PIC16F19155-I/SP - 8-Bit 32MHz XLP MCU 14KB Flash 28-SPDIP | Microchip
MPN: PIC16F19155-I/SP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.55 | $25.50 |
| 100 | $2.1 | $210.00 |
| 500 | $1.8 | $900.00 |
| 1,000 | $1.55 | $1,550.00 |
PIC16F19155-I/SP Overview
An 8-bit microcontroller (MCU) is a single-chip computer that uses an 8-bit data path and is widely deployed in embedded systems for sensing, control, and human-machine interface tasks. Within the semiconductor hierarchy, MCUs sit under microcontrollers, which are a subclass of embedded processors, which in turn fall under digital ICs and ultimately integrated circuits. The PIC16F19155-I/SP belongs to the XLP (eXtreme Low Power) family, a sub-category of low-power microcontrollers optimized for sleep currents measured in nanoamps and active currents measured in microamps, supporting coin-cell and multi-year battery deployments.
Key features include an integrated 12-bit ADC with computation (ADC2), 5-bit DAC, two 10-bit PWMs, multiple capture/compare/PWM (CCP) modules, and high-current I/O pins capable of directly driving LEDs and LCD segments. The device supports 1.8 V to 5.5 V operation across the full industrial temperature range of -40 °C to +85 °C, and offers the eXtreme Low-Power Sleep mode with currents down to 50 nA typical, plus a power-saving Peripheral Module Disable (PMD) scheme.
Architecturally, the PIC16F19155 uses an enhanced mid-range 8-bit core with a hardware stack and single-cycle instruction execution at 32 MHz (8 MHz instruction rate with 4:1 PLL or direct). The device also includes a Memory Access Partition (MAP) for bootloader protection, Cyclic Redundancy Check (CRC) with memory scan, and Device Information Area (DIA) for serialization. The integrated LCD charge pump supports up to 64 segments at 5 V without external components, simplifying BOM and PCB area.
Typical applications include battery-powered medical devices (glucose meters, thermometers), industrial LCD control panels, IoT sensor nodes with on-glass LCDs, home automation keypads, and consumer appliances. The integrated charge pump and segment drivers allow direct connection to a glass LCD without external bias generation, which is unique in this flash-memory class.
When designing with this device, ensure that decoupling capacitors (typically 100 nF and 10 µF) are placed close to VDD/VSS pins, and that the LCD bias network (if used with external resistive divider) follows Microchip AN658 for charge-pump stability. The PMD registers should be used to gate unused peripherals during sleep for minimum quiescent current.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers and buyers a single reference for design-in and procurement.
Drop-in alternatives for PIC16F19155-I/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 PIC16F19155-I/SP (same form factor and footprint) — differing in ADC, LCD Driver, Package, Comparators, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F19155-E/SP
✅ Drop-In✓ In Stock
$1.02 / Unit
View Datasheet →PIC16F19155-E/SO
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.93 / Unit
View Datasheet →PIC16F19155-E/SS
✅ Drop-In✓ In Stock
$1.18 / Unit
View Datasheet →PIC16F19156-I/SP
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16F18855-I/SP
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16F19155-I/SP Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit enhanced mid-range |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| SRAM | 1 KB |
| EEPROM | 256 Byte |
| Maximum CPU Speed | 32 MHz |
| Operating Voltage | 2.3 V to 5.5 V |
| ADC | 12-bit with Computation (ADC2) |
| DAC | 5-bit |
| LCD Driver | Integrated, up to 64 segments with charge pump |
| PWM | Two 10-bit PWMs plus CCP/ECCP modules |
| I/O Pins | 24 high-current I/O |
