PIC16LF19156-E/SP - 28KB Flash, 32MHz 8-bit XLP MCU | Microchip
MPN: PIC16LF19156-E/SP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.42 | $3.42 |
| 10 | $3.08 | $30.80 |
| 100 | $2.74 | $274.00 |
| 500 | $2.46 | $1,230.00 |
| 1,000 | $2.21 | $2,210.00 |
PIC16LF19156-E/SP Overview
An 8-bit microcontroller (MCU) is a single-chip computer integrating a CPU, program memory, working RAM, non-volatile data EEPROM, and peripheral interfaces on one silicon die. Within the broader PIC16F family, this device belongs to the PIC16F19156 sub-family that adds Core Independent Peripherals (CIP), an integrated LCD driver with charge pump, and Intelligent Analog. It fits inside the wider taxonomy: 8-bit MCU -> microcontroller -> embedded controller -> semiconductor, and is widely used in low-power human-machine interface designs.
Key features include 12-bit ADC2 with up to 20 channels, 5-bit DAC, low-power comparator (LP COMP), PWM, CCP, CWG (Complementary Waveform Generator), SMT (Signal Measurement Timer), ZCD (Zero-Cross Detect), Peripheral Pin Select (PPS), Real-Time Clock Calendar (RTCC), HLT (Hardware Limit Timer), Windowed Watchdog Timer (WWDT), and Peripheral Module Disable (PMD). The integrated LCD controller supports direct segment drive with an internal charge pump, eliminating external bias generation.
The device uses Microchip's enhanced mid-range 8-bit PIC16 CPU core with a hardware multiplier and a 16-level hardware stack. XLP technology delivers nanoWatt sleep currents suitable for years-of-battery-life applications, while the charge pump and on-chip EEPROM allow data logging without external components.
Typical applications include battery-powered LCD thermostats, industrial sensor transmitters, consumer remote controls, electronic shelf labels, portable medical monitors, and low-power IoT sensor nodes with segmented displays.
When designing with this device, mind the 3.6V VDD maximum of the LF variant and choose a 32.768kHz crystal for RTCC accuracy. Place decoupling capacitors within 5mm of VDD/AVDD pins and reserve dedicated ground traces under the SPDIP for noise immunity.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single source for selection and sourcing decisions.
Drop-in alternatives for PIC16LF19156-E/SP — 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 PIC16LF19156-E/SP (same form factor and footprint) — differing in Package, Operating Temperature, LCD Driver, Comparators, Mounting Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F19156-E/SP
✅ Drop-In✓ In Stock
$1.38 / Unit
View Datasheet →PIC16LF19155-I/SP
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF19155-E/SP
✅ Drop-In✓ In Stock
$0.65 / Unit
View Datasheet →PIC16LF19156-I/SP
✅ Drop-In✓ In Stock
$1.52 / Unit
View Datasheet →PIC16LF19156-E/SO
✅ Drop-In✓ In Stock
$1.18 / Unit
View Datasheet →PIC16LF19155-I/SO
✅ Drop-In✓ In Stock
$1.19 / Unit
View Datasheet →PIC16LF19156-E/SP Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 8-bit enhanced mid-range |
| Program Memory (Flash) | 28 KB (16K x 14 words) |
| Data SRAM | 2 KB (2048 bytes) |
| Data EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz |
| Operating Voltage (LF) | 1.8 V to 3.6 V |
| ADC Resolution | 12-bit (ADC2) up to 20 channels |
| DAC | 5-bit |
| Comparators | Low-power comparator (LP COMP) |
| LCD Driver | Integrated with charge pump |
| Communication | I2C, SPI, dual EUSART |
| PWM / CCP / CWG | Yes |
| RTCC / ZCD / SMT / HLT / WWDT | Yes |
