PIC16F1828-I/P - 7KB Flash 8-Bit MCU 20-PDIP | Microchip
MPN: PIC16F1828-I/P ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.92 | $1.92 |
| 10 | $1.73 | $17.30 |
| 100 | $1.54 | $154.00 |
| 500 | $1.36 | $680.00 |
| 1,000 | $1.21 | $1,210.00 |
PIC16F1828-I/P Overview
An MCU (microcontroller unit) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, and a range of digital/analog peripherals. The PIC16F1828 belongs to the PIC16 family of 8-bit microcontrollers from Microchip, which sits below the PIC18/dsPIC/PIC32 product tiers and uses a RISC-style modified Harvard architecture. Within the broader taxonomy, microcontrollers are classified as integrated circuits within the embedded computing category, alongside MCUs from competing architectures such as ARM Cortex-M0+ (e.g., STM32G0, ATSAM), AVR (ATmega), and 8051. Designers choose 8-bit PIC MCUs when low cost, ultra-low power (XLP nanoWatt technology), deterministic interrupt handling, and broad toolchain/middleware support outweigh raw MIPS.
Key features of the PIC16F1828 include the integrated mTouch capacitive sensing module, a Data Signal Modulator (DSM) for generating custom bit streams, a 5-bit DAC reference (CVREF), MI2C/SPI/EUSART with auto-baud, two Enhanced CCP and two standard CCP PWM modules, selectable voltage-reference comparators, and on-chip debug support without requiring a debug header. The device delivers nanoWatt XLP sleep currents typically below 50 nA, enabling years of operation from a coin cell. NFC access to AGD and ECG ECG AFE integration combined with high-fidelity signal chain interfaces support both battery-powered sensor nodes and line-powered human-interface designs.
Architecturally, the PIC16F1828 uses a 14-bit instruction word, two-stage pipeline, and a peripheral pin-select (PPS) engine that remaps digital functions onto a wide set of I/O pins. The device supports in-circuit serial programming (ICSP) via two pins and offers an optional external debug header (AC244043) for use with PICkit 3 or MPLAB ICD 3. Its 12 I/O blocks (I/O Ports: 12 per data brief) and 8-channel 10-bit ADC make the part suitable for mixed analog/digital signal acquisition.
Typical applications include consumer remote controls (PIR + capacitive touch keypads), battery-powered IoT sensor nodes, LED lighting controllers with PWM dimming, HVAC thermostat front-ends, low-cost motor control for small DC fans and pumps, and industrial control replacement signals requiring UART/SPI/I2C connectivity. Designers pick this part when cost, footprint, and ultra-low standby current dominate over compute throughput.
When designing with the PIC16F1828-I/P, route VDD and VSS with wide, short traces to a 100 nF bypass capacitor placed within 5 mm of the package pins, and add a 10 µF bulk capacitor at the board supply entry. The through-hole PDIP package supports hand-soldered prototypes and is designed to be soldered with standard wave-soldering or hand-soldering equipment. Always honor the absolute maximum ratings of 6.5 V on VDD to avoid latch-up.
This page synthesizes distributor pricing, drop-in same-package alternatives, pin-level design guidance, and PIC16 family comparison data not consolidated in the manufacturer datasheet alone.
