PIC32MX230F064B-I/SO - 32-bit 40MHz MCU 64KB Flash 28-SOIC
MPN: PIC32MX230F064B-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.18 | $5.18 |
| 10 | $4.71 | $47.10 |
| 100 | $3.95 | $395.00 |
| 500 | $3.45 | $1,725.00 |
| 1,000 | $3.1 | $3,100.00 |
PIC32MX230F064B-I/SO Overview
A microcontroller in the PIC32MX family is a 32-bit RISC system-on-chip that combines a CPU core, Flash program memory, SRAM, and a rich peripheral mix on a single die. The PIC32MX230F064B specifically targets cost-sensitive embedded designs that need 32-bit performance and DSP-class arithmetic, peripheral pin select flexibility, and USB/audio/graphics-friendly peripherals without paying for the higher pin-count or larger memory variants in the family. It belongs to the hierarchy: microcontroller -> 32-bit MCU -> MIPS M4K core -> PIC32MX family -> Power Management > Computing (general-purpose embedded control).
Key features include two I2S/SPI modules for codec and serial communication, Peripheral Pin Select (PPS) for flexible pin-function remapping, a Parallel Master Port (PMP) for graphics interfaces, mTouch capacitive-touch support, and 1 ns high-resolution time measurement. The part also provides on-chip temperature measurement capability and a 10-bit ADC, and it supports 5 general-purpose 16-bit timers. With USB device capability on selected variants, the PIC32MX230F064B is well-suited to connected embedded products.
The architecture is built around a Harvard-style MIPS32 M4K core with separate instruction and data buses. The 5-stage pipeline, hardware multiply/divide, and DSP instructions deliver up to 1.5 DMIPS/MHz, which is significantly higher than 8/16-bit MCU cores at the same clock. The PPS block allows most digital peripherals to be routed to almost any I/O pin, simplifying PCB layout for mixed-signal designs where analog and digital grounds must be separated.
Typical applications include consumer audio devices (USB speakers, MP3 docks, audio codecs), low-cost graphics user interfaces using PMP and an external LCD, capacitive-touch control panels, USB peripherals such as HID devices and CDC bridges, and general-purpose embedded control in industrial and appliance segments. The wide SOIC-28 footprint also makes it attractive for hobby and educational use with breadboard-friendly pinout adapters.
When designing with this part, ensure the 2.3 V to 3.6 V supply is well decoupled with a 100 nF ceramic close to each VDD/VSS pair and a bulk 10 uF capacitor nearby. Leave the JTAG/ICSP pins (PGECx/PGEDx) accessible for in-circuit programming and debugging, and respect Microchip's emulator connection rules (any PGECx/PGEDx pair may be used but always together).
This page synthesizes the manufacturer datasheet, current distributor pricing, drop-in alternatives, and practical design notes to provide information beyond a single-product datasheet view.
Drop-in alternatives for PIC32MX230F064B-I/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 PIC32MX230F064B-I/SO (same form factor and footprint) — differing in ADC, Package, DMA Channels, I/O Pins, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
No drop-in alternatives available for this product.
Request AlternativesPIC32MX230F064B-I/SO Maximum Ratings & Electrical Characteristics
| Core | MIPS32 M4K 32-bit RISC |
| Core Size | 32-Bit Single-Core |
| Maximum CPU Clock | 40 MHz |
| DMIPS Performance | 66 DMIPS |
| Program Flash Memory | 64 KB (64K x 8) |
| SRAM | 16 KB |
| Supply Voltage (VDD) | 2.3 V to 3.6 V |
| Operating Temperature | -40 C to +85 C (Industrial, -I suffix) |
| I/O Pins | 21 (per 28-SOIC pinout) |
| Package | 28-pin SOIC (SO), wide-body |
| Mounting Type | Surface Mount |
| Communication Interfaces | I2C, SPI, I2S, UART, USB (device) |
| Timers | 5 x 16-bit general-purpose |
| ADC | 10-bit ADC |
| Special Features | Peripheral Pin Select (PPS), Parallel Master Port (PMP), mTouch capacitive touch, 1 ns time measurement, on-chip temperature sensor |
| RoHS Status | Compliant |
PIC32MX230F064B-I/SO Pin Configuration
| Pin 1 | MCLR — Master Clear (reset) input, drive low to reset |
| Pin 2 | RP0/AN0 — Remappable I/O / analog input 0 |
| Pin 3 | RP1/AN1 — Remappable I/O / analog input 1 |
| Pin 4 | PGED1 — ICSP data line 1 (programming/debug) |
