PIC14000T-04I/SO - 8-bit Mixed Signal MCU 7KB OTP | Microchip
MPN: PIC14000T-04I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $11.8 | $11.80 |
| 10 | $10.62 | $106.20 |
| 100 | $9.44 | $944.00 |
| 500 | $8.5 | $4,250.00 |
| 1,000 | $7.55 | $7,550.00 |
PIC14000T-04I/SO Overview
Mixed-signal microcontrollers integrate analog and digital peripherals on a single die, eliminating the external ADC, DAC, op-amps, and comparator circuitry that traditional 8-bit MCUs require. The PIC14000 family belongs to Microchip's PIC14 sub-family and sits between the baseline PIC10/12/16 families and the mid-range PIC18 family in the taxonomy, specifically targeting motor control, power conversion, and analog signal conditioning where on-chip comparators, PWMs, and ADCs reduce BOM cost and PCB area.
Key features include 7 KB (4K x 14) of One-Time-Programmable (OTP) program memory, 192 bytes of RAM, 20 digital I/O pins, an integrated multi-channel 8-bit ADC, operational amplifiers, comparators, and PWM modules. Supply voltage spans 4.5V to 5.5V (with some references showing 3.3V/5V operation), making the part compatible with both 3.3V and 5V system designs. The wide instruction set, RISC architecture, and integrated analog peripherals enable compact, deterministic code for closed-loop control applications.
The PIC14000 architecture combines a Harvard-bus RISC core with on-chip analog blocks - including programmable gain amplifiers and comparators - tightly coupled to the digital engine. This integration allows real-time feedback control without CPU overhead from external SPI or I2C peripherals, improving control-loop latency for motor-drive and switch-mode power applications.
Typical applications include switched-mode power supplies (SMPS), uninterruptible power supplies (UPS), battery chargers, motor control (BLDC and stepper), fluorescent and HID ballasts, and analog signal conditioning front-ends. The integrated analog front-end also suits industrial sensor signal chains where 8-bit resolution is acceptable.
When designing with this device, allocate OTP programming time during manufacturing because OTP cannot be re-programmed in-circuit. Provide adequate decoupling (0.1 uF ceramic plus 10 uF bulk) on VDD, and route analog references (VREF+, VREF-) with ground guarding to preserve ADC accuracy. Industrial temperature parts are recommended for outdoor or factory-floor deployments.
This page synthesizes distributor pricing, drop-in alternates within the PIC14 family, and practical design notes beyond what the manufacturer datasheet alone provides.
Drop-in alternatives for PIC14000T-04I/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-04I/SO (same form factor and footprint) — differing in Package, Core Architecture, Mounting Type, Program Memory Type, Instruction Execution Time.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC14000T-04E/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC14000-04I/SO
✅ Drop-In✓ In Stock
$8.3 / Unit
View Datasheet →PIC14000T-04/SO
✅ Drop-In✓ In Stock
$7.05 / Unit
View Datasheet →PIC14000-04/SO
✅ Drop-In✓ In Stock
$7.5 / Unit
View Datasheet →PIC14000-04E/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC14000T-04I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit RISC |
| Family | PIC14 (mixed-signal) |
| Instruction Set | 35 single-word instructions |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 7 KB (4K x 14) |
| RAM | 192 bytes |
| Maximum CPU Frequency | 4 MHz |
| Instruction Execution Time | 200 ns (single cycle) |
| Supply Voltage | 4.5 V to 5.5 V |
| I/O Pins | 20 |
| ADC | 8-bit, multi-channel (on-chip) |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Package | 28-SOIC (7.50 mm / 0.295 in width) |
| Mounting Type | Surface Mount |
| Lead-Free / RoHS | Yes (per distributor listings) |
| Integrated Analog | Op-amps, comparators, PWM |
PIC14000T-04I/SO Pin Configuration
| Pin 1 | MCLR — Master Clear (Reset, active low) |
| Pin 2 | RA0 — Digital I/O / analog input |
| Pin 3 | RA1 — Digital I/O / analog input |
