PIC14000-04I/SO - 8-Bit 4MHz Mixed-Signal MCU | Microchip | 28-SOIC
N.º da peça: PIC14000-04I/SO ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $13.54 | $13,54 |
| 10 | $12.18 | $121,80 |
| 100 | $10.83 | $1.083,00 |
| 500 | $9.55 | $4.775,00 |
| 1.000 | $8.3 | $8.300,00 |
PIC14000-04I/SO Visão geral
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and programmable I/O peripherals onto one silicon die. PIC MCUs use a RISC-based Harvard architecture, which separates program and data memory paths to allow simultaneous instruction fetch and operand access. The PIC14xx family extends this architecture with on-chip analog peripherals such as an 8-bit ADC, voltage reference, comparators, and a switched-capacitor bandgap, making the PIC14000 specifically a 'mixed-signal controller' rather than a pure digital MCU.
Key features include 35 single-word instructions, all executing in a single cycle except program branches (which take two cycles), 200 ns instruction execution time at 20 MHz, 20 programmable digital I/O pins, 5 external interrupts, 6 internal interrupts, and an 8-bit ADC with 8 channels. The device supports multiple power-saving SLEEP modes and wakes via interrupt or reset. The 28-SOIC package provides 0.295 inch (7.50 mm) body width suitable for hand-soldering and reflow profiles in industrial designs.
The PIC14000 architecture combines a RISC core with integrated analog blocks: an 8-bit successive-approximation ADC, an on-chip voltage regulator, programmable gain stages, and charge-balancing measurement circuitry. This analog integration allows direct interface to sensors such as thermocouples and bridge-type transducers without external signal conditioning.
Typical applications include battery charging controllers, battery capacity monitoring, smart battery management, precision data logging, and standalone sensor signal conditioning. The device's combination of low-power SLEEP modes and on-chip analog makes it a fit for portable and energy-harvesting products where PCB area and BOM cost dominate.
When designing with this part, note that the PIC14000 is OTP (one-time programmable) and is marked by Microchip as 'Not Recommended for new designs' (NRND). For new designs, select PIC16F or PIC18 families. The /SO package is compatible with standard SOIC-28 footprints but requires careful thermal and EMI layout around the analog inputs.
Alternativas drop-in para PIC14000-04I/SO — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com PIC14000-04I/SO (mesmo formato e footprint) — diferindo em Package, Core Architecture, Program Memory Type, ADC, Mounting Type.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC14000-04E/SO
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC14000T-04E/SO
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC14000-04I/JW
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC14000-04/SS
✅ Drop-In✓ Em estoque
$4.4 / unidade
Ver ficha técnica →PIC14000-04E/SS
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC14000-04I/SO Classificações máximas e características elétricas
| Product Type | 8-bit Mixed-Signal Microcontroller (MCU) |
| Core Architecture | PIC RISC (Harvard) |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 7 KB (4K x 14) |
| RAM Size | 192 bytes |
| Maximum CPU Frequency | 20 MHz clock input (4 MHz instruction rate per datasheet) |
| Instruction Set Size | 35 single-word instructions |
| Instruction Execution Time | 200 ns |
| I/O Pins | 20 |
| External Interrupts | 5 |
| Internal Interrupts | 6 |
| ADC | 8-bit, 8 channels (per datasheet family description) |
| Encapsulamento | 28-SOIC (0.295 inch / 7.50 mm body width) |
| Tipo de montagem | Surface Mount |
| Temperature Grade | Industrial |
| Terminal Form | Gull Wing |
| Status RoHS | Compliant (per DigiKey listing) |
Configuração de pinos do PIC14000-04I/SO
| Pino 1 | RA0/AN0 — Digital I/O / Analog input channel 0 |
| Pino 2 | RA1/AN1 — Digital I/O / Analog input channel 1 |
| Pino 3 | RA2/AN2 — Digital I/O / Analog input channel 2 |
| Pino 4 | RA3/AN3 — Digital I/O / Analog input channel 3 |
| Pino 5 | RA4/AN4 — Digital I/O / Analog input channel 4 |
| Pino 6 | RA5/AN5 — Digital I/O / Analog input channel 5 |
| Pino 7 | RA6/AN6 — Digital I/O / Analog input channel 6 |
