PIC14000T-20/SO - 8-bit 20MHz OTP MCU, 7KB | Microchip
MPN: PIC14000T-20/SO โ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.95 | $6.95 |
| 10 | $6.18 | $61.80 |
| 100 | $5.1 | $510.00 |
| 500 | $4.42 | $2,210.00 |
| 1,000 | $3.85 | $3,850.00 |
PIC14000T-20/SO Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, RAM, and peripherals. Within the wider taxonomy, the PIC14000 belongs to the 8-bit MCU family -> RISC architecture -> Harvard architecture -> PIC14 series -> mixed-signal microcontroller, ultimately classified as an embedded semiconductor. Its mixed-signal heritage distinguishes it from general-purpose 8-bit MCUs because it ships with on-chip analog peripherals tailored for sensor-driven and signal-conditioning applications.
Key features include 20 I/O pins, 20 MHz maximum clock speed, 4.5 V to 5.5 V single-supply operation, 7 KB OTP program memory, 192 x 8 bytes of data RAM, and integrated peripherals such as an 8-channel 8-bit ADC, comparators, and a slope ADC. The wide-body 28-SOIC package (0.295 in / 7.50 mm width) supports standard surface-mount reflow processes and is fully RoHS compliant. The architecture follows Microchip's RISC design with a 14-bit instruction word for code density.
Technically, the PIC14000T-20/SO is built on CMOS technology with 200 ns instruction execution and uses OTP memory for program storage. The integrated mixed-signal peripherals - including op-amps, comparators, and timers - allow direct interface to analog sensors without extensive external analog components. The device targets cost-sensitive, mixed-signal applications where integration reduces BOM count.
Typical applications include smoke detectors, security systems, sensor signal conditioning, battery chargers, motor control feedback loops, and small industrial control boards. The 20 MHz clock and on-chip analog peripherals make it well-suited for systems that must process analog signals in real time without a dedicated external ADC.
When designing with this MCU, pay attention to the OTP memory constraint - once programmed the part cannot be erased, so production-grade firmware verification must be completed on a windowed (UV-erasable) or flash-based prototype before committing. Ensure that the 28-SOIC wide-body footprint matches your PCB land pattern, and that decoupling and ADC reference design follow Microchip's mixed-signal layout guidelines.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical mixed-signal design notes not found in the manufacturer datasheet alone, helping engineers select and source the part with confidence.
Drop-in alternatives for PIC14000T-20/SO โ same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool โ Select alternative parts for side-by-side comparison:
PIC14000-20/SO
โ Drop-In๐ Reference alternative (not in catalog)
PIC14000T-20I/SO
โ Drop-Inโ In Stock
$4.05 / Unit
View Datasheet โPIC14000-04I/SO
โ Drop-In โ ๏ธ ๅๆฐๅพ ้ช่ฏ๐ Reference alternative (not in catalog)
PIC14000T-20/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit RISC (PIC14 series) |
| Instruction Set Width | 14-bit |
| Number of Instructions | 35 single-word |
| Instruction Execution Time | 200 ns |
| Maximum Clock Speed | 20 MHz |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 7 KB (4K x 14) |
| Data RAM | 192 x 8 bytes |
| Supply Voltage | 4.5 V to 5.5 V |
| I/O Pins | 20 |
| ADC | 8-channel, 8-bit (integrated) |
| Comparators | Yes (integrated) |
| Operating Temperature Grade | Commercial (0C to +70C) |
| Package | 28-pin SOIC (SO) wide-body, 0.295 in / 7.50 mm |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Technology | CMOS |
PIC14000T-20/SO Pin Configuration
| Pin 1 | MCLR/VPP โ Master Clear (reset) input / programming voltage |
| Pin 2 | RA0/AN0 โ Port A bit 0 / analog input 0 |
| Pin 3 | RA1/AN1 โ Port A bit 1 / analog input 1 |
| Pin 4 | RA2/AN2 โ Port A bit 2 / analog input 2 |
| Pin 5 | RA3/AN3 โ Port A bit 3 / analog input 3 |
| Pin 6 | RA4/AN4 โ Port A bit 4 / analog input 4 |
