PIC12F1840-I/P - 8-bit 32MHz XLP MCU 7KB Flash | Microchip
Teilenummer: PIC12F1840-I/P ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $1.45 | $1,45 |
| 10 | $1.3 | $13,00 |
| 100 | $1.12 | $112,00 |
| 500 | $0.96 | $480,00 |
| 1.000 | $0.85 | $850,00 |
PIC12F1840-I/P Übersicht
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, RAM, and programmable peripherals into one package. The PIC12F1840 belongs to the 8-bit PIC microcontroller family, itself a subfamily of microcontrollers within the broader integrated circuit and embedded systems taxonomy. Its XLP variants extend the family into ultra-low-power domains where quiescent current is measured in nanoamperes, making the PIC12F1840-I/P a hybrid of compact 8-pin form factor and modern low-power performance.
Key features include six I/O pins multiplexed with peripherals such as a 10-bit ADC, two 8-bit timers, one 16-bit timer, Enhanced PWM, MSSP for SPI/I2C, EUSART, and configurable logic cells. The device supports internal 32 MHz oscillator, 31 kHz LFINTOSC, and PLL, eliminating external crystals in many designs. Core peripherals include a WWDT windowed watchdog, BOR/POR power management, in-circuit serial programming (ICSP), and code protection via Microchip's low-pin-count IP (US Patent 5,847,450).
Architecturally, the PIC12F1840 uses a RISC Harvard CPU with separate program and data buses, single-cycle instruction execution at 32 MHz (125 ns instruction time), and 16-deep hardware stack. The flash memory is self-read/write capable, supporting live firmware updates and data EEPROM emulation. XLP technology provides sleep currents as low as 20 nA typical, with multiple power-managed operating modes (Run, Idle, Sleep) selectable in software.
Typical applications include consumer remote controls, sensor node interfaces, battery-powered IoT edge devices, simple motor control loops, LED driving, and low-cost educational platforms. The 8-pin PDIP form factor is also widely used in retrofits for legacy PIC12F675/PIC12F683 designs, since the PIC12F1840 offers a clean migration path with substantially more memory and peripherals.
When designing with this device, ensure decoupling caps (100 nF + 10 uF bulk) are placed close to VDD/VDDCORE pins, MCLR is pulled up correctly for ICSP, and unused I/O pins are configured as outputs low to minimize current. For automotive or AEC-Q100 work, the PIC12F1840-I/P industrial grade operates from -40C to +85C, so consult the automotive grade separately if required.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in-Alternativen für PIC12F1840-I/P – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit PIC12F1840-I/P (gleiche Bauform und Footprint) – abweichend in Operating Temperature, Timers, Package, ADC, I/O Pins.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
PIC12F1840-E/P
✅ Drop-In✓ Auf Lager
$1.05 / Stück
Datenblatt ansehen →PIC12F1840-E/SN
✅ Drop-In✓ Auf Lager
$1.18 / Stück
Datenblatt ansehen →PIC12F1840-E/MF
✅ Drop-In✓ Auf Lager
$0.84 / Stück
Datenblatt ansehen →PIC12F1822-I/P
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
PIC12F1572-I/P
✅ Drop-In✓ Auf Lager
$0.84 / Stück
Datenblatt ansehen →PIC12F1501-I/P
✅ Drop-In✓ Auf Lager
$0.74 / Stück
Datenblatt ansehen →PIC12F1840-I/P Grenzwerte & elektrische Eigenschaften
| Core | PIC 8-bit enhanced mid-range |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data EEPROM | 256 bytes |
| Data SRAM | 256 bytes |
| Maximum CPU Speed | 32 MHz |
| Operating Voltage | 1.8 V to 5.5 V |
| I/O Pins | 6 |
| ADC | 10-bit, 4 channels |
| Timers | 2 x 8-bit, 1 x 16-bit |
| PWM | Enhanced PWM, up to 4 outputs |