| Peripheral Pin Select (PPS) | Yes |
| Operating Temperature (E suffix) | -40C to +125C |
| Package | 28-pin SPDIP (Skinny Plastic DIP) |
| Mounting Type | Through-Hole |
| RoHS Status | Compliant |
PIC16LF19156-E/SP Pin Configuration
| Pin 1 | VDD — Positive supply voltage (1.8V to 3.6V) |
| Pin 2 | RA5 — Port A bit 5 / analog input |
| Pin 3 | RA4 — Port A bit 4 |
| Pin 4 | RA3 — Port A bit 3 / MCLR (input only) |
| Pin 5 | RC5 — Port C bit 5 |
| Pin 6 | RC4 — Port C bit 4 |
| Pin 7 | RC3 — Port C bit 3 |
| Pin 8 | RC2 — Port C bit 2 |
| Pin 9 | RC1 — Port C bit 1 |
| Pin 10 | RC0 — Port C bit 0 |
| Pin 11 | RB7 — Port B bit 7 |
| Pin 12 | RB6 — Port B bit 6 |
| Pin 13 | RB5 — Port B bit 5 |
| Pin 14 | RB4 — Port B bit 4 |
| Pin 15 | AVDD — Analog supply voltage |
| Pin 16 | AVSS — Analog ground |
| Pin 17 | RA2 — Port A bit 2 |
| Pin 18 | RA1 — Port A bit 1 / DAC output |
| Pin 19 | RA0 — Port A bit 0 |
| Pin 20 | VSS — Digital ground |
| Pin 21 | RA7 — Port A bit 7 / OSC1 |
| Pin 22 | RA6 — Port A bit 6 / OSC2 |
| Pin 23 | RB0 — Port B bit 0 |
| Pin 24 | RB1 — Port B bit 1 |
| Pin 25 | RB2 — Port B bit 2 |
| Pin 26 | RB3 — Port B bit 3 |
| Pin 27 | RC6 — Port C bit 6 |
| Pin 28 | RC7 — Port C bit 7 |
Typical Applications
PIC16LF19156-E/SP is suitable for 6 applications: Battery-Powered LCD Thermostat, Industrial Sensor Transmitter with LCD, Consumer Remote Control with LCD, Electronic Shelf Label, Portable Medical Monitor, Low-Power IoT Sensor Node.
Battery-Powered LCD Thermostat
The PIC16LF19156-E/SP is purpose-built for battery-powered thermostats where years of operation on two AA cells are required. Its 1.8 V-3.6 V LF supply matches directly to a 2xAA battery rail without boost regulation, while the integrated LCD driver with on-chip charge pump eliminates external bias components and the 12-bit ADC2 with 20 channels handles temperature sensing plus user input scanning. At 32 MHz the device finishes control loops well under 1 ms, then drops to XLP sleep drawing microamps between samples.
Recommended
Industrial Sensor Transmitter with LCD
The PIC16LF19156-E/SP suits 4-20 mA loop-powered sensor transmitters that need local LCD readout of process variables. The 12-bit ADC2 captures pressure or flow inputs, the 5-bit DAC drives the loop current, and the integrated LCD driver displays measured values plus diagnostics. Hardware limit timer (HLT) and windowed watchdog (WWDT) provide the safety integrity required in industrial environments while the 28 KB Flash stores calibration tables and linearization curves.
Recommended
Consumer Remote Control with LCD
The PIC16LF19156-E/SP powers universal remote controls that display menus and battery status on segmented LCDs. Its nanoWatt XLP sleep currents extend battery life beyond 5 years, while the Peripheral Pin Select (PPS) maps the IR transmitter and keypad matrix efficiently across available I/O. The 2 KB SRAM supports menu navigation state, and 256 bytes EEPROM stores learned remote codes without external storage.
Recommended
Electronic Shelf Label
Electronic shelf labels (ESLs) for retail need microamp sleep currents and integrated LCD drivers, which the PIC16LF19156-E/SP delivers natively. The LF variant runs directly from a single CR2032 coin cell, while 28 KB Flash accommodates pricing logic and RF protocol stacks. PPS allows flexible pin mapping to the ESL's narrow PCB, and the on-chip charge pump supports the high-V LCD segments without external bias.
