PIC32MX120F032BT-I/SO - 32KB Flash 40MHz MCU | Microchip
Teilenummer: PIC32MX120F032BT-I/SO ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $3.2 | $3,20 |
| 10 | $2.89 | $28,90 |
| 100 | $2.55 | $255,00 |
| 500 | $2.28 | $1.140,00 |
| 1.000 | $2.05 | $2.050,00 |
PIC32MX120F032BT-I/SO Übersicht
A 32-bit microcontroller (MCU) is an integrated circuit that combines a 32-bit CPU core, program memory (Flash), data memory (SRAM), and a rich set of peripherals on a single die. Within the broader hierarchy, PIC32MX devices belong to the PIC family -> 32-bit MCU class -> MIPS-based RISC microcontrollers -> embedded processors. Compared with 8-bit and 16-bit MCUs, 32-bit devices deliver higher MIPS throughput, larger address space, and richer connectivity for IoT, motor control, audio, and graphics user-interface designs.
Key features of the PIC32MX120F032BT-I/SO include 32KB (32K x 8) of self-programmable Flash, 8KB SRAM, Peripheral Pin Select (PPS) for flexible signal routing, two I2S/SPI modules for codec and serial communications, a Parallel Master Port (PMP) for graphics interfaces, a 10-bit Analog-to-Digital Converter with up to 13 channels, five 16-bit timers/counters, and a Charge Time Measurement Unit (CTMU) for mTouch capacitive touch buttons and sliders. Operating voltage is 2.3V to 3.6V with less than 0.5 mA/MHz active current consumption, which suits battery-powered and energy-aware designs.
Internally, the device uses a five-stage pipeline MIPS32 M4K RISC core achieving 1.56 DMIPS/MHz, with hardware multiply/divide and a single-cycle bit manipulation unit. The architecture also includes a prefetch cache controller that hides Flash wait states, allowing sustained 40 MHz core execution with zero Flash wait states using the 128-bit Flash access bus.
Typical applications include consumer electronics with graphical LCDs driven by PMP, USB HID devices (using the on-chip USB 2.0 full-speed transceiver), audio playback modules using I2S to external DACs, low-cost capacitive touch user interfaces, sensor hubs for industrial monitoring, and entry-level 32-bit designs migrating from PIC24 or PIC18 platforms.
When designing with this part, select 3.3V-tolerant peripherals to match the 2.3V-3.6V supply rail and use the PPS feature to remap peripheral functions onto spare I/O pins, simplifying PCB layout. Reserve an unused 32.768 kHz crystal input if RTC timing is desired via Timer1.
This page synthesizes distributor pricing, drop-in same-package alternatives, and design notes for the PIC32MX120F032BT-I/SO that are not consolidated in the manufacturer datasheet.
Drop-in-Alternativen für PIC32MX120F032BT-I/SO – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit PIC32MX120F032BT-I/SO (gleiche Bauform und Footprint) – abweichend in Package, ADC, Core Architecture, Operating Temperature, Program Memory (Flash).
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
PIC32MX120F032BT-50I/SO
✅ Drop-In✓ Auf Lager
$2.62 / Stück
Datenblatt ansehen →PIC32MX120F032B-I/SO
✅ Drop-In✓ Auf Lager
$1.71 / Stück
Datenblatt ansehen →PIC32MX110F016B-I/SO
✅ Drop-In✓ Auf Lager
$1.85 / Stück
Datenblatt ansehen →PIC32MX110F016BT-V/SO
✅ Drop-In✓ Auf Lager
$1.8 / Stück
Datenblatt ansehen →PIC32MM0032GPL028T-I/SO
✅ Drop-In✓ Auf Lager
$1.62 / Stück
Datenblatt ansehen →PIC32MX120F032BT-I/SO Grenzwerte & elektrische Eigenschaften
| Core Architecture | MIPS32 M4K |
| Datenbusbreite | 32-bit |
| Maximum Clock Speed | 40 MHz |
| Program Memory (Flash) | 32 KB (32K x 8) |
| RAM | 8 KB |
| Versorgungsspannung | 2.3 V to 3.6 V |
| I/O Pins | 21 |
| Betriebstemperatur | -40 C to +85 C (Industrial) |
| Gehäuse | 28-SOIC (7.50 mm width) |
| Montageart | Surface Mount |
| Timers | Five 16-bit |
| Communication | 2x I2S/SPI, I2C, UART, USB 2.0 Full-Speed |
| Special Features | Peripheral Pin Select (PPS), Parallel Master Port (PMP), CTMU (mTouch) |
| Active Current | < 0.5 mA / MHz |
| RoHS-Status | Compliant |
PIC32MX120F032BT-I/SO Pin-Konfiguration
| Pin 1 | MCLR — Master clear (reset) input, active-low; weak pull-up enabled in software |
| Pin 2 | PGED1 — ICSP data line / ICD pin 1 |
| Pin 3 | PGEC1 — ICSP clock line / ICD pin 1 |
