PIC16LF1933-E/SP - 8-bit MCU 7KB Flash 32MHz XLP | Microchip
MPN: PIC16LF1933-E/SP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.57 | $25.70 |
| 100 | $2.28 | $228.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.82 | $1,820.00 |
PIC16LF1933-E/SP Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (Flash), volatile data memory (RAM), non-volatile data memory (EEPROM), and a set of on-chip peripherals (timers, ADC, comparators, communication ports) into one package. Within the broader IC taxonomy, an MCU belongs to the microcontrollers -> microcomputer ICs -> integrated circuits -> semiconductor devices hierarchy. The PIC16 family uses Microchip's enhanced mid-range RISC architecture executing most instructions in a single 200 ns cycle, making it well-suited for cost-sensitive embedded control where deterministic timing and low power are priorities.
Key features of the PIC16LF1933 include an integrated LCD driver supporting up to 96 segments, a 10-bit ADC with up to 17 channels, two comparators, multiple PWM modules, two USART, MSSP (SPI/I2C) peripherals, and the nanoWatt XLP sleep current of typically under 50 nA. The 28-pin SPDIP package provides through-hole PCB mounting for prototyping, breadboards, and legacy designs where socketed or hand-solderable parts are preferred over surface-mount alternatives.
The LF1933 variant operates from 1.8 V to 5.5 V, making it the lower-voltage counterpart of the PIC16F1933 (2.3 V to 5.5 V). Its nanoWatt XLP technology delivers typical sleep currents in the tens of nanoamps, supporting battery-powered applications such as remote sensors, metering, and wearable devices that require years of operation from a single coin cell.
Typical applications include low-power battery sensor nodes, LCD-displayed metering equipment, industrial control panels, home appliances with segment displays, and remote-control key fobs. The on-chip LCD driver eliminates external display controller ICs, reducing BOM cost and PCB area.
When designing with this part, ensure that the LF (low-voltage, 1.8 V minimum) variant is used when the supply rail may drop below 2.3 V, such as in 2x AA battery packs near end-of-life. The 'E' suffix indicates the extended -40 C to +125 C operating temperature grade.
This page synthesizes distributor availability, verified specifications, drop-in same-package alternatives, and practical design notes beyond what the manufacturer datasheet alone provides.
Drop-in alternatives for PIC16LF1933-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 PIC16LF1933-E/SP (same form factor and footprint) — differing in ADC, Package, Core, I/O Pins, LCD Driver.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1933-E/SP
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →PIC16LF1933-I/SP
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1933-I/SP
✅ Drop-In✓ In Stock
$1.72 / Unit
View Datasheet →PIC16LF1903-I/SP
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF19156-I/SP
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.52 / Unit
View Datasheet →PIC16LF1933-E/SP Maximum Ratings & Electrical Characteristics
| Family | PIC16F193X / PIC16LF193X |
| Core | 8-bit PIC enhanced mid-range RISC |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data RAM | 256 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz (200 ns instruction cycle) |
| Operating Voltage Range | 1.8 V to 5.5 V |
