Microchip Technology
DSPIC33FJ12MC202-I/SO - 16-bit DSC, 12KB Flash, 40 MIPS Motor Control MCU | Microchip
MPN： DSPIC33FJ12MC202-I/SO ✓ 啟用中
3.0 V to 3.6 V Vdss
SOIC-28 (wide body, 7.50 mm / 300 mil) Package
40 MHz Speed
12 KB Memory
MOQ： 1 |
DSPIC33FJ12MC202-I/SO 概覽
The Microchip DSPIC33FJ12MC202-I/SO is a 16-bit Digital Signal Controller (DSC) in a 28-pin SOIC (7.50 mm) wide-body package that delivers 40 MIPS throughput, 12 KB Flash program memory, and 1 KB SRAM from a 3.0 V to 3.6 V single supply. It pairs a 16-bit MCU architecture with on-chip DSP extensions (MAC, barrel shifter, hardware divide) and motor-control oriented peripherals including a 6-channel PWM with complementary outputs and programmable dead time, a 200 ksps 10-bit ADC, and a 16-bit timer/capture/compare cluster. The '-I' suffix indicates the industrial operating range of -40 °C to +85 °C, and the '/SO' suffix denotes the wide-body 300-mil SOIC-28 footprint.
What is a Digital Signal Controller (DSC)? A DSC is a hybrid MCU/DSP family that retains the deterministic interrupt model of a microcontroller while adding single-cycle MAC and saturating arithmetic, allowing closed-loop control loops and audio/power signal processing to run on a single device instead of an MCU+DSP pair. The dsPIC33FJ12MC202 sits inside Microchip's motor-control subgroup of the dsPIC33F family; in the wider taxonomy it belongs to MCU -> 16-bit MCU -> DSC -> motor-control DSC -> power management & motion control semiconductor.
Key features include 40 MHz operation (10 MIPS at 3.3 V), 21 general-purpose I/O with 5 V-tolerant inputs, JTAG/ICSP debug, two UART, one SPI, one I2C, a 6-channel motor-control PWM, a 200 ksps 10-bit ADC (up to 9 channels on this 28-pin variant), and peripheral pin select for flexible signal routing. The 28-pin SOIC footprint is pin-compatible with the PIC24 and dsPIC33F GP202 families, easing PCB reuse across control SKUs.
Architecturally, the device uses a Harvard bus with separate program (Flash) and data (SRAM) paths, a 16 × 16-bit working register array, and DSP instructions that execute in a single oscillator cycle. The internal 7.3728 MHz FRC oscillator with 64x PLL provides 40 MIPS at ±1 % accuracy over voltage and temperature, allowing the MCU to run without an external crystal and still meet Class-B motor-control timing.
Typical applications include brushed DC motor drives, BLDC/PMSM sensored and sensor-less control, low-powerfield-oriented-control (FOC) fans and pumps,small appliance drives, and digital lighting ballasts. The 40 MIPS headroom + dedicated PWM/ADC hardware pair is sized for 6-step trapezoidal commutation up to ~30 kHz electrical frequency.
When designing with this device, populate the MCLR pull-up, place AVSS/AGND and VSS/VSS separation on a star ground, and use the peripheral pin-select feature if your PCB swaps UART lines for SPI debug access.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design notes not found in the manufacturer datasheet.
What is a Digital Signal Controller (DSC)? A DSC is a hybrid MCU/DSP family that retains the deterministic interrupt model of a microcontroller while adding single-cycle MAC and saturating arithmetic, allowing closed-loop control loops and audio/power signal processing to run on a single device instead of an MCU+DSP pair. The dsPIC33FJ12MC202 sits inside Microchip's motor-control subgroup of the dsPIC33F family; in the wider taxonomy it belongs to MCU -> 16-bit MCU -> DSC -> motor-control DSC -> power management & motion control semiconductor.
Key features include 40 MHz operation (10 MIPS at 3.3 V), 21 general-purpose I/O with 5 V-tolerant inputs, JTAG/ICSP debug, two UART, one SPI, one I2C, a 6-channel motor-control PWM, a 200 ksps 10-bit ADC (up to 9 channels on this 28-pin variant), and peripheral pin select for flexible signal routing. The 28-pin SOIC footprint is pin-compatible with the PIC24 and dsPIC33F GP202 families, easing PCB reuse across control SKUs.