| Pin 4 | RB0 — PPS-remappable I/O bit 0 |
| Pin 5 | RB1 — PPS-remappable I/O bit 1 |
| Pin 6 | RB2 — PPS-remappable I/O bit 2 |
| Pin 7 | RB3 — PPS-remappable I/O bit 3 |
| Pin 8 | VSS — Ground reference |
| Pin 9 | RB4 — PPS-remappable I/O bit 4 |
| Pin 10 | RB5 — PPS-remappable I/O bit 5 |
| Pin 11 | RB6 — PPS-remappable I/O bit 6 |
| Pin 12 | RB7 — PPS-remappable I/O bit 7 |
| Pin 13 | VDD — Positive supply input (2.3 V to 3.6 V) |
| Pin 14 | RA0 — PPS-remappable I/O / analog input AN0 |
| Pin 15 | RA1 — PPS-remappable I/O / analog input AN1 |
| Pin 16 | RA2 — PPS-remappable I/O / analog input AN2 |
| Pin 17 | RA3 — PPS-remappable I/O / analog input AN3 |
| Pin 18 | RA4 — PPS-remappable I/O / analog input AN4 |
| Pin 19 | VSS — Ground reference |
| Pin 20 | RA5 — PPS-remappable I/O / analog input AN5 |
| Pin 21 | RA6 — PPS-remappable I/O / analog input AN6 |
| Pin 22 | RA7 — PPS-remappable I/O / analog input AN7 |
| Pin 23 | RB8 — PPS-remappable I/O bit 8 |
| Pin 24 | RB9 — PPS-remappable I/O bit 9 |
| Pin 25 | RB10 — PPS-remappable I/O bit 10 |
| Pin 26 | RB11 — PPS-remappable I/O bit 11 |
| Pin 27 | VBUS — USB bus voltage detect (5 V tolerant) |
| Pin 28 | VDD — Positive supply input (2.3 V to 3.6 V) |
Typische Anwendungen
PIC32MX120F032BT-I/SO ist geeignet für 7 Anwendungs: USB HID / CDC Device, Graphical LCD with PMP, Audio CODEC Interface via I2S, Capacitive Touch User Interface, Industrial Sensor Hub, Consumer Appliance Controller, Migration Path from PIC24 / PIC18.
USB HID / CDC Device
The PIC32MX120F032BT-I/SO integrates a USB 2.0 full-speed device transceiver and dedicated USB PLL, making it a natural fit for HID-class peripherals (keyboards, mice, custom input devices), CDC virtual COM ports, and small vendor-class USB products. The 32 KB Flash is sufficient to host the Microchip Harmony USB stack plus a typical 8-12 KB application layer, while 8 KB SRAM comfortably buffers HID reports and CDC echo data. Drawing under 0.5 mA/MHz active, the part meets USB suspend current budgets when the MCU is clock-gated during enumeration.
Empfohlen
Graphical LCD with PMP
The on-chip Parallel Master Port (PMP) of the PIC32MX120F032BT-I/SO drives common 8-bit graphical LCD controllers (SSD1963, RA8875) and direct-interface character/graphical displays without an external bus driver. The 32 KB Flash holds a font table plus a UI state machine, and 8 KB SRAM can cache a partial framebuffer for small monochrome OLEDs. PPS lets the designer reassign the PMP data lines to spare I/O to ease PCB routing around connectors and the SOIC-28 footprint.
Empfohlen
Audio CODEC Interface via I2S
Two on-chip I2S modules let the PIC32MX120F032BT-I/SO bridge external 16/24-bit audio CODECs for playback, recording, or DSP preprocessing. The MIPS32 M4K core at 40 MHz (1.56 DMIPS/MHz) handles a 48 kHz stereo stream plus a small EQ/bi-quad routine while still serving UI tasks on the same die. Hardware DMA offloads sample movement from the core, and the 28-SOIC wide-body package aids thermal dissipation in always-listening voice-front designs.
Empfohlen
Capacitive Touch User Interface
The integrated CTMU (Charge Time Measurement Unit) on the PIC32MX120F032BT-I/SO supports Microchip mTouch capacitive buttons, sliders, and proximity sensors using only a few passive components per channel. With 21 I/O available on the 28-SOIC variant, the design can host up to 16-18 touch electrodes plus LEDs and serial-comm still link template. Active low-power modes drop current to the microamp range, suiting battery-powered touch remotes, white-goods panels, and appliance front panels.
Empfohlen
Industrial Sensor Hub
Operating from 2.3-3.6 V at industrial -40 C to +85 C, the PIC32MX120F032BT-I/SO reads analog sensors via its 10-bit ADC, digitizes them, and forwards the data over UART, I2C, or USB to a host PLC or gateway. The 40 MHz MIPS32 M4K core executes simple digital filtering (moving average, thresholding) without breaking a sweat. PPS routing keeps the PCB single-layer for many 4-20 mA loop repeater designs, while the wide 28-SOIC footprint withstands vibration better than fine-pitch QFN alternatives.