| Pino 8 | RA7/AN7 — Digital I/O / Analog input channel 7 |
| Pino 9 | OSC1 — Oscillator input |
| Pino 10 | OSC2 — Oscillator output |
| Pino 11 | RC0 — Digital I/O port C bit 0 |
| Pino 12 | RC1 — Digital I/O port C bit 1 |
| Pino 13 | RC2 — Digital I/O port C bit 2 |
| Pino 14 | RC3 — Digital I/O port C bit 3 |
| Pino 15 | RC4 — Digital I/O port C bit 4 |
| Pino 16 | RC5 — Digital I/O port C bit 5 |
| Pino 17 | RC6 — Digital I/O port C bit 6 |
| Pino 18 | RC7 — Digital I/O port C bit 7 |
| Pino 19 | VSS — Ground reference |
| Pino 20 | VDD — Positive supply voltage |
| Pino 21 | RB0/INT — Digital I/O / External interrupt |
| Pino 22 | RB1 — Digital I/O port B bit 1 |
| Pino 23 | RB2 — Digital I/O port B bit 2 |
| Pino 24 | RB3 — Digital I/O port B bit 3 |
| Pino 25 | RB4 — Digital I/O port B bit 4 |
| Pino 26 | RB5 — Digital I/O port B bit 5 |
| Pino 27 | RB6 — Digital I/O port B bit 6 |
| Pino 28 | RB7/MCLR — Digital I/O port B bit 7 / Master Clear (reset) |
Aplicações típicas
PIC14000-04I/SO é adequado para 6 aplicaçãos: Battery Charger Controller, Battery Capacity / Fuel Gauge Monitor, Precision Sensor Data Logger, Standalone Sensor Signal Conditioner, Portable / Handheld Measurement Device, Smart Battery Pack / SMBus Slave.
Battery Charger Controller
The PIC14000-04I/SO integrates a PIC RISC core with on-chip analog blocks specifically tuned for closed-loop battery charger control. The 8-bit ADC samples charge current and battery voltage, while the switched-capacitor bandgap reference provides a stable voltage reference independent of battery state-of-charge. With 35 instructions executing in 200 ns, the device implements CC/CV (constant-current/constant-voltage) charge profiles, end-of-scharge detection, and timer-based termination in firmware. The 28-SOIC footprint occupies minimal PCB area, ideal for charger bricks and embedded battery packs where size and BOM cost matter.
Recomendado
Battery Capacity / Fuel Gauge Monitor
The PIC14000-04I/SO is designed for capacity monitoring per its datasheet application note, where the integrated 8-bit ADC and on-chip programmable gain stage directly digitize current-sense shunt and battery voltage. The 192-byte SRAM buffers coulomb-counting accumulators, while 7 KB OTP stores calibration data, look-up tables for chemistry compensation, and SMBus/I2C state machines. Industrial temperature grade (-40C to +85C) handles automotive underhood and outdoor solar deployments, and the 28-SOIC package survives hand-solder rework common during prototyping.
Recomendado
Precision Sensor Data Logger
For unattended data logging of thermocouples, strain gauges, or bridge-type sensors, the PIC14000-04I/SO combines 8-bit ADC sampling with on-chip PGA gain stages to amplify microvolt-level signals without external instrumentation amplifiers. The PIC RISC core compresses and time-stamps samples, then writes to external EEPROM via I2C, conserving the 7 KB OTP for the logger engine and CRC routines. Low-power SLEEP modes drop quiescent current during inter-sample intervals, allowing years of battery operation in remote telemetry deployments where physical access is rare.
Recomendado
Standalone Sensor Signal Conditioner
The PIC14000-04I/SO replaces discrete op-amp signal chains with on-chip analog blocks, delivering conditioned 4-20 mA or 0-10 V outputs from raw bridge or thermocouple inputs. The 20 programmable digital I/O pins drive status LEDs, relay coils, and HMI keypads without external glue logic. Integrated 5 external interrupts handle endstop, over-range, and watchdog events with deterministic latency matching the 200 ns instruction cycle - critical for industrial process control loops.
Recomendado
Portable / Handheld Measurement Device
Battery-powered DMMs, clamp meters, and handheld medical devices benefit from the PIC14000-04I/SO's low-power SLEEP modes (microamp-range quiescent) and on-chip analog front-end that digitizes sensor signals directly. The industrial temperature grade supports outdoor and cold-storage use, while 28-SOIC enables thin handheld enclosures. Firmware-resident math routines implement RMS, peak-detect, and min/max functions using 192 bytes SRAM for sliding-window buffers.