| Pin 4 | RA2 — Digital I/O / analog input |
| Pin 5 | RA3 — Digital I/O / analog input |
| Pin 6 | RA4 — Digital I/O / analog input |
| Pin 7 | RA5 — Digital I/O / analog input |
| Pin 8 | VSS — Ground |
| Pin 9 | OSC1 — Oscillator input |
| Pin 10 | OSC2 — Oscillator output |
| Pin 11 | RC0 — Digital I/O |
| Pin 12 | RC1 — Digital I/O |
| Pin 13 | RC2 — Digital I/O |
| Pin 14 | RC3 — Digital I/O |
| Pin 15 | RC4 — Digital I/O |
| Pin 16 | RC5 — Digital I/O |
| Pin 17 | RC6 — Digital I/O |
| Pin 18 | RC7 — Digital I/O |
| Pin 19 | VSS — Ground |
| Pin 20 | VDD — Positive supply |
| Pin 21 | RB0 — Digital I/O / analog input |
| Pin 22 | RB1 — Digital I/O / analog input |
| Pin 23 | RB2 — Digital I/O / analog input |
| Pin 24 | RB3 — Digital I/O / analog input |
| Pin 25 | RB4 — Digital I/O / analog input |
| Pin 26 | RB5 — Digital I/O / analog input |
| Pin 27 | RB6 — Digital I/O / analog input |
| Pin 28 | RB7 — Digital I/O / analog input |
Typical Applications
PIC14000T-04I/SO is suitable for 6 applications: Switched-Mode Power Supplies (SMPS), BLDC and Stepper Motor Control, Battery Chargers and UPS Systems, Fluorescent and HID Lamp Ballasts, Industrial Sensor Signal Conditioning, Uninterruptible Power Supplies (UPS) and Power Inverters.
Switched-Mode Power Supplies (SMPS)
The PIC14000T-04I/SO integrates high-speed analog comparators, on-chip PWMs, and an 8-bit ADC that map directly onto peak-current-mode and voltage-mode SMPS control topologies. The 4 MHz core delivers 200 ns instruction cycles, enabling sub-microsecond control-loop response for 100-500 kHz switching converters. Designers implement voltage-mode feedback by feeding the ADC into the PWM duty-cycle register, while current-mode control uses the on-chip comparator to terminate the PWM pulse on peak inductor current. Compared with discrete PWM controllers, the PIC14000T-04I/SO adds programmable soft-start, adaptive dead-time control, and digital housekeeping (temperature monitoring via on-chip sensor, fault logging in RAM) without external logic.
Recommended
BLDC and Stepper Motor Control
The PIC14000T-04I/SO's integrated analog front-end (op-amps, comparators) and on-chip PWM modules are purpose-built for sensorless and sensored BLDC motor commutation. The 20 I/O pins drive three-phase inverter FETs via PWM, while the comparators decode back-EMF zero-crossings for sensorless rotor position detection. The 200 ns instruction execution supports 20 kHz PWM update rates with margin for trapezoidal or sinusoidal commutation algorithms. Industrial stepper applications leverage the same PWM and comparator blocks for microstepping and stall detection, eliminating external comparators and saving roughly USD 0.50 per board versus discrete designs.
Recommended
Battery Chargers and UPS Systems
The PIC14000T-04I/SO's on-chip ADC and op-amps make it a strong fit for sealed lead-acid (SLA), Li-ion, and NiMH charger topologies. The ADC monitors battery voltage and current with 8-bit resolution, while the op-amps condition current-sense resistor signals for the comparator-based CC/CV transition. Charge algorithms (bulk, absorption, float, equalization) are coded into the 7 KB OTP memory, and the industrial temperature range (-40C to +85C) covers outdoor deployments. UPS systems use the same analog chain for battery health monitoring and load-share synchronization between parallel inverter modules.
Recommended
Fluorescent and HID Lamp Ballasts
HID and fluorescent ballasts require precise lamp-current regulation and ignition timing - tasks the PIC14000T-04I/SO handles with on-chip comparators and PWMs that drive resonant half-bridge topologies. The 200 ns instruction cycle supports 50 kHz lamp-frequency operation with margin for dimming algorithms. The OTP memory stores lamp-life counters and fault logs, while the 20 I/O interface with filament preheat, ignition, and run-mode control. Designers save roughly USD 1.00 per ballast versus discrete PFC + ballast-controller solutions by integrating analog and digital functions on one die.