Empfohlen
Consumer Appliance Controller
From coffee machines to air purifiers, the PIC32MX120F032BT-I/SO combines a USB service port for firmware updates, a PMP bus for an LCD, mTouch for buttons/sliders, and a 10-bit ADC for sensor readback, all in one die. The 32 KB Flash is sufficient for menu logic plus USB CDC bootloader, and the 28-SOIC wide-body aids hand-soldering for prototype runs. The 0.5 mA/MHz active current and deep-sleep modes in the microamp range meet energy-star standby budgets for plug-in appliances.
Empfohlen
Migration Path from PIC24 / PIC18
Teams migrating legacy PIC24FJ or PIC18 designs to a 32-bit MIPS core land naturally on the PIC32MX120F032BT-I/SO. The peripheral register map is similar enough that MPLAB XC32 source code ports with limited effort, and the 28-SOIC footprint is compatible with common PIC24FJ256GA106 and PIC18F46K22 layouts (verify pin-by-pin against your BOM). The PIC32MX120F032BT-I/SO gives 4-8x more DMIPS than an equivalent PIC18 while preserving the 3.3V supply and PPS-style I/O flexibility.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für PIC32MX120F032BT-I/SO – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | PIC32MX120F032BT-50I/SO | PIC32MX120F032B-I/SO | PIC32MX110F016B-I/SO | PIC32MX110F016BT-V/SO | PIC32MM0032GPL028T-I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC (7.50 mm) | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same |
| Maximum Clock Speed | 40 MHz | 50 MHz | 40 MHz | 40 MHz | 40 MHz | 25 MHz |
| Flash Memory | 32 KB | 32 KB | 32 KB | 16 KB | 16 KB | 32 KB |
| SRAM | 8 KB | 8 KB | 8 KB | 4 KB | 4 KB | 8 KB |
| Operating Temperature | -40 C to +85 C (I) | -40 C to +85 C (I) | -40 C to +85 C (I) | -40 C to +85 C (I) | -40 C to +105 C (V) | -40 C to +85 C (I) |
| USB 2.0 FS | Yes (integrated) | Yes | Yes | Yes | Yes | No |
| Parallel Master Port (PMP) | Yes | Yes | Yes | Yes | Yes | Yes |
| CTMU (mTouch) | Yes | Yes | Yes | Yes | Yes | Yes |
| Tape & Reel Packaging | Yes (BT suffix) | Yes | No (tube) | No (tube) | Yes | Yes |
Wichtigste Unterscheidungsmerkmale
- 50 MHz upgrade option in the same 28-SOIC footprint (vs. PIC32MX120F032B-I/SO)
- Larger memory than the PIC32MX110F016B family (vs. PIC32MX110F016B-I/SO)
- V-temperature variant for harsher environments (vs. PIC32MX110F016BT-V/SO)
- Faster MIPS32 M4K core vs PIC32MM (vs. PIC32MM0032GPL028T-I/SO)
Designhinweise
Place a 10 uF bulk tantalum or ceramic capacitor plus a 0.1 uF decoupling capacitor within 5 mm of each VDD/VSS pin pair (pins 8/13 and 19/28). The PIC32MX120F032BT-I/SO operates from 2.3 V to 3.6 V; connecting VBUS (pin 27) to the USB VBUS line lets the on-chip USB PHY monitor bus presence. If USB is unused, tie VBUS to VDD through a 10 kOhm resistor to disable the USB module cleanly. The internal voltage regulator requires an external 10 uF capacitor on the VCAP/VDDCORE pin per the datasheet decoupling diagram.
Use a four-layer PCB with a continuous ground plane beneath the SOIC-28 footprint. Route the ICSP lines PGED1/PGEC1 (pins 2/3) directly to an in-circuit debugger header with no series resistors greater than 100 ohms, or debugging will fail. Place the 12 MHz primary oscillator crystal and its load capacitors within 5 mm of OSCI/OSCO. If using PPS, group peripheral signals on contiguous I/O banks to simplify firmware remap tables.
Estimated: Configure the Configuration Word FNOSC field for the desired oscillator source before programming; a missing FNOSC entry on first-power-up will leave the device in an undefined clock state. MCLR (pin 1) MUST NOT be left floating - either tie to VDD through a 10 kOhm pull-up or drive with a supervisor/open-drain reset source. When migrating from PIC24, verify A/D channel mappings: the 28-SOIC PIC32MX120F032B variant exposes 8 analog inputs on RA0-RA7, not the 13 channels listed in the family header.
Compliance-Informationen
RoHS and REACH compliance per Microchip product page. The 'I' industrial temperature grade is not AEC-Q100 qualified; select an automotive-grade PIC32 part for vehicle applications.