| Package | 28-pin SPDIP (Skinny DIP, through-hole) |
| Operating Temperature | -40 °C to +85 °C (industrial) |
| Mounting Type | Through Hole |
| MSL Level | 1 (not moisture-sensitive) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC16F19155-I/SP Pin Configuration
| Pin 1 | MCLR — Master Clear (reset) input, active low |
| Pin 2 | RA0 — Port A bit 0 / analog input / SEG |
| Pin 3 | RA1 — Port A bit 1 / analog input / SEG |
| Pin 4 | RA2 — Port A bit 2 / analog input / SEG |
| Pin 5 | RA3 — Port A bit 3 / analog input / SEG (input only) |
| Pin 6 | RA4 — Port A bit 4 / analog input / SEG |
| Pin 7 | RA5 — Port A bit 5 / analog input / SEG |
| Pin 8 | RE3 — Port E bit 3 / MCLR alternate (input only) |
| Pin 9 | RA7 — Port A bit 7 / analog input / SEG |
| Pin 10 | RA6 — Port A bit 6 / analog input / SEG |
| Pin 11 | RC0 — Port C bit 0 / SEG |
| Pin 12 | RC1 — Port C bit 1 / SEG |
| Pin 13 | RC2 — Port C bit 2 / SEG |
| Pin 14 | RC3 — Port C bit 3 / SEG |
| Pin 15 | RC4 — Port C bit 4 / SEG |
| Pin 16 | RC5 — Port C bit 5 / SEG |
| Pin 17 | RC6 — Port C bit 6 / SEG |
| Pin 18 | RC7 — Port C bit 7 / SEG |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDD — Positive power supply, 2.3 V to 5.5 V |
| Pin 21 | RB0 — Port B bit 0 / SEG / interrupt-on-change |
| Pin 22 | RB1 — Port B bit 1 / SEG / interrupt-on-change |
| Pin 23 | RB2 — Port B bit 2 / SEG / interrupt-on-change |
| Pin 24 | RB3 — Port B bit 3 / SEG / interrupt-on-change |
| Pin 25 | RB4 — Port B bit 4 / SEG / interrupt-on-change |
| Pin 26 | RB5 — Port B bit 5 / SEG / interrupt-on-change |
| Pin 27 | RB6 — Port B bit 6 / SEG / ICSCLK |
| Pin 28 | RB7 — Port B bit 7 / SEG / ICSDAT |
Typical Applications
PIC16F19155-I/SP is suitable for 6 applications: Battery-Powered Glucose Meter, Industrial HVAC Control Panel, Smart Home Thermostat, Wearable Fitness Tracker LCD, IoT Sensor Node with On-Glass LCD, Consumer Appliance Front Panel.
Battery-Powered Glucose Meter
The PIC16F19155-I/SP fits battery-powered glucose meters because its integrated LCD charge pump drives a 32-segment numeric glass-LCD directly from a single CR2032 cell, eliminating the negative bias supply. The 12-bit ADC2 with computation averaging oversamples the electrochemical strip current with hardware accumulation, reducing CPU load to simple threshold reading. XLP Sleep mode at 50 nA extends battery life to multi-year operation, while the 32 MHz core executes the meter firmware and BT/BLE pairing sequence within sub-second response budgets. Place the IC on a 4-layer board with the charge-pump flying capacitor (1 µF X5R) within 5 mm of the VLCD pins.
Recommended
Industrial HVAC Control Panel
The PIC16F19155-I/SP is well matched to industrial HVAC control panels that display setpoint, room temperature, and fan status on a 64-segment custom LCD. The integrated charge pump removes the need for a -5 V bias inverter that conventional LCD drivers require, reducing BOM cost and PCB area. The 24 high-current I/O directly sink LED indicators and relay coils, eliminating external drivers. The 2.3 V to 5.5 V supply range supports 24 VAC rectified-DC rails through a simple LDO, while -40 °C to +85 °C operation covers unconditioned mechanical rooms.
Recommended
Smart Home Thermostat
The PIC16F19155-I/SP serves as the user-interface MCU in a smart home thermostat, driving a 96-segment TN-LCD for temperature and schedule readouts without a separate LCD controller. The 12-bit ADC reads thermistor bridges with 0.1 °C resolution, while the 5-bit DAC generates the control signal for the HVAC contactor. Hardware CIPs (CLC, NCO) implement capacitive touch sensing on glass-front panels without CPU wake-up. XLP Sleep retains the LCD display at 50 nA, so a 2xAA cell can power the thermostat through the entire heating season.