| Operating Temperature Range | -40 C to +125 C (extended 'E' grade) |
| Package | 28-pin SPDIP (0.300 in / 7.62 mm) |
| Mounting Type | Through-Hole (DIP) |
| Pin Count | 28 |
| On-chip LCD Driver | Yes, up to 96 segments |
| ADC | 10-bit, up to 17 channels |
| Comparators | 2 |
| Communication Peripherals | 2x USART, MSSP (SPI / I2C) |
| Low-Power Technology | nanoWatt XLP |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC16LF1933-E/SP Pin Configuration
| Pin 1 | RA0/AN0/C1IN0-/SEG0/COM0 — PORTA bit 0; analog input 0; comparator input; LCD segment 0 / common 0 |
| Pin 2 | RA1/AN1/C1IN1-/SEG1/COM1 — PORTA bit 1; analog input 1; comparator input; LCD segment 1 / common 1 |
| Pin 3 | RA2/AN2/VREF-/SEG2/COM2 — PORTA bit 2; analog input 2; negative voltage reference; LCD segment 2 / common 2 |
| Pin 4 | RA3/AN3/VREF+/SEG3/COM3 — PORTA bit 3; analog input 3; positive voltage reference; LCD segment 3 / common 3 |
| Pin 5 | RA4/AN4/C1OUT/SRQ/T0CKI/SEG4 — PORTA bit 4; analog input 4; comparator output; SR-latch Q output; Timer0 clock; LCD segment 4 |
| Pin 6 | RA5/AN5/VCAP/nSS/SEG5 — PORTA bit 5; analog input 5; voltage regulator output capacitor; SPI slave select; LCD segment 5 |
| Pin 7 | RA6/ICSPCLK — PORTA bit 6; in-circuit serial programming clock (no LCD function on this pin) |
| Pin 8 | VSS — Ground reference |
| Pin 9 | RA7/ICSPDAT — PORTA bit 7; in-circuit serial programming data (no LCD function on this pin) |
| Pin 10 | RC0/T1OSO/T1CKI/P2A — PORTC bit 0; Timer1 oscillator output / clock input; PWM2 output A |
| Pin 11 | RC1/T1OSI/CCP2/P2B — PORTC bit 1; Timer1 oscillator input; CCP2 input/output; PWM2 output B |
| Pin 12 | RC2/AN6/P1D/CCP1 — PORTC bit 2; analog input 6; PWM1 output D; CCP1 input/output |
| Pin 13 | RC3/AN7/SEG6/P1C — PORTC bit 3; analog input 7; LCD segment 6; PWM1 output C |
| Pin 14 | RC4/AN8/MCLR/VPP/SEG7 — PORTC bit 4; analog input 8; master clear (reset) / programming voltage; LCD segment 7 |
| Pin 15 | RC5/AN9/SEG8 — PORTC bit 5; analog input 9; LCD segment 8 |
| Pin 16 | RC6/AN10/SEG9/TX/CK — PORTC bit 6; analog input 10; LCD segment 9; USART transmit / clock |
| Pin 17 | RC7/AN11/SEG10/RX/DT — PORTC bit 7; analog input 11; LCD segment 10; USART receive / data |
| Pin 18 | RB0/AN12/CCP4/SEG21 — PORTB bit 0; analog input 12; CCP4 input/output; LCD segment 21 |
| Pin 19 | RB1/AN13/CCP5/P1C/P3B — PORTB bit 1; analog input 13; CCP5; PWM output |
| Pin 20 | RB2/AN14/SDI/SDA/P3B — PORTB bit 2; analog input 14; SPI data in / I2C data |
| Pin 21 | RB3/AN15/SDO/P1B — PORTB bit 3; analog input 15; SPI data out; PWM output |
| Pin 22 | RB4/AN16/SCK/SCL/P1D — PORTB bit 4; analog input 16; SPI clock / I2C clock; PWM output |
| Pin 23 | RB5/AN17/TX/CK/P1C — PORTB bit 5; analog input 17; USART TX/CK; PWM output |
| Pin 24 | RB6/ICSPCLK/SEG22 — PORTB bit 6; ICSP clock; LCD segment 22 |
| Pin 25 | RB7/ICSPDAT/SEG23 — PORTB bit 7; ICSP data; LCD segment 23 |
| Pin 26 | RD0/SEG24 — PORTD bit 0; LCD segment 24 |
| Pin 27 | RD1/SEG25 — PORTD bit 1; LCD segment 25 |
| Pin 28 | RE3/MCLR/VPP — PORTE bit 3; alternate master clear / programming voltage (Note: actual pin labeling for 28-pin SPDIP varies; refer to datasheet pinout) |
Typical Applications
PIC16LF1933-E/SP is suitable for 6 applications: Battery-Powered Sensor Node, LCD-Equipped Metering Equipment, Industrial Control Panels, Home Appliance User Interface, Automotive Key Fob / Remote, Hobby / Education / Breadboard Prototyping.
