PIC18F2515-E/SO - 8-bit MCU, 48KB Flash, 25 I/O, 28-SOIC | Microchip
MPN: PIC18F2515-E/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.62 | $6.62 |
| 10 | $5.95 | $59.50 |
| 100 | $5.04 | $504.00 |
| 500 | $4.2 | $2,100.00 |
| 1,000 | $3.55 | $3,550.00 |
PIC18F2515-E/SO Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, and configurable peripherals on one die, intended to be embedded into a larger electronic system rather than operated as a standalone computer. PIC18F devices sit in Microchip's PIC18 family of 8-bit Harvard-architecture RISC MCUs, which evolved from the original PIC16 family by adding a 16-bit instruction word, extended instruction set, larger linear memory, and richer peripherals. Within the broader taxonomy, the PIC18F2515 belongs to: microcontroller -> embedded controller -> 8-bit MCU -> PIC18F family -> PIC18F2x15 sub-family -> PIC18F2515 variant, addressing applications that need moderate Flash, multiple communication interfaces, and robust ADC performance.
Key features of the PIC18F2515-E/SO include 48 KB of self-programmable Flash (In-Circuit Serial Programming, ICSP), 256 bytes of EEPROM, 10 channels of 10-bit ADC, an Enhanced Capture/Compare/PWM (ECCP) module, two Enhanced USART modules, one Master SSP supporting SPI and I2C (master/slave), a 10-bit ADC with up to 100 Ksps conversion rate, and nanoWatt Technology with multiple Idle and Sleep modes. The part provides programmable Brown-out Reset (BOR), Low-Voltage Detect (HLVD), Power-on Reset (POR), and a Watchdog Timer (WDT) for safety-critical embedded designs.
Architecturally, the PIC18F2515 uses an enhanced Harvard core with separate code and data buses, an 8-bit ALU extended to 16-bit operations through the W register, a hardware multiplier (8 x 8 -> single-cycle 16-bit result), and a 32-level hardware stack. The Flash program memory is divided into 16 KB + 16 KB + 16 KB blocks for write/erase flexibility, and the ICSP interface plus two-wire ICSP debug port enable in-circuit programming and debugging with the MPLAB PICkit 5 or ICD tools.
Typical applications include industrial control panels, HVAC and appliance control, automotive body electronics clusters, sensor signal-conditioning front ends, low-power remote sensor nodes, and small embedded user interfaces. Its mix of 25 I/O lines, ADC, PWM, and dual-USART also makes it a fit for stepper-motor drivers and simple HMI boards.
When designing with this part, ensure VDD decoupling uses 100 nF + 10 µF caps close to the pins, that the MCLR pin is pulled high through a 10 kΩ resistor with optional ESD diode, and that the ICSP/ICD connections are routed with stubs under 1 inch to maintain reliable in-circuit programming.
Drop-in alternatives for PIC18F2515-E/SO — 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 PIC18F2515-E/SO (same form factor and footprint) — differing in Package, EEPROM, Operating Temperature, Program Memory (Flash), ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F2515-I/SO
✅ Drop-In✓ In Stock
$4.32 / Unit
View Datasheet →PIC18F2510-E/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F2610-E/SO
✅ Drop-In✓ In Stock
$4.61 / Unit
View Datasheet →PIC18F2515T-I/SO
✅ Drop-In✓ In Stock
$4.45 / Unit
View Datasheet →PIC18F2515-E/SO Maximum Ratings & Electrical Characteristics
| Product Family | PIC18F |
| Core Architecture | 8-bit PIC RISC (Enhanced Harvard) |
| Program Memory (Flash) | 48 KB |
| RAM | 3968 bytes |
| EEPROM | 256 bytes |
| Maximum CPU Speed | 40 MHz (10 MIPS) |
| Supply Voltage (VDD) | 4.2 V to 5.5 V |
| I/O Pins | 25 |
| ADC Channels | 10 channels, 10-bit |
| PWM / CCP | 1x ECCP, 1x CCP |
| Communication Interfaces | 2x Enhanced USART, 1x MSSP (SPI / I2C) |
| Operating Temperature | -40 °C to +125 °C (E = extended) |
| Package | 28-pin SOIC (SO), wide-body, tube |
| Mounting Type | Surface Mount |
