PIC16LF1904-E/P - 8-Bit MCU, 7KB Flash, LCD, XLP | Microchip
Référence : PIC16LF1904-E/P ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $2.45 | $2,45 |
| 10 | $2.21 | $22,10 |
| 100 | $1.98 | $198,00 |
| 500 | $1.76 | $880,00 |
| 1 000 | $1.55 | $1 550,00 |
PIC16LF1904-E/P Présentation
A PIC (Peripheral Interface Controller) microcontroller is a compact RISC-based programmable processor optimized for embedded control. The PIC16LF1904 belongs to the mid-range PIC16 family, sitting between the smaller PIC10/PIC12 and the high-performance PIC18/PIC24. Within the power-management IC hierarchy, this part is a microcontroller (MCU), not a power converter; its nanoWatt XLP technology places it in the ultra-low-power MCU category alongside MSP430 and STM8L competitors.
Key features include a 10-bit ADC with up to 14 channels, multiple communication peripherals (I2C, SPI, EUSART), 4 x 8-bit timers plus 1 x 16-bit timer, an integrated LCD driver capable of driving segmented displays with up to 116 segments, and a wide operating temperature range of -40C to +125C. The 'LF' suffix denotes the low-voltage F-version optimized for 1.8V-3.3V operation, while 'E' indicates the extended temperature grade.
Architecturally, the PIC16LF1904 uses a 14-bit instruction word RISC core with a hardware stack, shadow register banks for fast context switching, and an internal oscillator that can be tuned in software. The integrated LCD module includes charge-pump voltage generation and configurable segment timing, eliminating the need for an external LCD bias generator.
Typical applications include battery-powered metering (gas/water/electric), portable medical devices such as glucose meters, home appliances with LCD displays, sensor node IoT edge devices, and industrial control panels. Its low sleep current also makes it suitable for energy-harvesting applications.
When designing with this MCU, place decoupling capacitors (100 nF plus 10 uF bulk) as close as possible to VDD/VSS pins. Configure the LCD charge pump for the lowest acceptable bias voltage to minimize power, and use the deep-sleep modes (doze/idle/sleep) with peripheral disable to maximize battery life.
This page synthesizes distributor pricing, drop-in PIC16 family alternatives, and practical design notes not found in the standalone Microchip datasheet.
Alternatives de remplacement direct pour PIC16LF1904-E/P — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC16LF1904-E/P (même facteur de forme et même empreinte) — différant par Data RAM, Mounting Type, Package, Program Memory (Flash).
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC16LF1906-E/P
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC16LF1907-E/P
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC16LF1903-E/P
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
PIC16LF1847-I/P
✅ Remplacement direct✓ En stock
$1.85 / unité
Voir la fiche technique →PIC16LF1904-E/P Valeurs maximales et caractéristiques électriques
| Core Architecture | PIC16, 8-bit RISC, 14-bit instruction word |
| Program Memory (Flash) | 7 KB (4K x 14) |
| Data RAM | 256 bytes |
| Maximum CPU Frequency | 20 MHz |
| Supply Voltage Range | 1.8 V to 3.6 V |
| Plage de température de fonctionnement | -40 C to +125 C (Extended, E suffix) |
| Timers | 4 x 8-bit, 1 x 16-bit |
| Communication Peripherals | I2C, SPI, EUSART |
| LCD Driver | Integrated, up to 116 segments |
| Boîtier | 40-pin PDIP (0.600 in, 15.24 mm) |
| Type de montage | Through-Hole |
| Low-Power Technology | nanoWatt XLP |
| Niveau MSL | 1 (unlimited) |
| Statut RoHS | Compliant |
| Lead-Free | Yes |
Configuration des broches de PIC16LF1904-E/P
| Broche 1 | RA3/AN3/VREF+ — GPIO / Analog input 3 / Voltage reference positive |