| Pin 7 | RA5/AN5 โ Port A bit 5 / analog input 5 |
| Pin 8 | RE0/AN6 โ Port E bit 0 / analog input 6 |
| Pin 9 | RE1/AN7 โ Port E bit 1 / analog input 7 |
| Pin 10 | OSC1/CLKIN โ Oscillator input / external clock input |
| Pin 11 | OSC2/CLKOUT โ Oscillator output |
| Pin 12 | RC0 โ Port C bit 0 |
| Pin 13 | RC1 โ Port C bit 1 |
| Pin 14 | RC2 โ Port C bit 2 |
| Pin 15 | RC3 โ Port C bit 3 |
| Pin 16 | RC4 โ Port C bit 4 |
| Pin 17 | RC5 โ Port C bit 5 |
| Pin 18 | RC6 โ Port C bit 6 |
| Pin 19 | RC7 โ Port C bit 7 |
| Pin 20 | VSS โ Ground reference |
| Pin 21 | VDD โ Positive supply voltage (4.5 V to 5.5 V) |
| Pin 22 | RB0/INT โ Port B bit 0 / external interrupt |
| Pin 23 | RB1 โ Port B bit 1 |
| Pin 24 | RB2 โ Port B bit 2 |
| Pin 25 | RB3 โ Port B bit 3 |
| Pin 26 | RB4 โ Port B bit 4 |
| Pin 27 | RB5 โ Port B bit 5 |
| Pin 28 | RB6 โ Port B bit 6 |
Typical Applications
PIC14000T-20/SO is suitable for 6 applications: Smoke Detector Control, Security and Alarm Panels, Battery Charging Controllers, Sensor Signal Conditioning, Small Motor Control Boards, Industrial Process Control.
Smoke Detector Control
The PIC14000T-20/SO is well suited for smoke detector control units where the integrated 8-channel 8-bit ADC, comparators, and slope ADC allow direct interface to ionization-chamber or photoelectric smoke sensors without an external analog front end. With 20 MHz clock and 200 ns instruction execution, the MCU can poll the sensor, run detection algorithms, and drive a piezoelectric alarm within tight response budgets. The 7 KB OTP program memory holds detection logic, calibration tables, and a low-battery supervisor. Compared with discrete microchip designs that require external ADCs and op-amps, the on-chip mixed-signal integration cuts BOM cost and PCB area for residential fire-safety products.
Recommended
Security and Alarm Panels
Security and alarm panels benefit from the PIC14000T-20/SO's 20 I/O pins and integrated mixed-signal peripherals, which let a single chip read multiple zone sensors (PIR, magnetic, glass-break), drive keypads and sirens, and manage battery charging. The 200 ns instruction cycle supports fast polling of sensor loops without missing events. 7 KB of OTP memory stores panel logic, zone configuration, and communication protocols for central-station reporting. Industrial-grade variants are available for outdoor or extreme-environment installations. Compared with microcontroller-only designs that need external ADC chips, the PIC14000T-20/SO reduces PCB complexity in cost-sensitive security products.
Recommended
Battery Charging Controllers
Battery charging controllers for lead-acid, NiMH, or Li-ion packs benefit from the PIC14000T-20/SO's on-chip comparators, ADC, and slope ADC, which can directly measure battery voltage, charge current, and temperature without external analog components. The 20 MHz clock allows real-time CC/CV (constant-current / constant-voltage) loop control with PWM outputs. 192 bytes of RAM holds charge state, while 7 KB OTP holds profile tables and safety timers. Compared with analog-only microchip charging controllers, the MCU-based design enables programmable profiles and adaptive termination. Industrial temp grade parts handle harsh automotive and industrial charging environments.
Recommended
Sensor Signal Conditioning
Sensor signal-conditioning front ends leverage the PIC14000T-20/SO's on-chip op-amps, comparators, and 8-channel ADC to amplify, filter, and digitize analog sensor outputs - thermocouples, RTDs, strain gauges, and pressure sensors. The 20 MHz instruction execution lets the MCU perform software linearization and compensation in real time. With 7 KB OTP and 192 bytes RAM, the part can hold calibration coefficients and per-channel scaling data. Compared with designs that pair an MCU with separate ADC and op-amp chips, the integrated mixed-signal peripherals reduce PCB area, noise, and total BOM cost for industrial sensor modules.