Recommended
Portable Medical Monitor
The PIC16LF19156-E/SP is suitable for portable medical devices such as pulse oximeters and glucometers that require accurate battery monitoring, segmented LCD readout, and sensor signal conditioning. The 12-bit ADC2 reads oximetry front-end signals, the 5-bit DAC drives a buzzer or LED indicator, and the RTCC provides timestamped measurements. The LF 3.6 V rating simplifies single-cell Li-ion power trees.
Recommended
Low-Power IoT Sensor Node
Low-power wireless IoT sensor nodes benefit from the PIC16LF19156-E/SP's deep sleep currents and integrated 12-bit ADC2. Sensor readings can be buffered in 2 KB SRAM, processed locally using the 5-bit DAC for threshold-based actuation, and transmitted over SPI to a companion radio such as the MRF24XA or LoRa module. The on-chip charge pump supports solar-powered deployments with LCD status displays.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF19156-E/SP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F19156-E/SP | PIC16LF19155-I/SP | PIC16LF19155-E/SP | PIC16LF19156-I/SP | PIC16LF19156-E/SO | PIC16LF19155-I/SO |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SPDIP-28 (Through-Hole) | SPDIP-28 - same | SPDIP-28 - same | SPDIP-28 - same | SPDIP-28 - same | SOIC-28 (same pinout) | SOIC-28 (same pinout) |
| Program Memory (Flash) | 28 KB | 28 KB | 14 KB | 14 KB | 28 KB | 28 KB | 14 KB |
| Data EEPROM | 256 bytes | 256 bytes | 128 bytes | 128 bytes | 256 bytes | 256 bytes | 128 bytes |
| Operating Voltage | 1.8 V to 3.6 V (LF) | 1.8 V to 5.5 V (F) | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF) |
| Temperature Grade | E grade -40C to +125C | E grade -40C to +125C | I grade -40C to +85C | E grade -40C to +125C | I grade -40C to +85C | E grade -40C to +125C | I grade -40C to +85C |
| ADC2 Channels | Up to 20 channels | Up to 20 channels | Up to 20 channels | Up to 20 channels | Up to 20 channels | Up to 20 channels | Up to 20 channels |
| LCD Driver with Charge Pump | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Communication Interfaces | I2C, SPI, dual EUSART | I2C, SPI, dual EUSART | I2C, SPI, dual EUSART | I2C, SPI, dual EUSART | I2C, SPI, dual EUSART | I2C, SPI, dual EUSART | I2C, SPI, dual EUSART |
Key Differentiators
- 5V-tolerant F variant available for drop-in (vs PIC16F19156-E/SP)
- Doubled Flash and EEPROM vs PIC16LF19155 (vs PIC16LF19155-I/SP)
- Extended temperature range E grade (vs PIC16LF19156-I/SP)
Design Notes
The PIC16LF19156-E/SP LF variant supports 1.8 V to 3.6 V supply only. Place a 10 uF bulk + 100 nF ceramic decoupling capacitor within 5 mm of the VDD/AVDD pins. For battery-powered designs, gate VDD with a low-quiescent LDO such as MCP1700 to extend shelf life. Estimated: with CPU sleep current of ~50 nA at 1.8 V, a CR2032 cell (220 mAh) sustains the device in deep sleep for years.
Use a dedicated ground plane under the SPDIP-28 footprint to maximize ADC2 noise rejection. Route analog signals (sensor inputs to RA0-RA2 and dedicated ADC channels) away from PWM/CCP outputs and digital switching traces. Keep the 32.768 kHz RTCC crystal traces short and symmetric to ground to ensure accurate timekeeping within +/- 20 ppm.
Do not exceed the 3.6 V maximum VDD on the LF variant - this is a common failure mode when reusing 5 V designs. The MCLR pin (RA3) is input-only and cannot drive outputs. When using Peripheral Pin Select (PPS), lock the PPS registers at runtime to prevent unintended remapping during firmware faults. Avoid routing high-frequency signals through RA0-RA2 if they are reserved for DAC1/2 outputs.
Compliance Information
RoHS compliant per Microchip product page. E grade -40C to +125C industrial extended temperature, NOT AEC-Q100 qualified. Use PIC16F19156-E/SPEVAO or automotive-grade Microchip PIC16F19156 variants for AEC-Q100 designs.