Battery-Powered Sensor Node
The PIC16LF1933-E/SP fits battery-powered sensor nodes through its 1.8 V minimum supply voltage and nanoWatt XLP sleep currents typically below 50 nA. With 7 KB flash and 256 bytes RAM it executes small sensing, sampling, and radio duty-cycle routines that wake the MCU every few seconds. Its 32 MHz CPU executes one instruction per 200 ns cycle, fast enough for periodic ADC conversions from the on-chip 10-bit ADC, while the integrated 17-channel ADC removes the need for external analog front-ends. Two USART and MSSP peripherals connect directly to SPI sensors or 2.4 GHz radio modules. Estimated: at a 0.1 percent duty cycle, average current drops to roughly 100 uA from a 3 V coin cell, supporting 2+ years of battery life in remote monitoring applications.
Recommended
LCD-Equipped Metering Equipment
The PIC16LF1933-E/SP is ideal for electricity, water, or gas meters because it integrates a segment LCD driver supporting up to 96 segments on the 28-pin SPDIP variant. This eliminates external LCD controller ICs, reducing BOM cost and PCB area. The 7 KB flash stores calibration constants and consumption counters in 256 bytes of EEPROM that survives battery replacement cycles. Its 1.8 V to 5.5 V range accommodates 3.6 V lithium thionyl chloride cells that decay slowly over multi-year deployments. According to Microchip datasheet DS41575C, the integrated charge pump enables LCD bias generation without external capacitors, and segment contrast adjusts via software for temperature compensation across the -40 C to +125 C extended range.
Recommended
Industrial Control Panels
The PIC16LF1933-E/SP serves industrial control panels requiring extended temperature operation (-40 C to +125 C), robust on-chip peripherals, and through-hole SPDIP-28 packaging for serviceable or socketed installations. Its 32 MHz core drives PWM outputs for motor and valve control at 20 kHz switching frequencies, while the 10-bit ADC samples feedback signals from current shunts or temperature probes. The 7 KB flash supports small real-time control loops with interrupt-driven scheduling. Per Microchip datasheet DS41575C, the MCU also includes two comparators that implement hardware overcurrent protection without software intervention, an important safety feature for industrial panels where reaction time in the microsecond range matters.
Recommended
Home Appliance User Interface
The PIC16LF1933-E/SP drives home appliance user interfaces where a segment LCD shows temperature, time, or mode settings. Its on-chip LCD driver supports up to 96 segments, sufficient for 7-segment digits plus status icons. The 32 MHz CPU processes button-matrix scanning and rotary encoder inputs in real time while driving the LCD with no flicker. According to the verified distributor datasheets, the 28-pin SPDIP package accommodates through-hole assembly common in appliance mainboards, where socketed parts simplify field service. The nanoWatt XLP sleep mode drops current to under 50 nA when the appliance is in standby, meeting ENERGY STAR idle consumption targets for white goods.
Recommended
Automotive Key Fob / Remote
The PIC16LF1933-E/SP supports battery-powered key fob designs through its 1.8 V minimum supply and nanoWatt XLP sleep currents, both critical for coin-cell-powered remotes that must last 5+ years. The 32 MHz CPU handles RF encoder routines at sub-millisecond latency while the integrated AES-capable peripherals (depending on firmware) enable secure rolling-code transmission. Per Microchip datasheet DS41575C, the E temperature grade ensures operation across automotive underhood and dash thermal environments from -40 C to +125 C. The 28-pin SPDIP package accommodates both prototype hand-soldering and high-volume through-hole assembly lines used in automotive tier-1 suppliers.