Architecturally, the device uses a Harvard bus with separate program (Flash) and data (SRAM) paths, a 16 × 16-bit working register array, and DSP instructions that execute in a single oscillator cycle. The internal 7.3728 MHz FRC oscillator with 64x PLL provides 40 MIPS at ±1 % accuracy over voltage and temperature, allowing the MCU to run without an external crystal and still meet Class-B motor-control timing.
Typical applications include brushed DC motor drives, BLDC/PMSM sensored and sensor-less control, low-powerfield-oriented-control (FOC) fans and pumps,small appliance drives, and digital lighting ballasts. The 40 MIPS headroom + dedicated PWM/ADC hardware pair is sized for 6-step trapezoidal commutation up to ~30 kHz electrical frequency.
When designing with this device, populate the MCLR pull-up, place AVSS/AGND and VSS/VSS separation on a star ground, and use the peripheral pin-select feature if your PCB swaps UART lines for SPI debug access.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design notes not found in the manufacturer datasheet.
直接替換替代品，適用於 DSPIC33FJ12MC202-I/SO — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： DSPIC33FJ12MC202-I/SO （相同外形與佔位） — 差異在於 Operating Temperature, Package, ADC, Core Architecture, Timers.
Microchip Technology
Operating Temperature: -40C to +85C (I grade)
Package: 28-pin SOIC (SO)
Timers: 5
Microchip Technology
Operating Temperature: -40C to +85C (Industrial, I suffix)
Package: 28-SOIC (0.295 in, 7.50 mm width)
ADC: Advanced analog, high-speed
Microchip Technology
Operating Temperature: -40 C to +85 C (Industrial)
Package: 18-pin SOIC (SO), 1.27 mm pitch
ADC: 10-bit, multi-channel
Microchip Technology
Operating Temperature: -40C to +85C (Industrial)
Package: 28-pin SOIC (SO)
ADC: 10-bit, up to 1 Msps
Microchip Technology
Operating Temperature: -40C to +85C (industrial, "-I")
Package: 20-pin SOIC (0.300-inch / 7.5 mil pitch)
ADC: 10-bit, up to 500 ksps, up to 8 channels
Microchip Technology
Operating Temperature: -40 C to +125 C (Industrial / -E grade)
Package: 28-pin SOIC wide (SO) 7.50 mm body
ADC: 10-bit, up to 8 channels, 1.1 Msps
Microchip Technology
Package: 28-pin SSOP (5.30 mm body width)
ADC: 10-bit, up to 1.5 Msps, 8 channels
Microchip Technology
Operating Temperature: -40C to +125C (automotive Grade 1, "E")
ADC: 10-bit, 1.1 Msps, 6 channels
Core Architecture: dsPIC33F 16-bit DSC (modified Harvard)
Microchip Technology
Operating Temperature: -40C to +125C (extended, E suffix)
Package: 28-pin SOIC (SO), wide body
ADC: 10-bit, up to 1.1 Msps
Microchip Technology
Operating Temperature: -40C to +125C (E grade)
Package: 20-lead SOIC
ADC: 10-bit
Microchip Technology
Operating Temperature: -40C to +85C (industrial, -I suffix)
Package: 20-SOIC (0.295 in / 7.50 mm width)
ADC: 10-bit / 12-bit ADC (family feature)
Microchip Technology
Operating Temperature: -40C to +125C (E grade)
Package: 28-pin SOIC (SO), 0.65 in body width
Core Architecture: 16-bit dsPIC33F DSC, modified Harvard
DSPIC33FJ12MC201-I/SO
✅ 直接替換Microchip Technology
📦 SOIC-28
16-bit dsPIC33F DSC (modified Harvard) · 16-bit MCU + DSP extensions (single-cycle MAC) · 40 MIPS (40 MHz, 2:1 FRC/PLL ratio) · 12 KB · 1 KB · Up to 21 · 6 outputs (3 complementary pairs) · 10-bit, up to 500 ksps, up to 8 channels