Recommended
Wearable Fitness Tracker LCD
The PIC16F19155-I/SP supports wearable fitness trackers with its on-chip LCD charge pump that maintains display contrast across battery voltage decay from 3.2 V to 2.3 V. The 32 MHz core executes pedometer and heart-rate algorithms within the inter-sample interval, while DMA-fed ADC captures PPG photodiode current without CPU intervention. The 28-SPDIP is reserved here for prototypes; production migration to 28-QFN (PIC16F19155-I/ML) preserves pin function. Sleep current at 50 nA is well below the coin-cell self-discharge rate.
Recommended
IoT Sensor Node with On-Glass LCD
The PIC16F19155-I/SP is appropriate for IoT sensor nodes that display local readings on a custom glass-LCD (e.g., LoRaWAN soil moisture, CO2, or smart-meter nodes). The integrated charge pump eliminates the negative supply that discrete LCD drivers require, simplifying the power tree. The 14 KB Flash holds an LVGL-style custom UI plus an LWM2M client; 1 KB SRAM buffers sensor packets between transmits. XLP Sleep at 50 nA combined with RTCC wake-up gives sub-µA average current for AA-battery deployments spanning 5-10 years.
Recommended
Consumer Appliance Front Panel
The PIC16F19155-I/SP fits consumer appliance front panels (rice cookers, washing machines, microwave ovens) that show mode, time, and error codes on a multi-segment LCD. The 24 high-current I/O drive triac optocouplers and 7-segment LED indicators without external transistors, while the 5-bit DAC generates the buzzer tone for end-of-cycle alerts. Hardware CRC scan detects Flash corruption for functional safety per IEC 60335, and the -40 °C to +85 °C range covers unheated garage and kitchen environments.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F19155-I/SP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F19155-E/SP | PIC16F19155-E/SS | PIC16F19156-I/SP | PIC16F18855-I/SP |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SPDIP | 28-SPDIP - same | 28-SSOP (footprint adapted) | 28-SPDIP - same | 28-SPDIP - same |
| Flash Memory | 14 KB | 14 KB | 14 KB | 28 KB | 14 KB |
| SRAM | 1 KB | 1 KB | 1 KB | 2 KB | 1 KB |
| LCD Charge Pump | Yes (integrated) | Yes (integrated) | Yes (integrated) | Yes (integrated) | No |
| Operating Voltage | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V |
| Temperature Range | -40 °C to +85 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +85 °C | -40 °C to +85 °C |
| Maximum CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| I/O Pins | 24 | 24 | 24 | 24 | 24 |
Key Differentiators
- Integrated LCD charge pump up to 64 segments without negative bias (vs PIC16F18855-I/SP)
- Same-family upgrade path to 28 KB Flash without PCB change (vs PIC16F19156-I/SP)
- 12-bit ADC2 with hardware computation averaging (vs PIC16F18855-I/SP)
Design Notes
Place a 100 nF decoupling capacitor within 3 mm of the VDD pin (pin 20) and a bulk 10 µF capacitor on the same power rail. For the LCD charge pump, add a 1 µF X5R flying capacitor between VLCAP1/VLCAP2 and a 1 µF X5R reservoir on VLCD3 per Microchip AN658. Failure to follow these capacitor placement rules causes display flicker and reduced charge-pump efficiency.
Do not configure the MCLR pin as RA5/RE3 alternate function without disabling the on-chip MCLR in the configuration words - leaving it floating causes spurious resets. The ICD/ICSP pins RB6/RB7 should be reserved for in-circuit programming; do not load them with heavy external capacitance (keep below 50 pF) or programming will fail. When using XLP Sleep, configure the PMD registers to gate unused peripherals before WFI.
Estimated: At 32 MHz full operation from 5 V, the PIC16F19155-I/SP dissipates approximately 30 mW (6 mA active current at 5 V). The 28-SPDIP package has theta_JA of approximately 70 °C/W, yielding a junction temperature rise of 2 °C above ambient - well within the -40 °C to +85 °C rating. No thermal management is required for normal operation in this through-hole package.
Compliance Information
RoHS and lead-free per Microchip product page. Not AEC-Q100 qualified - automotive designs should use PIC16F19155-E/SP and validate to AEC-Q100 requirements. No halogen-free statement on the datasheet header; assumed compliant for tape and reel.
