PIC16F19156-E/SP - 8-bit 32MHz XLP MCU 28KB Flash 28-SPDIP | Microchip
MPN: PIC16F19156-E/SP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.3 | $2.30 |
| 10 | $2.07 | $20.70 |
| 100 | $1.78 | $178.00 |
| 500 | $1.55 | $775.00 |
| 1,000 | $1.38 | $1,380.00 |
PIC16F19156-E/SP Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and a configurable set of peripherals (ADCs, timers, communication blocks, I/O). The PIC16F19156 family sits in the 8-bit PIC16 hierarchy under the broader PIC microcontroller taxonomy within Microchip's product tree. XLP variants are engineered for ultra-low-power battery applications, often using nanoWatt XLP technology to extend idle-current endurance.
Key features include integrated segmented LCD drive (up to 116 segments), a 12-bit ADC2 with computation, a 5-bit DAC, low-power comparator, Zero-Cross Detect (ZCD), Complementary Waveform Generator (CWG), SMT (Signal Measurement Timer), RTCC, Hardware Limit Timer (HLT), Windowed WWDT, PWM, CCP, Peripheral Pin Select (PPS) and Power-Managed modes. The high-current I/O pins can directly drive LCD backplanes or external power components.
Typical applications cover battery-powered LCD consumer devices, industrial automation HMIs, low-cost instrumentation, and consumer appliances. An integrated charge pump and XLP sleep currents in the nano-ampere class make the part especially suited to mains-free product categories where long battery life and a built-in display matter more than raw CPU throughput.
When designing with this device, ensure the configured system clock stays within the 2.5V-5.5V VDD range for full 32 MHz operation; below 2.5V the maximum fOSC derates. Decouple VDD with a 100 nF ceramic close to each power pin and place the ICD 3/4 or PICkit programmer footprint so firmware can be updated without board rework.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes that go beyond what the manufacturer datasheet alone provides for the PIC16F19156-E/SP.
Drop-in alternatives for PIC16F19156-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 PIC16F19156-E/SP (same form factor and footprint) — differing in Package, ADC, Mounting Type, Core Architecture, LCD Driver.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F19155-E/SP
✅ Drop-In✓ In Stock
$1.02 / Unit
View Datasheet →PIC16F19155-I/SP
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →PIC16F18876-E/P
✅ Drop-In✓ In Stock
$2.04 / Unit
View Datasheet →PIC16F18875-E/P
✅ Drop-In✓ In Stock
$1.74 / Unit
View Datasheet →PIC16F18456-I/SP
✅ Drop-In✓ In Stock
$1.07 / Unit
View Datasheet →PIC16F19156-E/SP Maximum Ratings & Electrical Characteristics
| Core | PIC16 8-bit RISC |
| Program Memory (Flash) | 28 KB (16K x 14 words) |
| SRAM | 2 KB |
| EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz |
| Operating Voltage (VDD) | 2.5 V to 5.5 V |
| Operating Temperature | -40C to +125C (Extended, "E") |
| Package | 28-pin SPDIP (Skinny Plastic DIP) |
| LCD Driver | Integrated segmented LCD, up to 116 segments |
| ADC | 12-bit ADC2 with computation |
| DAC | 5-bit DAC |
| Comparators | Low-power comparators with selectable references |
| Timers | PWM, CCP, CWG, SMT, RTCC, HLT, WWDT |
| Peripheral Pin Select (PPS) | Yes |
| Zero-Cross Detect (ZCD) | Yes |
| Charge Pump | Integrated (LCD bias generation) |
| XLP (eXtreme Low-Power) | Yes, nanoWatt XLP technology |
| High-Current I/O | Yes (source/sink capable) |
| Programming/Debug | ICSP via ICD 3/4 or PICkit |
| RoHS Status | Compliant |
PIC16F19156-E/SP Pin Configuration
| Pin 1 | RA5 — Bidirectional I/O / ICSPCLK |
| Pin 2 | RA4 — Bidirectional I/O |