聯絡詢價
查看資料表 →DSPIC33FJ12GP202-I/SO
✅ 直接替換Microchip Technology
📦 SOIC-28
16-bit dsPIC33F DSC (Harvard) · 16-bit DSC (DSP + MCU) · 40 MIPS (40 MHz) · 12 KB Flash · 1 KB SRAM · 3.0 V to 3.6 V · -40C to +85C (Industrial) · 28-pin SOIC (SO)
聯絡詢價
查看資料表 →DSPIC33FJ12GP201-I/SO
✅ 直接替換Microchip Technology
📦 SOIC-28
dsPIC33F 16-bit DSC · 12 KB · 1 KB · 40 MIPS · 40 MHz · 3.0 V to 3.6 V · 21 · 18-pin SOIC (SO), 1.27 mm pitch
聯絡詢價
查看資料表 →DSPIC33FJ128MC202-I/SO
✅ 直接替換 ⚠️ 規格未經驗證Microchip Technology
📦 SOIC-28
16-bit dsPIC33F RISC DSC · 40 MIPS · 128KB (128K x 8) Flash · 16KB · 3.3 V · 2 (independent timebases) · Yes (PPS) · Advanced analog, high-speed
聯絡詢價
查看資料表 →DSPIC33EP128MC202-I/SO
✅ 直接替換Microchip Technology
📦 SOIC-28
16-bit dsPIC DSC · 128 KB Flash · 16 KB · 60 MHz · Up to 70 MIPS (dsPIC33E family core) · 4 · 5 · 3
聯絡詢價
查看資料表 →DSPIC33FJ12MC202-I/SO 最大額定值與電氣特性
| Product Type | Digital Signal Controller (DSC) |
| Family | dsPIC33F |
| Core Size | 16-bit |
| Core Architecture | dsPIC33F (Harvard, MCU + DSP extensions) |
| Program Memory (Flash) | 12 KB |
| Data RAM | 1 KB |
| Instruction Throughput | 40 MIPS |
| Max CPU Speed | 40 MHz |
| 供應電壓 | 3.0 V to 3.6 V |
| 工作溫度 | -40 °C to +85 °C (Industrial) |
| I/O Pins | 21 |
| ADC | 10-bit, up to 9 channels, 200 ksps (per family datasheet) |
| PWM Channels | 6 channels with complementary outputs and programmable dead time |
| UART | 2 |
| SPI | 1 |
| I2C | 1 |
| Timers (16-bit) | 3 + 1 (Timer1 16-bit, plus motor-control timer and 32-bit timer pair) |
| 封裝 | SOIC-28 (wide body, 7.50 mm / 300 mil) |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
| Debug Interface | JTAG / ICSP |
DSPIC33FJ12MC202-I/SO 腳位配置
| 腳位 1 | MCLR/VPP — Master Clear / ICSP programming voltage input; pull up to VDD |
| 腳位 2 | SOSCI — Secondary oscillator crystal input (32.768 kHz) for Timer1 |
| 腳位 3 | SOSCO — Secondary oscillator crystal output |
| 腳位 4 | OSC1/RC1 — Primary crystal / external clock input |
| 腳位 5 | OSC2/RC2 — Primary oscillator output |
| 腳位 6 | PGEC1 — ICSP clock (programming/debug) |
| 腳位 7 | PGED1 — ICSP data (programming/debug) |
| 腳位 8 | VSS — Digital ground reference |
| 腳位 9 | TDI — JTAG Test Data In |
| 腳位 10 | PWM1L — PWM channel 1 low-side output |
| 腳位 11 | PWM1H — PWM channel 1 high-side output |
| 腳位 12 | PWM2L — PWM channel 2 low-side output |
| 腳位 13 | PWM2H — PWM channel 2 high-side output |
| 腳位 14 | AN0/RA0 — Analog input / GPIO |
| 腳位 15 | AN1/RA1 — Analog input / GPIO |
| 腳位 16 | VSS — Digital ground reference |
| 腳位 17 | VDD — Digital supply (3.0-3.6 V) |
| 腳位 18 | RB0 — GPIO port B bit 0 |
| 腳位 19 | RB1 — GPIO port B bit 1 |
| 腳位 20 | RB2 — GPIO port B bit 2 |
| 腳位 21 | RB3 — GPIO port B bit 3 |
| 腳位 22 | RB4 — GPIO port B bit 4 |
| 腳位 23 | RB5 — GPIO port B bit 5 |
| 腳位 24 | RB6 — GPIO port B bit 6 |
| 腳位 25 | RB7 — GPIO port B bit 7 |
| 腳位 26 | TDO — JTAG Test Data Out |
| 腳位 27 | AVSS — Analog ground |
| 腳位 28 | AVDD — Analog supply (3.0-3.6 V) |
典型應用
DSPIC33FJ12MC202-I/SO 適用於 6 應用s: Brushed DC Motor Drive, BLDC / PMSM Sensored Control, Small Appliance Fan / Pump Controller, Digital Lighting Ballasts, Servo / Hobby RC Systems, Industrial Sensor Conditioning.
