port switching generates ground bounce that couples into the analog input. Use sleep mode or disable unused peripherals during critical analog measurements. Keep analog input traces short and guarded by ground on both sides to minimize capacitive pickup from nearby digital signals.
Compliance Information
RoHS and REACH compliant per Microchip product declaration. Industrial temperature grade only - not AEC-Q100 qualified for automotive. Lead-free matte-tin finish. Conflict-mineral compliant per Microchip policy.