| Broche 2 | RA4/AN4 — GPIO / Analog input 4 |
| Broche 3 | RA5/MCLR/VPP — GPIO / Master Clear (Reset, active-low) / Programming voltage |
| Broche 4 | RA6/OSC2/CLKOUT — GPIO / Crystal oscillator output / Clock output |
| Broche 5 | RA7/OSC1/CLKIN — GPIO / Crystal oscillator input / External clock input |
| Broche 6 | RC0 — GPIO port C bit 0 / LCD segment |
| Broche 7 | RC1 — GPIO port C bit 1 / LCD segment |
| Broche 8 | RC2 — GPIO port C bit 2 / LCD segment |
| Broche 9 | RC3 — GPIO port C bit 3 / LCD segment |
| Broche 10 | RC4 — GPIO port C bit 4 / LCD segment |
| Broche 11 | RC5 — GPIO port C bit 5 / LCD segment |
| Broche 12 | RC6 — GPIO port C bit 6 / LCD segment |
| Broche 13 | RC7 — GPIO port C bit 7 / LCD segment |
| Broche 14 | VDD — Positive supply voltage (1.8V to 3.6V) |
| Broche 15 | VSS — Ground reference |
| Broche 16 | RB0 — GPIO port B bit 0 / LCD segment |
| Broche 17 | RB1 — GPIO port B bit 1 / LCD segment |
| Broche 18 | RB2 — GPIO port B bit 2 / LCD segment |
| Broche 19 | RB3 — GPIO port B bit 3 / LCD segment |
| Broche 20 | RB4 — GPIO port B bit 4 / LCD segment |
| Broche 21 | RB5 — GPIO port B bit 5 / LCD segment |
| Broche 22 | RB6 — GPIO port B bit 6 / ICDCLK / LCD segment |
| Broche 23 | RB7 — GPIO port B bit 7 / ICDDAT / LCD segment |
| Broche 24 | RD0 — GPIO port D bit 0 / LCD segment |
| Broche 25 | RD1 — GPIO port D bit 1 / LCD segment |
| Broche 26 | RD2 — GPIO port D bit 2 / LCD segment |
| Broche 27 | RD3 — GPIO port D bit 3 / LCD segment |
| Broche 28 | RD4 — GPIO port D bit 4 / LCD segment |
| Broche 29 | RD5 — GPIO port D bit 5 / LCD segment |
| Broche 30 | RD6 — GPIO port D bit 6 / LCD segment |
| Broche 31 | RD7 — GPIO port D bit 7 / LCD segment |
| Broche 32 | RE0 — GPIO port E bit 0 / LCD segment |
| Broche 33 | RE1 — GPIO port E bit 1 / LCD segment |
| Broche 34 | RE2 — GPIO port E bit 2 / LCD segment |
| Broche 35 | RE3 — GPIO port E bit 3 / LCD segment |
| Broche 36 | RA0/AN0 — GPIO / Analog input 0 / LCD segment |
| Broche 37 | RA1/AN1 — GPIO / Analog input 1 / LCD segment |
| Broche 38 | RA2/AN2 — GPIO / Analog input 2 / LCD segment / VREF- |
| Broche 39 | ICSPCLK — In-Circuit Serial Programming clock |
| Broche 40 | ICSPDAT — In-Circuit Serial Programming data |
Applications typiques
PIC16LF1904-E/P convient pour 6 applications: Battery-Powered Utility Meter, Portable Glucose Meter, Home Appliance Control Panel, Wireless Sensor Node Edge Device, Industrial Control Panel HMI, Automotive Aftermarket Accessory Display.
Battery-Powered Utility Meter
The PIC16LF1904-E/P is ideal for battery-powered gas, water, and electricity meters because its integrated segmented LCD driver supports up to 116 segments without an external bias generator, and its nanoWatt XLP technology delivers sub-microamp sleep current for 10+ year battery life. The 1.8V-3.6V supply range accepts two AA alkaline cells or a single Li-ion cell directly. Typical implementation drives an 8-digit numeric LCD via the on-chip charge pump at 3V bias, samples a sensor with the 10-bit ADC every few seconds, and wakes the CPU only to update the display or detect a button press.
Recommandé
Portable Glucose Meter
Portable blood-glucose meters benefit from the PIC16LF1904-E/P's integrated LCD driver for showing test results and historical trends, plus its low active current that extends battery life across thousands of test cycles. The 10-bit ADC interfaces directly with electrochemical glucose test strips via an op-amp front-end; the EUSART peripheral streams results to a Bluetooth companion IC for smartphone pairing. Sleep current below 1 uA between measurements lets a single CR2032 coin cell power the meter for 12+ months of typical use.