| MSL Level | 1 (unlimited) |
| RoHS Status | Compliant |
| Lead-Free / Pb-Free | Yes |
| Watchdog Timer / BOR / HLVD / POR | Yes |
| In-Circuit Programming | ICSP + ICD (2-wire) |
PIC18F2515-E/SO Pin Configuration
| Pin 1 | MCLR/RE3 — Master Clear (active low) / digital input RE3 |
| Pin 2 | RA0/AN0 — PORTA bit 0 / analog input AN0 |
| Pin 3 | RA1/AN1 — PORTA bit 1 / analog input AN1 |
| Pin 4 | RA2/AN2/VREF- — PORTA bit 2 / analog input AN2 / ADC VREF- |
| Pin 5 | RA3/AN3/VREF+ — PORTA bit 3 / analog input AN3 / ADC VREF+ |
| Pin 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Pin 7 | RA5/AN4/SS — PORTA bit 5 / analog input AN4 / SSP slave select |
| Pin 8 | GND — Ground reference |
| Pin 9 | OSC1/RA7 — Crystal oscillator input / PORTA bit 7 |
| Pin 10 | OSC2/RA6 — Crystal oscillator output / PORTA bit 6 |
| Pin 11 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Pin 12 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 I/O |
| Pin 13 | RC2/CCP1 — PORTC bit 2 / ECCP1 I/O |
| Pin 14 | RC3/SCK/SCL — PORTC bit 3 / MSSP SPI clock / I2C clock |
| Pin 15 | RC4/SDI/SDA — PORTC bit 4 / MSSP SPI data in / I2C data |
| Pin 16 | RC5/SDO — PORTC bit 5 / MSSP SPI data out |
| Pin 17 | RC6/TX/CK — PORTC bit 6 / Enhanced USART TX / clock |
| Pin 18 | RC7/RX/DT — PORTC bit 7 / Enhanced USART RX / data |
| Pin 19 | GND — Ground reference |
| Pin 20 | VDD — Positive supply 4.2 V to 5.5 V |
| Pin 21 | RB0/INT0 — PORTB bit 0 / external interrupt 0 |
| Pin 22 | RB1/INT1 — PORTB bit 1 / external interrupt 1 |
| Pin 23 | RB2/INT2 — PORTB bit 2 / external interrupt 2 |
| Pin 24 | RB3/CCP2 — PORTB bit 3 / CCP2 I/O |
| Pin 25 | RB4 — PORTB bit 4 (interrupt-on-change capable) |
| Pin 26 | RB5/PGM — PORTB bit 5 / ICSP programming input |
| Pin 27 | RB6/PGC — PORTB bit 6 / ICSP clock (PGC) |
| Pin 28 | RB7/PGD — PORTB bit 7 / ICSP data (PGD) |
Typical Applications
PIC18F2515-E/SO is suitable for 6 applications: Industrial Control Panels, HVAC and Appliance Control, Automotive Body Electronics, Sensor Signal-Conditioning Front Ends, Stepper-Motor and Small DC-Driver Boards, Low-Power Remote Sensor Nodes.
Industrial Control Panels
The PIC18F2515-E/SO fits industrial control panels because its -40 °C to +125 °C extended temperature grade tolerates unheated cabinet environments, while the 25 I/O pins drive relays, indicator LEDs, keypads, and 7-segment displays in parallel. Its 48 KB Flash comfortably holds a full state-machine ladder-logic interpreter plus a Modbus RTU stack on the dual Enhanced USART, and the 10-bit ADC reads thermistor / 4–20 mA sensor inputs. nanoWatt Idle/Sleep modes drop consumption during field-serviceable idle states.
Recommended
HVAC and Appliance Control
The PIC18F2515-E/SO suits HVAC and appliance control boards where the ECCP module drives a triac-based variable-speed fan or compressor, the 10-bit ADC reads NTC temperature and pressure transducers, and the MSSP/I2C bus controls a small EEPROM and an LCD character display. With 48 KB Flash, designers can host PID control loops plus a multi-page UI without external program memory, and the extended temperature range survives under-hood heat soak. The internal WDT and HLVD meet IEC 60335 software-controlled appliance safety guidance.
Recommended
Automotive Body Electronics
The PIC18F2515-E/SO is appropriate for non-safety automotive body modules such as lighting controllers, door modules, seat controllers, and HVAC flaps because its -40 °C to +125 °C extended grade exceeds the AEC-Q100 Grade 1 thermal envelope. The 25 I/O lines drive H-bridges, LED current sinks, and switch inputs, while the ECCP/CCP channels generate PWM for motor control and the Enhanced USARTs interface with LIN or K-Line transceivers. The programmable Brown-out Reset guards against crank-cold VDD dips typical in 12 V automotive rails.