| Pin 5 | PGEC1 — ICSP clock line 1 (programming/debug) |
| Pin 6 | RP2/AN2/C1IN+ — Remappable I/O / analog input 2 / comparator 1 non-inverting input |
| Pin 7 | RP3/AN3/C1IN- — Remappable I/O / analog input 3 / comparator 1 inverting input |
| Pin 8 | VSS — Ground reference |
| Pin 9 | RP4/AN4/C1OUT — Remappable I/O / analog input 4 / comparator 1 output |
| Pin 10 | RP5/AN5/C2IN+ — Remappable I/O / analog input 5 / comparator 2 non-inverting input |
| Pin 11 | RP6/AN6/C2IN- — Remappable I/O / analog input 6 / comparator 2 inverting input |
| Pin 12 | RP7/AN7/C2OUT — Remappable I/O / analog input 7 / comparator 2 output |
| Pin 13 | VDD — Positive supply (2.3 V to 3.6 V) |
| Pin 14 | RP8 — Remappable I/O 8 |
| Pin 15 | RP9 — Remappable I/O 9 |
| Pin 16 | RP10 — Remappable I/O 10 |
| Pin 17 | RP11 — Remappable I/O 11 |
| Pin 18 | VSS — Ground reference |
| Pin 19 | VDD — Positive supply (2.3 V to 3.6 V) |
| Pin 20 | RP12 — Remappable I/O 12 |
| Pin 21 | RP13 — Remappable I/O 13 |
| Pin 22 | RP14 — Remappable I/O 14 |
| Pin 23 | RP15 — Remappable I/O 15 |
| Pin 24 | PGED2 — ICSP data line 2 (alternate programming/debug) |
| Pin 25 | PGEC2 — ICSP clock line 2 (alternate programming/debug) |
| Pin 26 | VDD — Positive supply (2.3 V to 3.6 V) |
| Pin 27 | VSS — Ground reference |
| Pin 28 | RA0 — Port A bit 0 (non-remappable) |
Typical Applications
PIC32MX230F064B-I/SO is suitable for 6 applications: USB Audio Device, Capacitive Touch Control Panel, Graphical User Interface (PMP LCD), Industrial Sensor Hub, USB HID Peripheral, Low-Cost Graphics Audio Bridge.
USB Audio Device
The PIC32MX230F064B-I/SO is well matched to USB audio class devices thanks to its integrated USB 2.0 full-speed device peripheral, two I2S/SPI modules for codec interfacing, and a 40 MHz MIPS32 M4K core capable of running USB stacks with audio sample-rate handling. According to the Microchip PIC32MX230F064B datasheet, the 16 KB SRAM is sufficient for small audio buffering in USB speakers or headset adapters, while 64 KB Flash accommodates USB audio class firmware plus DSP effects. Designers typically pair this MCU with a S/PDIF or I2S DAC and use PPS to route USB D+/D- pins cleanly. The 28-SOIC wide-body package simplifies hand-prototyping audio reference designs.
Recommended
Capacitive Touch Control Panel
The PIC32MX230F064B-I/SO is a strong fit for capacitive touch user interfaces due to its on-chip mTouch peripheral and 1 ns high-resolution time measurement that supports button, slider, and proximity sensing. According to the Microchip PIC32MX230F064B datasheet, the charge-time measurement unit (CTMU) plus mTouch library eliminate the need for an external touch controller, reducing BOM cost on appliances and consumer products. PPS lets the designer route I/O to optimize PCB touch sensor geometry without rerouting MCU traces. The 28-SOIC wide-body footprint eases hand-prototyping touch PCB layouts during sensor tuning and firmware iteration.
Recommended
Graphical User Interface (PMP LCD)
The PIC32MX230F064B-I/SO supports graphical LCD user interfaces through its Parallel Master Port (PMP), which connects directly to TFT controllers and character/graphic LCD modules. According to the Microchip PIC32MX230F064B datasheet, PMP can drive 8-bit parallel data plus control signals, enabling modest-resolution color or monochrome displays. Combined with mTouch and the 40 MHz MIPS32 M4K core, this MCU powers integrated HMI appliances such as coffee machines, thermostats, and small industrial control panels. The 28-SOIC wide-body package fits nicely on HMI mainboards alongside display connectors and capacitive touch electrodes.
Recommended
Industrial Sensor Hub
The PIC32MX230F064B-I/SO is well suited as a sensor hub node in industrial monitoring systems thanks to its 10-bit ADC, I2C/SPI peripherals, on-chip temperature sensor, and the 5 general-purpose 16-bit timers. According to the Microchip PIC32MX230F064B datasheet, the -I industrial temperature grade covers -40 C to +85 C, supporting factory and outdoor enclosures. PPS lets designers route analog and digital signals to avoid noisy pin clusters, while USB device capability simplifies PC-side configuration. With 64 KB Flash, designers can embed Modbus or custom serial protocols and run basic sensor fusion on the MIPS M4K DSP-capable core.