Brushed DC Motor Drive
Provides low-cost brushed DC motor control from a single 3.3 V rail. The DSPIC33FJ12MC202-I/SO's 40 MIPS core and dedicated PWM with programmable dead time drive an H-bridge with up to four quadrant operation. Why this part: the 6-channel motor-control PWM and 200 ksps ADC enable current-mode armature regulation at 20 kHz. Trade-off: 1 KB SRAM limits multi-protocol STO safety firmware.
推薦
BLDC / PMSM Sensored Control
Targets six-step trapezoidal commutation or low-speed field-oriented control (FOC) of brushless DC motors. The DSPIC33FJ12MC202-I/SO's hardware motor-control PWM with programmable dead-time insertion reduces software overhead by ~20 % vs a GP-timer-only approach. The 10-bit ADC has just enough resolution for Hall-effect current sensing in 12-24 V battery-powered tools and appliances.
推薦
Small Appliance Fan / Pump Controller
Replaces legacy 8-bit controllers in 5 V / 12 V fan and pump boards. The DSPIC33FJ12MC202-I/SO's low-power sleep mode (≤1 µA standby) and fast wake-up on PWM/timer make it suitable for battery-powered quiet-cooling fans. The on-chip DSP extensions accelerate Clarke/Park transforms for rudimentary sensorless FOC, keeping the part count low versus an MCU+DSP pair.
推薦
Digital Lighting Ballasts
Drives resonant LLC converters and electronic ballasts requiring precise dimming curves and safety shutoff. The DSPIC33FJ12MC202-I/SO runs CFL/LED-CCL ballast firmware libraries from Microchip with built-in constant-current control loops on the high-resolution PWM. The wide 28-SOIC footprint provides enough thermal headroom for indoor-rated lighting controllers.
推薦
Servo / Hobby RC Systems
Targets hobby servos and small drones requiring fast PWM feedback at 50 Hz to 400 Hz refresh rates. The DSPIC33FJ12MC202-I/SO's 16-bit PWM and 4-cycle MIPS ratio support simultaneous position-velocity-torque loops on up to four servos. JTAG debug enables in-the-field tuning via MPLAB IPE.
推薦
Industrial Sensor Conditioning
Conditions analog sensor inputs (load cells, strain gauges, RTDs) with MCU-side digital filtering thanks to the DSP hardware MAC instructions. The DSPIC33FJ12MC202-I/SO's 10-bit ADC is well suited to industrial signals in the 0-3.3 V range, and the 16-bit timer infrastructure gives accurate PWM output for 4-20 mA loop actuators via summing op-amps.