Drop-in alternatives for PIC16F1828-I/P — 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 PIC16F1828-I/P (same form factor and footprint) — differing in ADC, I/O Pins, Package, Program Memory (Flash), Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1828-E/P
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1828-I/P
✅ Drop-In✓ In Stock
$1.21 / Unit
View Datasheet →PIC16F1827-I/P
✅ Drop-In✓ In Stock
$1.24 / Unit
View Datasheet →PIC16F1826-I/P
✅ Drop-In✓ In Stock
$1.48 / Unit
View Datasheet →PIC16F1825-I/P
✅ Drop-In✓ In Stock
$1.23 / Unit
View Datasheet →PIC16F1824-I/P
✅ Drop-In✓ In Stock
$1.48 / Unit
View Datasheet →PIC16F1828-I/P Maximum Ratings & Electrical Characteristics
| Core | PIC16 enhanced mid-range 8-bit CPU |
| Instruction Set Size | 49 instructions, 14-bit word |
| Hardware Stack Depth | 16 levels |
| Maximum CPU Frequency | 32 MHz |
| Flash Program Memory | 7 KB (4K x 14 words) |
| RAM | 256 bytes |
| EEPROM | 256 bytes |
| I/O Pins | 12 |
| Supply Voltage (VDD) | 1.8 V to 5.5 V |
| Operating Temperature | -40 °C to +85 °C (industrial) |
| ADC | 6 ch x 10-bit |
| Comparators | 2 with selectable voltage reference |
| PWM Modules | 2 ECCP + 2 CCP |
| Communication Peripherals | MI2C, SPI, EUSART w/auto-baud |
| Package | 20-pin PDIP (through-hole) |
| Mounting Type | Through-Hole |
| MSL Level | 1 (not moisture sensitive) |
| RoHS Status | Compliant |
PIC16F1828-I/P Pin Configuration
| Pin 1 | RA5/DT/CWG1A — Digital I/O / EUSART DT / CWG output A |
| Pin 2 | RA4/CK/SRNQ — Digital I/O / EUSART CK / SR latch Q-output |
| Pin 3 | RA3/MCLR/VPP — Digital I/O / Master Clear (reset) / Programming voltage |
| Pin 4 | RA2/AN2/T0CKI — Digital I/O / Analog input 2 / Timer0 clock input |
| Pin 5 | RA1/AN1/ICSPCLK — Digital I/O / Analog input 1 / ICSP clock |
| Pin 6 | RA0/AN0/ICSPDAT — Digital I/O / Analog input 0 / ICSP data |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RA7/OSC1/CLKIN — Digital I/O / Crystal oscillator input / external clock |
| Pin 9 | RA6/OSC2/CLKOUT — Digital I/O / Crystal oscillator output / clock output |
| Pin 10 | RC0/SOSCO/SCLKI — Digital I/O / Secondary oscillator output / secondary clock in |
| Pin 11 | RC1/SOSCI/CCP2 — Digital I/O / Secondary oscillator input / CCP2 PWM |
| Pin 12 | RC2/CCP1 — Digital I/O / CCP1 PWM |
| Pin 13 | RC3/AN9 — Digital I/O / Analog input 9 |
| Pin 14 | RC4/AN8/MDOUT — Digital I/O / Analog input 8 / DSM output |
| Pin 15 | RC5/AN7/CCP3 — Digital I/O / Analog input 7 / CCP3 PWM |
| Pin 16 | RC6/AN6/SS — Digital I/O / Analog input 6 / SPI slave select |
| Pin 17 | RC7/AN5/SDI — Digital I/O / Analog input 5 / SPI data in |
| Pin 18 | RB7/AN11/SDO — Digital I/O / Analog input 11 / SPI data out |
| Pin 19 | RB6/AN10/SCK/SCL — Digital I/O / Analog input 10 / SPI clock / I2C clock |
| Pin 20 | VDD — Positive supply voltage (1.8 V to 5.5 V) |
Typical Applications
PIC16F1828-I/P is suitable for 7 applications: Battery-Powered IoT Sensor Node, Capacitive Touch Keypad Front-End, HVAC Thermostat and Climate Sensor, LED Lighting Controller with PWM Dimming, Small DC Fan and Pump Motor Control, Consumer Remote Control (IR + Touch), Industrial UART/SPI Sensor Hub.
Battery-Powered IoT Sensor Node
The PIC16F1828-I/P fits battery-powered IoT sensor nodes due to its nanoWatt XLP technology delivering typical sleep currents below 50 nA and active currents in the microampere range. With 7 KB Flash and 256 bytes RAM, the device hosts a sensor acquisition loop, simple protocol stack (e.g., Modbus RTU over UART), and housekeeping code on coin-cell or 2xAA batteries. The 32 MHz HFINTOSC eliminates external crystals, reducing BOM cost and board area. The integrated 10-bit ADC and selectable voltage-reference comparators directly interface thermistors, photodiodes, and PIR motion sensors. The PIC16F1828-I/P is placed in a sensor daughter-board with a 100 nF decoupling capacitor, a 10 µF bulk cap, and a low-cost 32.768 kHz crystal for Sleep-with-RTC timing. Engineers select this part over Cortex-M0 alternatives when cost and standby current dominate over compute throughput. The 20-pin PDIP package is ideal for hand-assembled prototype nodes and field-replaceable sensor cartridges in industrial IoT deployments.
Recommended
Capacitive Touch Keypad Front-End
The PIC16F1828-I/P is well suited for capacitive-touch keypad front-ends thanks to its integrated mTouch capacitive sensing module, which provides hardware-driven charge-time measurement on up to 12 touch channels without external touch ICs. Combined with 2 ECCP + 2 CCP PWM modules, the device can drive LED backlighting and haptic feedback while scanning the keypad at low CPU overhead. The 32 MHz instruction rate supports a 50 Hz refresh across a 12-key matrix, and the nanoWatt XLP technology allows sleep between touches for battery-powered remote controls. The 256-byte RAM buffers debounced key events. The PIC16F1828-I/P is placed between the touch sensor PCB and the host MCU, communicating via SPI or UART. Engineers select this part over dedicated touch ICs when flexibility, GPIO expansion, and firmware-driven tuning matter more than BOM count. The 20-pin PDIP package supports hand-soldered prototypes and field-replaceable front-panel assemblies in consumer appliances.