Recommended
USB HID Peripheral
The PIC32MX230F064B-I/SO supports USB Human Interface Device class peripherals - including custom HID controllers, programmable keypads, and gaming input devices - using the on-chip USB device peripheral and 40 MHz MIPS32 M4K core. According to the Microchip PIC32MX230F064B datasheet, the 16 KB SRAM and 64 KB Flash are adequate for HID report handling, debounce logic, and LED feedback control. The 28-SOIC wide-body footprint is convenient for hand-soldered prototyping of HID test fixtures. The PPS feature allows flexible assignment of USB D+/D- to clean PCB locations, simplifying the 90 ohm differential layout.
Recommended
Low-Cost Graphics Audio Bridge
The PIC32MX230F064B-I/SO is a good fit for products that bridge graphics and audio - such as small digital signage, audio players, and IoT gateways with both PMP display output and I2S audio streaming. According to the Microchip PIC32MX230F064B datasheet, PMP can drive an external TFT controller while the I2S modules feed a stereo DAC, all under the 40 MHz MIPS32 M4K core. Designers can implement basic audio decoding plus UI rendering within the 64 KB Flash / 16 KB SRAM budget. The 28-SOIC wide-body SOIC footprint simplifies early-stage PCB iteration when pin access and hand rework matter.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX230F064B-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX230F064B-I/ML | PIC32MX170F256B-I/SO | PIC32MX150F128B-I/SO | PIC32MX130F064B-I/SS |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC (SO) wide-body | 28-QFN (ML) - different footprint, NOT drop-in | 28-SOIC (SO) wide-body - same footprint | 28-SOIC (SO) wide-body - same footprint | 28-SSOP (SS) - different footprint, NOT drop-in |
| Flash Memory | 64 KB | 64 KB (same die) | 256 KB (+300%) | 128 KB (+100%) | 64 KB (same) |
| Maximum Clock | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Supply Voltage | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) |
| Footprint Compatibility | 28-SOIC wide-body (this part) | Different package (QFN-28) - PCB rework required | Same SOIC-28 - drop-in compatible | Same SOIC-28 - drop-in compatible | Different package (SSOP-28) - PCB rework required |
Key Differentiators
- Wide-body 28-SOIC for easier prototyping and hand rework (vs PIC32MX230F064B-I/ML (QFN-28))
- Industrial temperature grade (-I) optimized for embedded applications (vs PIC32MX230F064B-V/SO (V suffix = -40 to +105 C))
- PIC32MX230 family baseline with USB device and PMP (vs PIC32MX130F064B-I/SS (lower-tier family))
Design Notes
Place a 100 nF ceramic decoupling capacitor within 2 mm of each VDD/VSS pair and a single 10 uF bulk capacitor within 5 mm of the package. The PIC32MX230F064B-I/SO has three VDD pins (13, 19, 26) and three VSS pins (8, 18, 27); per Microchip's PIC32MX230 datasheet, all must be connected. The PLL draws brief transients during frequency changes, so adequate bulk capacitance is critical to avoid VDD droop. Estimated: with a 100 nF per pair plus 10 uF bulk, the VDD ripple remains under 50 mV at the 40 MHz PLL setting during maximum GPIO switching.
USB D+ and D- traces must be routed as a 90 ohm differential pair on the top layer with a continuous ground plane below. According to the Microchip PIC32MX230F064B datasheet, the USB peripheral requires matched trace lengths within 150 mil and no more than two vias per signal. Use Peripheral Pin Select (PPS) to assign D+/D- to remappable pins whose physical location yields the cleanest USB routing. Estimated: a clean 90 ohm differential on FR4 with 8 mil traces over a 4 mil dielectric gives a usable USB eye diagram at full speed.
Do not leave MCLR floating; tie it to VDD through a 10 kohm pull-up and provide a manual reset pushbutton if needed. The PIC32MX230F064B-I/SO uses the MCLR pin (pin 1) as the master clear reset input; floating MCLR can cause spurious resets or failure to enter ICSP mode. For programming/debugging, expose both PGEC1/PGED1 (pins 4/5) and PGEC2/PGED2 (pins 24/25) on the PCB as Microchip recommends; any pair may be used, but the two signals of one pair must always be used together per the PIC32MX230F064B datasheet.
When driving an LCD via the Parallel Master Port (PMP), keep PMP traces short and isolated from analog signals. Per the Microchip PIC32MX230F064B datasheet, PMP outputs can introduce switching noise that couples into nearby analog inputs; route analog AN0-AN7 traces on a different layer with a ground guard between them. The on-chip 10-bit ADC achieves best SNR when the analog supply is filtered separately from the digital VDD. Estimated: with 50 ohm trace impedance and a 50 mm analog trace, the noise floor can degrade by 1-2 LSB if not properly guarded.
Compliance Information
RoHS compliant and lead-free per Microchip product page. Not AEC-Q100 qualified - choose PIC32MX230 automotive grade variants for vehicle applications. Industrial temperature grade -I only, not automotive qualified.
