PIC18F2321-I/SS Microchip Integrated Circuit (Small Outline Packages) In Stock
The PIC18F2321-I/SS is an 8-bit PIC18 microcontroller from Microchip featuring 8 KB flash, 512 bytes of RAM, and a 10-channel 10-bit ADC running up to 40 MHz, in a 28-pin SSOP package. It offers rich peripherals for embedded control and sensor applications. Available in stock worldwide with fast shipping at competitive pricing.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 28
- Lifecycle
- ACTIVE
- Datasheet
- PIC18F2321-I/SS Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.8500(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 8 KB flash program memory and 512 bytes RAM in a compact 28-pin SSOP package for cost-sensitive embedded designs
- 10-channel 10-bit ADC at up to 40 MHz clock enables high-throughput sensor data acquisition
- PIC18 enhanced instruction set with hardware multiply supports efficient 8-bit control algorithms
Applications
The PIC18F2321-I/SS is well suited for low-cost embedded control applications such as home appliance controllers, industrial sensor nodes, and motor-drive feedback loops where an 8-bit core with analog peripherals is sufficient. Its 10-channel ADC makes it ideal for multi-sensor data acquisition systems, temperature monitoring boards, and battery management units. The 28-pin SSOP form factor and 40 MHz maximum clock speed provide a balance of peripheral density and processing speed for space-constrained PCBs.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SSOP-28 |
| Factory Lead Time | 5Weeks |
| YTEOL | 8 |
| Has ADC | YES |
| Bit Size | 8 |
| Boundary Scan | NO |
| CPU Family | PIC18 |
| Clock Frequency-Max | 40MHz |
| DAC Channels | NO |
| DMA Channels | NO |
| Format | FIXED POINT |
| Integrated Cache | NO |
| JESD-30 Code | R-PDSO-G28 |
| JESD-609 Code | e3 |
| Low Power Mode | YES |
| Number of External Interrupts | 3 |
| Number of I/O Lines | 25 |
| Number of Serial I/Os | 1 |
| Number of Timers | 6 |
| On Chip Program ROM Width | 8 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SSOP28,.3 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| RAM (bytes) | 512 |
| ROM (words) | 8192 |
| ROM Programmability | FLASH |
| Screening Level | TS 16949 |
| Speed | 40MHz |
| Supply Current-Max | 23mA |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 4.2V |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | 3A991.A.2 |
| HTS Code | 8542.31.00.01 |
| Country of Origin | Philippines, Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How much flash and RAM does the PIC18F2321-I/SS provide, and how does this fit a typical sensor application?
The PIC18F2321-I/SS includes 8 KB of flash program memory and 512 bytes of RAM, which comfortably holds firmware for reading 10 ADC channels, applying calibration coefficients, and transmitting data over UART or SPI. For temperature or pressure sensor nodes that sample a few channels at low rates, this memory footprint is more than adequate at a lower cost than larger PIC18 variants.
What ADC capability does the PIC18F2321-I/SS offer for multi-channel measurement designs?
The PIC18F2321-I/SS integrates a 10-channel, 10-bit ADC capable of resolving voltages across a 1024-step range, providing roughly 4.9 mV resolution on a 5 V reference. Running at up to 40 MHz, the CPU can service multiple ADC conversions per millisecond, making it suitable for industrial sensor aggregators that must scan temperature, current, and voltage channels in a single measurement cycle.
When is the PIC18F2321-I/SS a lower-cost alternative to a 32-bit microcontroller for motor-drive feedback?
For simple single-phase or brushed-DC motor speed control loops that require only PID calculation and 2–3 PWM channels, the PIC18F2321-I/SS at 40 MHz provides sufficient cycle budget without the BOM cost of a 32-bit ARM device. Its 8 KB flash eliminates unused code space, and the 28-pin SSOP package fits smaller PCBs compared to typical 32-pin or 48-pin 32-bit packages, reducing both unit cost and board area.
What communication interfaces are available on the PIC18F2321-I/SS for connecting to external devices?
The PIC18F2321-I/SS provides MSSP (supporting SPI and I2C as a master or slave) and a USART for RS-232 or RS-485 communication, enabling connection to LCD displays, EEPROM chips, and network modules within a 28-pin package. These 3 standard interfaces, combined with the 10 ADC inputs, allow a single device to simultaneously manage sensor acquisition and host communication at up to 40 MHz without external glue logic.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $3.9400 | $3.94 |
| 100+ | $3.2400 | $324.00 |
| 1000+ | $2.9900 | $2990.00 |
| 5000+ | $2.8500 | $14250.00 |
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