Recommended
Small Motor Control Boards
Small motor control boards - particularly for brushed DC and low-power stepper motors - use the PIC14000T-20/SO's 20 I/O pins to drive H-bridges, read back-EMF, and manage PWM commutation. The integrated comparators simplify current sensing, while the 8-channel ADC monitors supply voltage and temperature. 7 KB of OTP memory holds motor profile tables and fault-detection logic. At 20 MHz, the MCU can update PWM at high resolution while servicing protection routines. Compared with analog motor controllers, the PIC14000T-20/SO enables software-tuned acceleration curves, soft-start, and stall detection in compact motor-drive modules.
Recommended
Industrial Process Control
Industrial process control applications - such as setpoint controllers, valve drivers, and small PID loops - benefit from the PIC14000T-20/SO's 20 MHz processing, integrated ADC, and 7 KB OTP program memory. The MCU can read 4-20 mA or 0-10 V process variables, compute PID output, and drive analog or PWM outputs to actuators. The commercial temperature grade suits panel-mounted equipment; industrial variants handle field installations. Compared with microcontroller-only designs that need separate ADC chips, the integrated mixed-signal features lower BOM cost and reduce analog noise coupling in factory-automation subsystems.
Recommended
Recommended Products Summary
Engineering reference data for PIC14000T-20/SO โ comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC14000-20/SO | PIC14000T-20I/SO | PIC14000T-20/SS | PIC14000T-20I/SS | PIC14000-04I/SO | PIC14000-04/SS |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC wide-body (SO) | 28-SOIC wide-body - same | 28-SOIC wide-body - same | 28-SSOP - different footprint | 28-SSOP - different footprint | 28-SOIC wide-body - same | 28-SSOP - different footprint |
| Maximum Clock Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 4 MHz | 4 MHz |
| Program Memory | 7 KB OTP | 7 KB UV-EPROM (windowed) | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP |
| Data RAM | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes |
| Temperature Grade | Commercial (0C to +70C) | Commercial | Industrial (-40C to +85C) | Commercial | Industrial | Industrial | Commercial |
| Integrated ADC | 8-channel, 8-bit | 8-channel, 8-bit | 8-channel, 8-bit | 8-channel, 8-bit | 8-channel, 8-bit | 8-channel, 8-bit | 8-channel, 8-bit |
| Supply Voltage | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V |
Key Differentiators
- Integrated mixed-signal peripherals reduce external analog components (vs PIC16F84A-20/SO (general-purpose MCU without integrated op-amps/comparators))
- 20 MHz clock vs standard 4 MHz PIC14 parts (vs PIC14000-04I/SO (4 MHz grade))
- Commercial temperature grade priced lower than industrial (vs PIC14000T-20I/SO (industrial grade))
Design Notes
The PIC14000T-20/SO uses OTP (one-time programmable) memory, which CANNOT be erased after programming. Verify all firmware on a windowed (UV-erasable) prototype such as PIC14000-20/SO before committing to OTP production parts. Plan a re-spin window because field firmware updates are impossible without physical part replacement. Budget extra prototype units and ICSP programming time accordingly.
Place a 100 nF decoupling capacitor within 5 mm of the VDD pin (pin 21) and a bulk 10 uF tantalum or ceramic capacitor near the MCU power input. For mixed-signal accuracy, separate analog (AVDD/AVSS if exposed) and digital grounds with a single-point connection near the IC. Avoid routing high-current PWM traces under the MCU's analog input pins to minimize coupled noise on ADC readings.
The 8-bit ADC achieves rated accuracy only when the source impedance is below 10 kohm per Microchip's mixed-signal layout guidelines. Add an external op-amp buffer if your sensor exceeds this impedance. The internal voltage reference should be bypassed with 10 uF + 100 nF capacitors placed as close as possible to the VREF pin to avoid ADC reference drift during switching events.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - the PIC14000T-20/SO is targeted at commercial/industrial (not automotive) applications. For automotive designs, use AEC-Q100-qualified PIC16 or PIC18 family parts instead.