| Communication | MSSP (I2C/SPI), EUSART |
| Instruction Set | 49 instructions, 16-level hardware stack |
| Low-Power Technology | nanoWatt XLP |
| Gehäuse | PDIP-8 (through-hole) |
| Betriebstemperatur | -40 C to +85 C (Industrial) |
| Montageart | Through-Hole |
| MSL-Level | 1 (unlimited) |
| RoHS-Status | Compliant |
PIC12F1840-I/P Pin-Konfiguration
| Pin 1 | VDD — Positive power supply input (1.8 V to 5.5 V) |
| Pin 2 | RA5 — Bidirectional I/O pin; analog AN4, CCP1, P1A, T1CKI |
| Pin 3 | RA4 — Bidirectional I/O pin; analog AN3, CLKOUT, T1G, SDO |
| Pin 4 | RA3/MCLR/VPP — Input only / Master Clear reset (active low) / ICSP programming voltage |
| Pin 5 | RC5 — Bidirectional I/O pin; analog AN5, CCP1, P1B, RX/DT |
| Pin 6 | RC4 — Bidirectional I/O pin; analog AN6, SDA, SDI, TX/CK |
| Pin 7 | RC3 — Bidirectional I/O pin; analog AN7, SCL, SCK, CCP2 |
| Pin 8 | VSS — Ground reference |
Typische Anwendungen
PIC12F1840-I/P ist geeignet für 7 Anwendungs: Battery-Powered IoT Sensor Node, Consumer Remote Control, White-Goods LED Driver Controller, Hobbyist and Education Platform, Industrial Sensor Signal Conditioning, Simple Closed-Loop Fan or Pump Controller, Retrofit Upgrade for PIC12F675 Designs.
Battery-Powered IoT Sensor Node
The PIC12F1840-I/P's nanoWatt XLP sleep mode and 1.8V minimum VDD let it run years on a coin cell for remote sensor nodes. Its 32 MHz core, 7 KB flash, and 10-bit ADC handle local filtering before waking the host. Use it as a sleep-mode MCU that wakes the main SoC only when threshold crossings occur, with the MSSP handling I2C/SPI sensor handoff. A typical design pulls 20 nA in sleep and 130 uA/MIPS active, an excellent ratio for duty-cycled IoT endpoints.
Empfohlen
Consumer Remote Control
The PIC12F1840-I/P's compact 8-PDIP package, low power, and 32 MHz CPU make it well suited to IR remote control transmitter designs. The 16-bit timer and PWM peripheral generate the 38 kHz carrier for NEC, RC5, or SIRC protocols with no software overhead, and the 6 I/O pins handle a key matrix of up to 12 buttons plus an IR LED driver. A typical coin-cell design achieves 100,000-button-press battery life thanks to the 20 nA sleep floor of nanoWatt XLP.
Empfohlen
White-Goods LED Driver Controller
The PIC12F1840-I/P's Enhanced PWM and 32 MHz core deliver precise PWM dimming for white-goods LED lighting strips, with the 16-bit timer giving 16-bit duty resolution at 1 kHz. The 6 I/O pins can drive RGB or warm/cool white channels plus a button interface for user dimming. Industrial -40 C to +85 C temperature grade and the 1.8-5.5 V supply range support direct connection to rectified 5 V or 3.3 V appliance rails without an LDO.
Empfohlen
Hobbyist and Education Platform
The PIC12F1840-I/P is a favorite on breadboards because the 0.1 inch PDIP-8 pitch accepts standard headers and the 8-pin DIP is large enough for students to probe. The 7 KB flash holds modest C programs written in MPLAB XC8, the 6 I/O pins drive LEDs, buttons, and a UART header, and the ICSP interface works with PICkit 3/4 programmers. Curriculum builds include a reaction timer, a stoplight, a tone generator, and a basic PWM motor driver.
Empfohlen
Industrial Sensor Signal Conditioning
The PIC12F1840-I/P's 10-bit ADC, 1.024 V internal reference, and 32 MHz arithmetic are well matched to bridge-sensor and 4-20 mA loop signal conditioning in industrial panels. The MSSP peripheral supports I2C communication with external EEPROMs or ADCs, while the EUSART drives RS-485 transceivers for plant-floor backhaul. The industrial -40 C to +85 C rating covers outdoor enclosures and most factory environments.