Recommended
HVAC Thermostat and Climate Sensor
The PIC16F1828-I/P fits HVAC thermostat and climate sensor designs due to its 6-channel 10-bit ADC (which directly reads NTC thermistors and humidity sensors), 2 comparators with selectable voltage reference for thermostat switchover, and EUSART with auto-baud for HVAC bus connectivity. With 7 KB Flash, the part hosts a PID control loop, scheduling logic, and Modbus/Wi-Fi serial pass-through firmware. The 1.8 V to 5.5 V supply range accommodates both 3.3 V sensor rails and 5 V HVAC bus transceivers. The 32 MHz HFINTOSC drives the control loop without external crystals, lowering BOM cost. The PIC16F1828-I/P is placed on the thermostat main board with a 100 nF bypass cap, a 10 µF bulk cap, and an EEPROM (e.g., 24LC256) for setpoint storage. Engineers select this part over PIC18 alternatives when 7 KB Flash is sufficient and cost dominates. The 20-pin PDIP package supports through-hole thermostat assemblies with conventional wave-soldered manufacturing.
Recommended
LED Lighting Controller with PWM Dimming
The PIC16F1828-I/P fits LED lighting controller designs due to its 2 ECCP + 2 CCP PWM modules (each with 10-bit resolution), 32 MHz instruction rate, and MI2C/SPI/EUSART for DMX-512 or DALI bridge connectivity. With 7 KB Flash, the device hosts smooth-dim firmware, color-mixing algorithms, and DMX frame parsing. The nanoWatt XLP technology enables standby currents below 50 nA, which is critical for always-listening DMX receivers in architectural lighting. The 1.8 V to 5.5 V supply range accommodates both 3.3 V logic and 5 V DMX transceivers. The PIC16F1828-I/P is placed on the LED driver board with a 100 nF bypass cap, a MOSFET gate-driver (e.g., MCP1416), and a DMX transceiver (e.g., MAX485). Engineers select this part over 32-bit Cortex-M alternatives when deterministic PWM timing and low BOM cost dominate. The 20-pin PDIP package suits hand-soldered prototype lighting fixtures and through-hole assembly.
Recommended
Small DC Fan and Pump Motor Control
The PIC16F1828-I/P is well suited for small DC fan and pump motor controllers due to its 2 ECCP + 2 CCP PWM modules (with hardware fault-input shutdown), 6-channel 10-bit ADC for current/voltage sensing, and selectable voltage reference for comparator-based stall protection. With 7 KB Flash, the device hosts a closed-loop RPM controller, soft-start logic, and fault-recovery firmware. The 32 MHz HFINTOSC drives the loop without external crystals, and the nanoWatt XLP technology enables sleep modes between duty cycles. The 1.8 V to 5.5 V supply range accommodates 3.3 V logic and 5 V H-bridge drivers. The PIC16F1828-I/P is placed on the motor-control board with a 100 nF bypass cap, an H-bridge driver (e.g., DRV8870), and a current-sense resistor network. Engineers select this part over dedicated motor-control ICs when flexibility and field-tunable firmware matter more than integrated FOC. The 20-pin PDIP package supports through-hole fan assemblies with conventional manufacturing.
Recommended
Consumer Remote Control (IR + Touch)
The PIC16F1828-I/P fits consumer remote-control designs due to its integrated mTouch capacitive sensing, EUSART for IR modulation, PWM for IR carrier generation, and nanoWatt XLP technology delivering typical sleep currents below 50 nA. With 7 KB Flash, the device hosts IR protocol stacks (RC5, NEC, SIRC), touch-scanning firmware, and battery-life management. The 32 MHz HFINTOSC and 256-byte RAM support multi-protocol handling on a coin-cell battery. The 1.8 V to 5.5 V supply range accommodates 3 V CR2032 coin cells directly. The PIC16F1828-I/P is placed on the remote PCB with a 100 nF bypass cap, an IR LED with MOSFET driver, and a piezo buzzer for tactile feedback. Engineers select this part over low-cost 4-bit MCUs when capacitive touch and multi-protocol IR are needed. The 20-pin PDIP package supports hand-assembled prototypes and low-volume consumer electronics.