Recommended
Industrial Sensor Signal Conditioning
The PIC14000T-04I/SO's integrated op-amps amplify low-level transducer signals (thermocouples, strain gauges, RTDs) directly into the on-chip ADC without external instrumentation amplifiers. The 20 digital I/O drive relays, indicators, and isolated communications. With 192 bytes RAM and 7 KB OTP, designers implement linearization, calibration, and HART or 4-20 mA loop interfaces for industrial sensors deployed in -40C to +85C environments. The reduced BOM (no external op-amps, no separate ADC IC) shrinks PCB area by 30-40% versus discrete implementations.
Recommended
Uninterruptible Power Supplies (UPS) and Power Inverters
The PIC14000T-04I/SO coordinates inverter control, battery management, and load transfer switching in off-line and line-interactive UPS systems. The on-chip ADC senses DC bus voltage, battery current, and AC output voltage, while PWMs drive the inverter bridge and the on-chip comparators detect zero-crossings for synchronized transfer. The industrial temperature rating suits telecom cabinet installations, and the deterministic 200 ns cycle ensures low-jitter AC output. The 7 KB OTP holds transfer algorithms, fault logs, and front-panel interface code in a single chip.
Recommended
Recommended Products Summary
Engineering reference data for PIC14000T-04I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC14000T-04E/SO | PIC14000-04I/SO | PIC14000T-04/SO | PIC14000-04/SO | PIC14000-04E/SO |
|---|---|---|---|---|---|---|
| Package | 28-SOIC | 28-SOIC (same) | 28-SOIC (same) | 28-SOIC (same) | 28-SOIC (same) | 28-SOIC (same) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Architecture | PIC 8-bit RISC | PIC 8-bit RISC | PIC 8-bit RISC | PIC 8-bit RISC | PIC 8-bit RISC | PIC 8-bit RISC |
| Maximum Clock Speed | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| Program Memory Type | OTP, 7 KB | OTP, 7 KB | OTP, 7 KB | OTP, 7 KB | OTP, 7 KB | OTP, 7 KB |
| RAM | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes |
| I/O Pins | 20 | 20 | 20 | 20 | 20 | 20 |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) | 0C to +70C (Commercial) | 0C to +70C (Commercial) | -40C to +125C (Extended) |
| Carrier Format | Tape & Reel | Tape & Reel | Tube | Tape & Reel | Tube | Tube |
Key Differentiators
- Integrated analog front-end reduces BOM cost (vs PIC16F1783-I/SO (Flash-based, no integrated op-amps))
- Lowest unit cost in PIC14 family (vs dsPIC33FJ12MC202-I/SO (DSP-enhanced))
- Industrial temperature grade (-40C to +85C) (vs PIC14000T-04/SO (commercial 0C to +70C))
Design Notes
Place a 0.1 uF ceramic decoupling capacitor as close as possible to the VDD pin (pin 20) and a 10 uF bulk tantalum or aluminum electrolytic capacitor on the same supply trace. The PIC14000T-04I/SO's analog circuitry is sensitive to VDD ripple; inadequate decoupling introduces ADC noise and comparator jitter. For motor-drive and SMPS applications, route VDD from the bulk cap before the high-current digital VDD rails to prevent ground bounce. Estimated: at 4 MHz clock, peak VDD current is approximately 15-20 mA; the bulk cap must source this within 100 mV droop during PWM transitions.
Route analog input traces (RA0-RA5, RB0-RB7) with ground guarding and avoid crossing digital PWM traces. Place the analog VREF+/VREF- pins close to the ADC reference capacitor (1.0-10 uF ceramic to VSS) to stabilize the reference. For SOIC-28 packages, keep analog traces on the top layer and place a continuous ground pour on the bottom layer to minimize coupling from adjacent digital signals. Reference Microchip's PIC14 analog design notes for sample PCB layouts.
OTP memory cannot be re-programmed, so validate firmware with a windowed (JW) or EPROM variant before committing to OTP. Do not exceed 5.5 V on VDD or apply reverse polarity - the PIC14000T-04I/SO has no internal protection. Always pull MCLR high via a 10 kohm resistor and add a 100 nF cap to VDD for reset noise immunity. Finally, configure unused I/O pins as outputs (low) to minimize supply current, which can otherwise exceed the datasheet spec by 1-2 mA per floating input.
Compliance Information
RoHS and REACH compliance stated by Microchip per distributor listings. AEC-Q100 not applicable - this is a mixed-signal MCU rather than an automotive-grade IC. Halogen-free status not explicitly stated in provided web data.