Empfohlen
Simple Closed-Loop Fan or Pump Controller
The PIC12F1840-I/P can implement a temperature-proportional closed-loop fan or pump controller using its 10-bit ADC to read an NTC thermistor and the Enhanced PWM to drive a MOSFET gate. The 32 MHz core and 49-instruction RISC architecture deliver 8 MIPS, enough to run a PID loop at 1 kHz with no software optimization. Industrial temperature grade and the 1.8-5.5 V supply make the part robust against rectified mains-rail noise.
Empfohlen
Retrofit Upgrade for PIC12F675 Designs
The PIC12F1840-I/P is a true drop-in upgrade for legacy PIC12F675 and PIC12F683 8-pin designs: same DIP-8 footprint, same pinout, and the same 8-bit PIC core family. The 7x increase in flash (7 KB vs 1 KB), 4x increase in RAM (256 B vs 64 B), higher 32 MHz clock (vs 20 MHz), and modern XLP sleep modes let a 25-year-old product gain performance without any PCB changes. Firmware must be rebuilt with the latest XC8 toolchain to support the enhanced mid-range instruction set.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für PIC12F1840-I/P – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | PIC12F1840-E/P | PIC12F1840-E/SN | PIC12F1840-E/MF | PIC12F1822-I/P | PIC12F1572-I/P | PIC12F1501-I/P |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | PDIP-8 | PDIP-8 - same | SOIC-8 | DFN-8 | PDIP-8 - same | PDIP-8 - same | PDIP-8 - same |
| Flash Memory | 7 KB | 7 KB | 7 KB | 7 KB | 3.5 KB (-50%) | 3.5 KB (-50%) | 1.75 KB (-75%) |
| Data SRAM | 256 B | 256 B | 256 B | 256 B | 128 B (-50%) | 128 B (-50%) | 64 B (-75%) |
| Maximum CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 20 MHz |
| Operating Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| I/O Pins | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| ADC | 10-bit, 4 ch | 10-bit, 4 ch | 10-bit, 4 ch | 10-bit, 4 ch | 8-bit, 4 ch | 10-bit, 4 ch | 10-bit, 4 ch |
| Low-Power Technology | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP |
| Operating Temperature | -40 C to +85 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| 1k Piece Price (USD, as of 2026-09-15) | 0.85 | 0.95 | 0.95 | 0.95 | 0.78 | 0.82 | 0.70 |
Wichtigste Unterscheidungsmerkmale
- Largest flash memory in 8-pin PIC12 family (vs. PIC12F1822-I/P)
- Highest 8-bit CPU speed in industrial grade (vs. PIC12F1501-I/P)
- Drop-in upgrade from legacy PIC12F675/PIC12F683 (vs. PIC12F675-I/P)
Designhinweise
Place a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 1) and a 10 uF bulk capacitor on the same node to suppress switching transients when the internal charge pump or PWM driver switches. The PIC12F1840-I/P draws only 20 nA typical in Sleep mode but jumps to several mA when active; the bulk cap prevents the supply rail from sagging during fast wake-and-sleep cycles. For battery designs, place a 1 MOhm pull-up on MCLR to limit quiescent draw to the absolute minimum.
Route the ICSP signals (ICSPDAT on RC4/RC5, ICSPCLK on RC3) away from high-frequency switching nodes to prevent programming failures in-circuit. The 8-PDIP package allows standard 0.1 inch prototyping headers, but production layouts should still use wide ground traces around VSS (pin 8) and provide a solid ground pour. Estimated: with a 2-layer 1 oz copper board, the ground-pour thermal resistance is approximately 80 C/W, more than enough for the 100 mW maximum dissipation of this part.
Do not leave the MCLR/RA3 pin (pin 4) floating - it is the only input-only pin and is sampled during reset. A 10 kOhm pull-up to VDD is required for normal operation; for ICSP programming, the programmer drives this pin high. A second common pitfall is configuring the ADC channel on a digital output pin - the PIC12F1840's analog pins must be explicitly set to analog mode via the ANSEL register, or the digital input buffer will load the signal and skew ADC readings.
Compliance-Informationen
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - industrial grade only; for AEC-Q100 work use the automotive-suffixed PIC12F1840 variant. Code protection covered by Microchip Low Pin Count Patent US 5,847,450.