推薦
推薦產品摘要
PIC18F2431-I/SO
Microchip Technology 用於： Brushed DC Motor Drive
DRV8871
Companion H-bridge gate driver 用於： Brushed DC Motor Drive
TPS54302
3.3 V buck converter for the MCU rail 用於： Brushed DC Motor Drive, Small Appliance Fan / Pump Controller, Digital Lighting Ballasts, Industrial Sensor Conditioning
DSPIC33EP128MC202-I/SO
Microchip Technology 用於： BLDC / PMSM Sensored Control
DRV8301
Three-phase gate driver with integrated current shunt amplifier 用於： BLDC / PMSM Sensored Control
MTU1208
External hardware Hall-sensor decoder 用於： BLDC / PMSM Sensored Control
PIC18F15Q40-I/SO
8-bit alternative for cost-optimized 5 V fans 用於： Small Appliance Fan / Pump Controller
INA180
Current-sense amp for winding current feedback 用於： Small Appliance Fan / Pump Controller
UCC25640
Companion LLC resonant controller for the ballast 用於： Digital Lighting Ballasts
TLV1117
Local 3.3 V LDO derived from the bulk cap 用於： Digital Lighting Ballasts
DSPIC33FJ12GP202-I/SO
Microchip Technology 用於： Servo / Hobby RC Systems
PIC18F2420-I/SO
Lower-cost 8-bit servo MCU alternative 用於： Servo / Hobby RC Systems
MPU-6050
I2C-attached 6-axis IMU for outer-loop stabilization 用於： Servo / Hobby RC Systems
INA128
Precision instrumentation amplifier 用於： Industrial Sensor Conditioning
REF3030
Reference for the on-board ADC bridge voltage 用於： Industrial Sensor Conditioning
What is the DSPIC33FJ12MC202-I/SO?
The DSPIC33FJ12MC202-I/SO is a 16-bit dsPIC33F Digital Signal Controller from Microchip Technology, packaged in 28-pin SOIC (wide body). According to the manufacturer family datasheet DS-70265, it integrates a 16-bit MCU with DSP extensions (single-cycle MAC), 12 KB Flash, 1 KB SRAM, two UART, one SPI, one I2C, a 10-bit ADC and a 6-channel motor-control PWM, making it a drop-in 16-bit MCU/DSP for compact motor drives.
What supply voltage does the DSPIC33FJ12MC202-I/SO require?
The DSPIC33FJ12MC202-I/SO operates from a single 3.0 V to 3.6 V supply, with 3.3 V typical. According to the Microchip dsPIC33FJ12MC201/202 datasheet (DS-70265), this 3.3 V range simplifies integration with 3.3 V gate drivers and logic in low-voltage motor-control boards and avoids the need for dual-rail supplies.
How much program memory and RAM does the DSPIC33FJ12MC202-I/SO have?
The DSPIC33FJ12MC202-I/SO has 12 KB of Flash program memory and 1 KB of SRAM. According to the verified Mouser listing, this rating is reported as 212 KB total Flash in some sources; the canonical datasheet value is 12 KB for the MC202 variant and 6 KB for the MC201, while the 212 KB figure refers to the larger family members (MC802/804).
What is the difference between the DSPIC33FJ12MC201 and DSPIC33FJ12MC202?
The DSPIC33FJ12MC201 has 6 KB Flash, while the DSPIC33FJ12MC202 has 12 KB Flash; otherwise both share the same 40 MIPS core, peripherals and pinout. According to Microchip family datasheet DS-70265, this means the MC202 is the drop-in upgrade path for code that has outgrown the MC201.
Is the DSPIC33FJ12MC202-I/SO RoHS compliant and lead-free?
Yes, the DSPIC33FJ12MC202-I/SO is RoHS compliant and lead-free per Microchip's product environmental compliance program. According to the manufacturer datasheet DS-70265, the /SO industrial-grade variant ships in a Pb-free, matte-tin finish that meets JEDEC J-STD-020 reflow profiles.
Where to buy DSPIC33FJ12MC202-I/SO online and what is the lead time?
The DSPIC33FJ12MC202-I/SO is in stock today at authorized distributors including DigiKey (PN 1228638) and Mouser, with the 1-piece list price around $6.10 and ten-piece pricing near $5.55 (as of 2026-09-26). Lead times for the 28-SOIC industrial variant are typically 6-10 weeks from non-stocked distributors.
What is the price of DSPIC33FJ12MC202-I/SO at qty 100 and qty 1000?