Recommandé
Home Appliance Control Panel
The PIC16LF1904-E/P fits washing machines, microwave ovens, and dishwasher control panels where a 4- to 8-digit segmented LCD shows time, status, and program selection. Its 14-channel 10-bit ADC reads multiple temperature and level sensors simultaneously, and the four 8-bit timers drive PWM outputs for relays and buzzer tones. The extended -40C to +125C temperature grade tolerates the elevated ambient near heating elements and induction drivers, while the integrated LCD charge pump eliminates the need for a separate bias inverter on the display.
Recommandé
Wireless Sensor Node Edge Device
IoT edge sensor nodes benefit from the PIC16LF1904-E/P's nanoWatt XLP sleep current, which keeps total system quiescent draw below the sub-microamp threshold needed for energy harvesting from indoor solar cells or thermal gradients. The MCU wakes on a sensor interrupt, performs a single ADC conversion, computes the result, transmits via SPI to a sub-GHz radio module, and returns to deep sleep. The integrated LCD can show last reading and signal strength without waking the radio.
Recommandé
Industrial Control Panel HMI
Industrial HMIs use the PIC16LF1904-E/P to drive segmented LCD readouts for motor speed, valve position, and alarm status. The 40-pin PDIP package is easy to hand-solder for prototyping, and the wide -40C to +125C operating range tolerates factory-floor temperatures. Multiple PWM channels control analog gauge backlights and indicator LEDs, while the EUSART connects to a PLC or industrial bus interface. The 7 KB Flash holds the HMI state machine plus diagnostic logging.
Recommandé
Automotive Aftermarket Accessory Display
After-market automotive accessories such as tire-pressure monitors, boost gauges, and trip computers use the PIC16LF1904-E/P to drive segmented LCDs that show real-time vehicle data. The extended -40C to +125C temperature grade covers the harsh automotive interior and engine-bay environments, and the wide 1.8V-3.6V supply accepts regulated 12V-to-3.3V rails derived from the car battery. The 10-bit ADC reads analog sensors like temperature probes and fuel-level senders directly.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC16LF1904-E/P — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC16LF1906-E/P | PIC16LF1907-E/P | PIC16LF1847-I/P |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 40-pin PDIP | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same |
| Program Memory (Flash) | 7 KB | 14 KB | 28 KB | 14 KB |
| Data RAM | 256 B | 512 B | 1 KB | 1 KB |
| Supply Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Maximum CPU Frequency | 20 MHz | 20 MHz | 20 MHz | 32 MHz |
| LCD Driver | Yes (up to 116 segments) | Yes (up to 116 segments) | Yes (up to 116 segments) | Yes (LCD variant) |
| Temperature Grade | -40 C to +125 C (E) | -40 C to +125 C (E) | -40 C to +125 C (E) | -40 C to +85 C (I) |
| Approx. Unit Price (1 pc, USD) | 2.45 | 2.65 | 2.95 | 2.55 |
Principaux différenciateurs
- Integrated LCD driver eliminates external bias components (vs PIC16LF1824-E/P)
- Lowest-cost entry point in PIC16LF1904/6/7 family (vs PIC16LF1906-E/P)
- nanoWatt XLP sleep current below 1 uA (vs PIC16LF1824-E/P)
Notes de conception
Place a 100 nF decoupling capacitor as close as possible to each VDD/VSS pin pair (pins 14/15) of the PIC16LF1904-E/P, plus a single 10 uF bulk capacitor on the VDD rail. Use the device's selectable brown-out reset (BOR) to force a controlled reset when battery voltage drops below the configured threshold; this prevents Flash corruption and erratic LCD behavior at end-of-life battery voltage.
Keep the LCD segment traces short and matched in length within each common/segment pair to minimize ghosting and improve contrast. Route the charge-pump flying capacitor traces (LCD-related) symmetrically and keep them away from high-frequency digital lines to prevent injection of noise into the LCD bias voltage. The ICSP pins (1/40) should be accessible via a 0.1 inch header for in-circuit programming.
Do not leave the MCLR pin floating; tie it to VDD through a 10 kohm resistor or directly drive it with the reset supervisor. When using the internal oscillator, enable the PLL only at supply voltages above 2.7V to avoid out-of-spec operation. Verify that the LCD charge-pump load capacitance matches the selected bias mode (1/2, 1/3, or 1/4) in software configuration to avoid dim or over-driven segments.
Informations de conformité
RoHS and REACH compliance per Microchip product page; Pb-free packaging. Halogen-free status not explicitly stated in verified data. Not AEC-Q100 qualified - not intended for primary automotive safety applications.