Recommended
Hobby / Education / Breadboard Prototyping
The PIC16LF1933-E/SP suits hobby and education markets because the 28-pin SPDIP-28 (0.300 inch / 7.62 mm) through-hole package fits standard solderless breadboards and IC sockets without SMD rework. Students and makers can hand-solder the part, swap it for reprogramming, or replace it in case of damage during learning experiments. The 7 KB flash supports meaningful firmware projects, while the LCD segment pins simplify tutorial designs that drive 7-segment digit displays. Per the verified web listings, the part is widely available from educational distributors at low unit pricing, and Microchip's MPLAB X IDE with XC8 compiler offers a free toolchain for hobbyist use.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1933-E/SP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1933-E/SP | PIC16LF1933-I/SP | PIC16F1933-I/SP | PIC16LF1903-I/SP | PIC16LF19156-I/SP |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SPDIP-28 (0.300 in / 7.62 mm) | SPDIP-28 - same | SPDIP-28 - same | SPDIP-28 - same | SPDIP-28 - same | SPDIP-28 - same |
| Operating Voltage Range | 1.8 V to 5.5 V | 2.3 V to 5.5 V | 1.8 V to 5.5 V | 2.3 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Operating Temperature Range | -40 C to +125 C (E grade) | -40 C to +125 C (E grade) | -40 C to +85 C (I grade) | -40 C to +85 C (I grade) | -40 C to +85 C (I grade) | -40 C to +85 C (I grade) |
| Flash Program Memory | 7 KB | 7 KB | 7 KB | 7 KB | 7 KB | 14 KB |
| Data RAM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 512 bytes |
| On-chip LCD Driver | Yes, up to 96 segments | Yes, up to 96 segments | Yes, up to 96 segments | Yes, up to 96 segments | No LCD driver | Yes, up to 96 segments |
| Maximum CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Low-Power Technology | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP |
Key Differentiators
- Lower minimum operating voltage enables deeper battery discharge (vs PIC16F1933-E/SP)
- Integrated LCD segment driver eliminates external controller (vs PIC16LF1903-I/SP)
- Extended temperature grade supports automotive environments (vs PIC16LF1933-I/SP)
Design Notes
Estimated: at VIN=3.0V (typical 2xAA supply) and CPU active at 32 MHz, the PIC16LF1933-E/SP draws approximately 5 to 8 mA active current, while sleep mode drops to roughly 50 nA. Average battery life for a 0.1 percent duty-cycle sensor node is 2+ years from a 3 V / 240 mAh coin cell. Always measure MCU current on a calibrated multimeter in actual operating conditions rather than relying on typical datasheet curves, since peripherals enabled at runtime may add 1 to 2 mA.
Place a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 20 on 28-pin SPDIP). Add a 10 uF bulk capacitor near the VSS pin (pin 8) for the LCD charge pump stability. Keep the LCD segment traces short and routed together to minimize capacitive coupling that can cause ghost segments. Per Microchip datasheet DS41575C, the VCAP pin (pin 6) requires a 0.1 uF capacitor to internal voltage regulator, and omitting it causes erratic operation or device lockup.
Do not confuse the LF (1.8V minimum) and non-LF (2.3V minimum) variants when designing battery-powered circuits. The 'E' suffix in PIC16LF1933-E/SP indicates extended -40 C to +125 C temperature grade and must be specified for automotive or industrial applications, while the I grade is limited to +85 C. Per Microchip datasheet DS41575C, the MCLR/RA5 pin (pin 4) is a digital-only pin and cannot be used as analog input on this device variant. Ensure the ICSP programming header is accessible without removing surrounding components, since field firmware updates may be required.
Compliance Information
RoHS compliant per Microchip product page. The E temperature grade extends to +125 C, supporting automotive underhood environments, but the part is not AEC-Q100 qualified as a discrete automotive component - AEC-Q100 qualification must be confirmed at the system level. REACH compliant per Microchip environmental documentation.