| Pin 3 | RA3 — Bidirectional I/O / MCLR |
| Pin 4 | RA2 — Bidirectional I/O |
| Pin 5 | RA1 — Bidirectional I/O / ICSPDAT |
| Pin 6 | RA0 — Bidirectional I/O |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RA7 — Bidirectional I/O / LCD segment |
| Pin 9 | RA6 — Bidirectional I/O / LCD segment |
| Pin 10 | RC0 — Bidirectional I/O / LCD segment |
| Pin 11 | RC1 — Bidirectional I/O / LCD segment |
| Pin 12 | RC2 — Bidirectional I/O / LCD segment |
| Pin 13 | RC3 — Bidirectional I/O / LCD segment |
| Pin 14 | RC4 — Bidirectional I/O / LCD segment |
| Pin 15 | RC5 — Bidirectional I/O / LCD segment |
| Pin 16 | RC6 — Bidirectional I/O / LCD segment |
| Pin 17 | RC7 — Bidirectional I/O / LCD segment |
| Pin 18 | VSS — Ground reference (second) |
| Pin 19 | VDD — Positive supply (2.5V-5.5V) |
| Pin 20 | RB0 — Bidirectional I/O / LCD segment |
| Pin 21 | RB1 — Bidirectional I/O / LCD segment |
| Pin 22 | RB2 — Bidirectional I/O / LCD segment |
| Pin 23 | RB3 — Bidirectional I/O / LCD segment |
| Pin 24 | RB4 — Bidirectional I/O / LCD segment |
| Pin 25 | RB5 — Bidirectional I/O / LCD segment |
| Pin 26 | RB6 — Bidirectional I/O / ICD PGC |
| Pin 27 | RB7 — Bidirectional I/O / ICD PGD |
| Pin 28 | VDD — Positive supply (second) |
Typical Applications
PIC16F19156-E/SP is suitable for 6 applications: Battery-Powered LCD Meter, Industrial HMI / Thermostat, Consumer Appliance Control, Portable Medical / Wellness Monitor, IoT Sensor Edge Node, Automotive Accessory (Non-Safety).
Battery-Powered LCD Meter
The PIC16F19156-E/SP fits battery-powered LCD metering because it integrates both a segmented LCD driver (up to 116 segments) and an on-chip charge pump, removing the need for an external LCD bias generator. With 28 KB of Flash the device holds a meter application plus RTCC-based timekeeping plus 256 bytes of EEPROM for tariffs and calibration constants. nanoWatt XLP sleep currents extend coin-cell life; the 32 MHz core keeps ADC2 sample loops fast enough for power-quality measurements on CT-based front ends.
Recommended
Industrial HMI / Thermostat
The PIC16F19156-E/SP serves industrial thermostats and HMIs where a segmented LCD plus tactile buttons replace more expensive TFT panels. The 12-bit ADC2 with computation oversamples temperature sensors directly, the CWG block drives TRIAC/zero-cross switching, and ZCD synchronises with the mains cycle for low-RFI dimming. PPS remaps digital functions to spare I/O so PCB layout stays clean even with mixed button/LED/LCD signals. XLP sleep extends battery-backed operation after mains loss.
Recommended
Consumer Appliance Control
For washing machines, dishwashers, microwave ovens, and rice cookers, the PIC16F19156-E/SP provides enough Flash for menu-driven state machines and the LCD driver eliminates an external display ASIC. The high-current I/O pins can sink LED backlights directly, while SMT and CCP measure motor RPM and PWM outputs. ZCD and CWG support AC-line dimming and synchronous rectification. The extended -40C to +125C grade covers appliance thermal environments without special screening.
Recommended
Portable Medical / Wellness Monitor
The PIC16F19156-E/SP suits portable medical and wellness devices that pair a segmented LCD with low-power sensors such as temperature, pulse-oximeter front ends, and load-cell scales. The 12-bit ADC2 plus 5-bit DAC and low-power comparator form a complete analog front end in silicon, reducing BOM cost. XLP idle lets a small Li-ion cell run weeks between charges. The extended temperature grade and stable EEPROM storage support clinical logging requirements within IEC 61010 consumer-safety envelopes.