Recommended
Industrial UART/SPI Sensor Hub
The PIC16F1828-I/P fits small industrial sensor hubs due to its MI2C, SPI, and EUSART (with auto-baud) connectivity, 6-channel 10-bit ADC, and 12 I/O pins for sensor multiplexing. With 7 KB Flash, the device hosts Modbus RTU master/slave stacks, sensor polling loops, and digital filtering. The 32 MHz HFINTOSC drives deterministic communication timing, and the industrial -40 °C to +85 °C temperature range supports factory-floor deployment. The 1.8 V to 5.5 V supply range accommodates both 3.3 V and 5 V industrial sensors. The PIC16F1828-I/P is placed on the sensor-hub PCB with a 100 nF bypass cap, a 10 µF bulk cap, an RS-485 transceiver (e.g., MAX485), and pull-up resistors on the I2C bus. Engineers select this part over Cortex-M0+ alternatives when deterministic interrupt latency and BOM cost dominate. The 20-pin PDIP package supports hand-soldered prototype hubs and field-serviceable industrial assemblies.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1828-I/P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1828-E/P | PIC16F1827-I/P | PIC16F1826-I/P | PIC16F1825-I/P | PIC16F1824-I/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-pin PDIP | 20-pin PDIP - same | 20-pin PDIP - same | 20-pin PDIP - same | 20-pin PDIP - same | 20-pin PDIP - same |
| Flash Program Memory | 7 KB (4K x 14) | 7 KB | 7 KB | 8 KB | 14 KB | 4 KB |
| RAM | 256 B | 256 B | 512 B | 512 B | 512 B | 256 B |
| I/O Pins | 12 | 12 | 16 | 16 | 16 | 12 |
| Maximum CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Temperature | -40 °C to +85 °C (industrial) | -40 °C to +125 °C (extended) | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C |
| mTouch Capacitive Sensing | Yes | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Same-package Flash upgrade option within family (vs PIC16F1826-I/P)
- Larger RAM option in same package (vs PIC16F1827-I/P)
- Extended temperature option in same package (vs PIC16F1828-E/P)
- Highest Flash density in 20-pin PDIP (vs PIC16F1825-I/P)
Design Notes
The PIC16F1828-I/P operates from 1.8 V to 5.5 V on the VDD pin (pin 20). Place a 100 nF ceramic bypass capacitor within 5 mm of the VDD/VSS pins to suppress digital switching noise on the analog reference. Add a 10 µF bulk capacitor at the board supply entry to handle inrush during sleep-to-active transitions. Do not exceed the absolute-maximum VDD rating of 6.5 V to avoid latch-up. For battery life optimization, leverage the nanoWatt XLP Sleep mode (typical current below 50 nA) and wake on interrupt from mTouch or comparator modules.
The 20-pin PDIP package has a 2.54 mm pin pitch and supports through-hole assembly with wave soldering or hand-soldering. Route the ICSP clock and data pins (RA1/ICSPCLK and RA0/ICSPDAT) to a 6-pin header for PICkit 3 or MPLAB ICD 3 in-circuit debug. Keep analog input traces (RA0-RA3, RC3-RC7, RB6-RB7) short and guarded by ground traces to minimize digital-to-analog coupling. PCI14 is best paired with a low-impedance ground plane for clean ADC readings.
Do not forget the MCLR pull-up resistor on pin 3 (RA3/MCLR/VPP) - a 10 kΩ pull-up to VDD is required for normal operation, and the pin must be brought low only for external reset or ICSP programming. Do not exceed the absolute-maximum VDD rating of 6.5 V. When migrating from PIC16F1828-I/P to PIC16F1824-I/P, note the Flash size reduction (4 KB vs 7 KB) which may require code optimization. The 32 MHz HFINTOSC accuracy is typically ±1% over the industrial temperature range - use an external crystal if higher accuracy is required for UART communication.
Route VDD with wide, short traces to minimize voltage drop during high-current transients. Place the ICSP connector at the board edge for easy debug access, with RA0/RA1 routed to the ICSP header with short traces to avoid signal integrity issues. The mTouch capacitive sensing traces should be kept short and shielded to avoid crosstalk; place a ground guard ring around each touch pad for better noise immunity. For high-impedance analog inputs, minimize trace length and avoid routing near PWM output traces.
Compliance Information
RoHS and REACH compliant per Microchip product page. PDIP package is lead-free (Pb-free) and halogen-free. AEC-Q100 qualification not applicable for industrial temperature grade; choose PIC16F1828-E/P for AEC-Q100-grade automotive applications.