Recomendado
Smart Battery Pack / SMBus Slave
Inside a smart battery pack, the PIC14000-04I/SO implements the SMBus slave state machine, reports StateOfCharge and StateOfHealth registers over I2C, and runs charge-balancing algorithms on cell voltages via the 8-channel ADC. The mixed-signal integration eliminates external ADC, voltage reference, and gain-stage ICs that a discrete MCU implementation would need, cutting BOM cost by 30-50% in 2-cell and 3-cell Li-ion packs.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC14000-04I/SO — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC14000-04E/SO | PIC14000T-04E/SO | PIC14000-04I/JW | PIC14000-04/SS | PIC14000-04E/SS |
|---|---|---|---|---|---|---|
| Package | 28-SOIC (0.295 inch / 7.50 mm) | 28-SOIC - same | 28-SOIC - same | 28-CDIP (windowed) - same pinout | 28-SSOP - same pinout, smaller footprint | 28-SSOP - same pinout, smaller footprint |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB EPROM (windowed) | 7 KB OTP | 7 KB OTP |
| RAM Size | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes |
| CPU Frequency | 20 MHz / 4 MHz instruction | 20 MHz / 4 MHz instruction | 20 MHz / 4 MHz instruction | 20 MHz / 4 MHz instruction | 20 MHz / 4 MHz instruction | 20 MHz / 4 MHz instruction |
| Temperature Grade | Industrial (-40C to +85C) | Extended (-40C to +125C) | Extended (-40C to +125C) | Industrial (-40C to +85C) | Commercial (0C to +70C) | Extended (-40C to +125C) |
| I/O Pins | 20 | 20 | 20 | 20 | 20 | 20 |
| Memory Type | OTP | OTP | OTP | EPROM (windowed, UV-erasable) | OTP | OTP |
| Lifecycle Status | NRND | NRND | NRND | NRND | NRND | NRND |
Principais diferenciais
- Mixed-signal on-chip analog integration (vs Generic PIC16F876A)
- Industrial temperature grade in 28-SOIC (vs PIC14000-04/SO (commercial))
- Long-term distributor availability vs NRND status (vs PIC16F917 (active flash alternative))
Notas de projeto
The PIC14000-04I/SO is OTP (one-time programmable), not flash. Once programmed, code cannot be erased or modified. Engineers should prototype with CERDIP windowed variants (e.g., PIC14000-04I/JW) before committing the SOIC-OTP version to production PCB. Microchip's MPLAB ICE and PICSTART+ programmers support both package types via separate sockets. Verify all firmware revision control discipline since field upgrades require physical chip replacement.
The 28-SOIC package has 0.295 inch (7.50 mm) body width - ensure PCB land patterns follow IPC-7351 nominal SOIC-28 footprints, with 1.27 mm pin pitch. Place a 100 nF decoupling capacitor within 5 mm of the VDD pin (pin 20) and a 10 uF bulk capacitor on the same supply trace. For analog applications, separate AGND and DGND planes and join them at a single point near the MCU VSS pin (pin 19) to minimize ADC noise coupling.
The PIC14000 analog inputs are shared with digital I/O on PORTA. When configuring a pin for ADC use, disable digital drive by clearing the corresponding TRISA bit and set the A/D control registers to high-impedance analog mode. Keep analog traces short and guarded with ground pour to avoid digital switching noise coupling into ADC readings - critical for thermocouple and bridge-sensor conditioning applications where microvolt signals are amplified.
The PIC14000-04I/SO supports multiple low-power SLEEP modes. Quiescent current drops to microamp range in deep sleep, with wake-up via external interrupt, internal timer, or watchdog reset. For battery-powered data loggers, use SLEEP between ADC samples to extend operating life by 10-100x. The on-chip bandgap and ADC remain off in SLEEP; allow 20 us settling time after wake-up before sampling for accurate conversions.
Informações de conformidade
RoHS compliance confirmed per DigiKey listing. AEC-Q100 not qualified - this is a Microchip NRND industrial-grade MCU, not automotive-qualified. For AEC-Q100 requirements, consider PIC16F or PIC18 automotive-grade variants.