Recommended
Sensor Signal-Conditioning Front Ends
The PIC18F2515-E/SO works well as a sensor front end because its 10-channel 10-bit ADC samples thermistor bridges, strain gauges, or photodiode arrays at up to ~100 Ksps aggregate, and the Enhanced USART streams the conditioned data over RS-485 or RS-232 to a host controller. The 48 KB Flash holds calibration coefficients and linearization tables, while the 256-byte EEPROM stores per-unit calibration constants that survive power cycles. nanoWatt Idle keeps idle-channel power under 1 µA in battery-powered sensor nodes.
Recommended
Stepper-Motor and Small DC-Driver Boards
For stepper or brushed DC motor drives, the PIC18F2515-E/SO generates step/direction pulses on CCP/ECCP PWM channels, reads current sense on the 10-bit ADC, and runs an indexer or trapezoidal commutation loop entirely from Flash. Its 25 I/O pins manage dual H-bridges, end-stop inputs, and opto-isolated enable lines, while the MSSP SPI channel drives an external stepper-driver ASIC or DAC. The 3968-byte RAM is ample for 16-bit microstep sine tables and a small command queue.
Recommended
Low-Power Remote Sensor Nodes
The PIC18F2515-E/SO supports low-power remote sensor nodes by combining the 10-bit ADC for periodic environmental sampling, Enhanced USART for low-duty-cycle LoRa/sub-GHz radio wake-up, MSSP/I2C for a small sensor breakout, and nanoWatt Technology that drops quiescent current below 1 µA in Sleep mode. The 48 KB Flash stores multi-protocol comms stacks and over-the-air update logic, and the 256-byte EEPROM stores node configuration that survives deep-sleep power cycles. The extended temperature grade ensures outdoor deployment reliability.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F2515-E/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F2515-I/SO | PIC18F2510-E/SO | PIC18F2610-E/SO | PIC18F2515T-I/SO |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC (SO) | 28-SOIC (SO) - same | 28-SOIC (SO) - same | 28-SOIC (SO) - same | 28-SOIC (SO) - same |
| Flash Memory | 48 KB | 48 KB | 32 KB | 64 KB | 48 KB |
| RAM | 3968 bytes | 3968 bytes | 1536 bytes | 3968 bytes | 3968 bytes |
| EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Temperature Grade | -40C to +125C (E) | -40C to +85C (I) | -40C to +125C (E) | -40C to +125C (E) | -40C to +85C (I) |
| I/O Pins | 25 | 25 | 25 | 25 | 25 |
| ADC | 10 ch x 10-bit | 10 ch x 10-bit | 10 ch x 10-bit | 10 ch x 10-bit | 10 ch x 10-bit |
Key Differentiators
- Extended -40C to +125C operating temperature grade (vs PIC18F2515-I/SO)
- Higher Flash and RAM headroom than PIC18F2510 (vs PIC18F2510-E/SO)
- Lower-power Sleep and Idle than DSPIC alternatives (vs DSPIC33FJ16GP101-E/SS)
Design Notes
Power the PIC18F2515-E/SO from VDD (pin 20) with both a 100 nF and a 10 µF ceramic decoupling capacitor placed within 5 mm of the IC body. PIC18F devices have tight VDD rise-time requirements for the on-chip BOR; if VDD ramps slowly through the BOR threshold, the part can latch into an indeterminate state, so add a 10 µF bulk cap plus optional Schottky clamp for noisy 5 V rails.
Route the ICSP/ICD pins RB6 (PGC, pin 27) and RB7 (PGD, pin 28) with traces shorter than 25 mm and avoid routing them adjacent to switching signals. If the board must leave production programming via ICSP, leave test pads on the PGC/PGD/MCLR/VSS lines so that field firmware updates remain feasible without removing the chip.
Do not leave MCLR (pin 1) floating; tie it to VDD through a 10 kΩ resistor with an optional 100 nF cap to ground for ESD suppression. If the BOR/HLVD thresholds are configured in firmware, verify them at worst-case VDD before relying on them for safety-critical reset logic.
Keep the analog AVdd reference traces (AN0-AN4, VREF+/VREF-) short and away from switching I/O, especially from PORTB CCP PWM outputs, to avoid ADC channel-coupling artifacts. If precision conversion below ±2 LSB is required, add a small ferrite bead between VDD and AVDD and bypass AVDD with 100 nF + 10 µF capacitors.
Compliance Information
RoHS compliant and Pb-free per Microchip product page. The -E temperature grade is NOT equivalent to AEC-Q100 automotive qualification; choose PIC18F2620/2610 automotive-grade variants if AEC-Q100 is required.