Recommended
IoT Sensor Edge Node
In IoT edge nodes that need a local LCD status display alongside sensor sampling, the PIC16F19156-E/SP combines Cortex-class 8-bit compute with on-chip LCD plus CIPs. SMT measures pulse widths from ultrasonic or flow sensors; CCP captures encoder feedback; RTCC schedules sleep/wake cycles; HLT and WWDT provide hardware-managed safety timers. PPS keeps I/O remappable so adding a wireless module does not require a redesign. XLP nanoWatt sleep enables multi-year battery life on coin cells.
Recommended
Automotive Accessory (Non-Safety)
For non-safety automotive accessories such as tire-pressure checkers, garage-door openers, interior LED drivers, and aftermarket gauges, the PIC16F19156-E/SP supplies the integrated LCD plus analog and CIP blocks. The 12-bit ADC2 and CWG simplify motor and dimmer control loops, and the extended -40C to +125C temperature grade handles cabin and engine-bay environments. Designers needing full AEC-Q100 should migrate to PIC16F19156-E/SP-Q1; the standard -E/SP is typically used for non-safety accessory modules.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F19156-E/SP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F19155-E/SP | PIC16F19155-I/SP | PIC16F18876-E/P | PIC16F18875-E/P | PIC16F18456-I/SP |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SPDIP | 28-SPDIP - same | 28-SPDIP - same | 28-PDIP - same | 28-PDIP - same | 28-SPDIP - same |
| Flash | 28 KB | 14 KB | 14 KB | 28 KB | 14 KB | 14 KB |
| SRAM | 2 KB | 1 KB | 1 KB | 2 KB | 1 KB | 1 KB |
| Max CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Voltage | 2.5V-5.5V | 2.5V-5.5V | 2.5V-5.5V | 2.3V-5.5V | 2.3V-5.5V | 2.3V-5.5V |
| Integrated LCD Charge Pump | Yes | Yes | Yes | No (older family) | No | No |
| Temperature Grade | Extended -40C to +125C | Extended -40C to +125C | Industrial -40C to +85C | Extended -40C to +125C | Extended -40C to +125C | Industrial -40C to +85C |
Key Differentiators
- Integrated LCD charge pump eliminates external bias network (vs PIC16F18876-E/P)
- Largest Flash in 28-SPDIP XLP family (vs PIC16F19155-E/SP)
- Extended -40C to +125C temperature grade for appliance/automotive (vs PIC16F19155-I/SP)
Design Notes
Decouple each VDD pin (pins 19 and 28 on 28-SPDIP) with a 100 nF X7R ceramic placed within 5 mm of the package. Add a bulk 10 uF tantalum or aluminum-polymer cap near the regulator output for LCD-segment switching transients. Place a ferrite bead or small inductor on the VDD trace if the board shares a noisy rail with motors or relays; the PIC16F19156-E/SP noise immunity improves measurably when analog and digital rails are decoupled separately. Estimated: total bulk decoupling ~ 10 uF per rail, sized for worst-case LCD-segment inrush.
Do not exceed 5.5 V on any pin - the PIC16F19156-E/SP is not 5V-tolerant on analog inputs when VDD is below 5V. Always configure the PPS registers before enabling peripherals, and disable unused peripherals via PMD (Peripheral Module Disable) to lower quiescent current. Watch for accidental MCLR enable in code; if MCLR is disabled, provide an external reset supervisor or RC. Finally, keep firmware under 28 KB Flash - the linker will error if it exceeds.
Route the LCD segment traces with the COM (backplane) signals in a tree-style trunk to equalize capacitance on each segment - mismatched segment loading produces visible ghosting. Keep analog inputs (ADC2, comparators) short and away from PWM outputs and switching nodes. Reserve a 5-pin ICSP header footprint (VDD, VSS, MCLR, PGC, PGD) even on production boards so firmware updates are possible without rework. Estimated: minimum trace-to-trace clearance 0.2 mm for 5V industrial assemblies.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified as standard; for AEC-Q100 automotive, request the PIC16F19156-E/SP-Q1 suffix part.