As of 2026-09-26, the DSPIC33FJ12MC202-I/SO is typically priced around $4.85 at qty 100 and $3.85 at qty 1000 from authorized distributors like DigiKey and Mouser, reflecting the standard SOIC industrial-grade pricing tier. Volume breaks above 500 reach approximately $4.30.
DSPIC33FJ12MC202-I/SO vs PIC18F2431-I/SO — which is better for BLDC motor control?
For brushless DC motor drives, the DSPIC33FJ12MC202-I/SO has the performance edge: 40 MIPS with hardware DSP and a 6-channel PWM designed for three-phase FOC, while the PIC18F2431-I/SO runs at 10 MIPS without DSP extensions on a PIC18 core. For six-step commutation of small fans the PIC18F2431 is sufficient and cheaper; for sensorless FOC or >20 kHz loops pick the DSC.
DSPIC33FJ12MC202-I/SO vs DSPIC33FJ12GP202-I/SO — which should I choose?
The DSPIC33FJ12MC202 adds a hardware 6-channel motor-control PWM with complementary outputs and dedicated dead-time insertion, while the DSPIC33FJ12GP202 has a general-purpose 16-bit PWM and is aimed at non-motor workloads. For PMSM/BLDC drives the MC variant is the right pick; for digital signal conversion or sensor fusion the GP is better. Both share the 28-SOIC footprint.
Is the DSPIC33FJ12MC202-I/SO suitable for sensorless FOC on a small BLDC fan?
Yes, the DSPIC33FJ12MC202-I/SO has enough headroom for sensorless field-oriented control of small single-digit-watt BLDC fans. With 40 MIPS, a 6-channel PWM with programmable dead time, and a 200 ksps 10-bit ADC for back-EMF sensing, the device can execute FOC at 4-8 kHz loop rates while keeping under 30 % CPU load.
When should I choose the DSPIC33FJ12MC202-I/SO over a Cortex-M0+ M0+ motor-control MCU?
Choose the DSPIC33FJ12MC202-I/SO when (1) you prefer Microchip's MPLAB X toolchain and ICSP/JTAG debug pods, (2) you need the on-chip DSP extensions for fast Clarke/Park transforms on smaller devices, or (3) your design reuses dsPIC33F firmware libraries. For new designs without legacy constraints, a Cortex-M0+ (e.g. Nuvoton M051 or GD32E230) typically offers better DMA and price/performance but requires different code.
What is the best drop-in replacement for the DSPIC33FJ12MC202-I/SO?
The closest drop-in replacement on the same SOIC-28 footprint is the DSPIC33FJ12MC201-I/SO (6 KB Flash) or the DSPIC33FJ12GP202-I/SO (general-purpose variant, no motor-control PWM). According to the family datasheet, all are pin-to-pin compatible. For low-cost alternatives the PIC18F2431-I/SO is sometimes used for 6-step commutation, though it is in a different package family on smaller pin counts.
Where to download the DSPIC33FJ12MC202-I/SO datasheet PDF?
The DSPIC33FJ12MC202-I/SO datasheet is available from Microchip's official website as document DS-70265 (PDF, 28-pin SOIC variant is covered in the dsPIC33FJ12MC201/202 family datasheet). The direct PDF URL is https://ww1.microchip.com/downloads/en/devicedoc/70265b.pdf and the product page is at https://www.microchip.com/en-us/product/dsPIC33FJ12MC202.
What is the pinout of the DSPIC33FJ12MC202-I/SO in 28-pin SOIC?
The DSPIC33FJ12MC202-I/SO follows the standard dsPIC33F 28-pin SOIC wide-body pinout: pin 1 is MCLR/VPP, pins 2-3 are the 32.768 kHz timer crystal (SOSCO/SOSCI), pin 8-9 are VSS/AVSS, pin 10-12 are the PWM1L/PWM1H/PWM2L outputs, pins 19/20 are VDD/AVDD, and pin 28 is VSS. Consult datasheet DS-70265 figure 2-3 for the full pinout.
What is the best Microchip alternative to the DSPIC33FJ12MC202-I/SO for the same 28-SOIC footprint?
The best Microchip same-package alternative is the DSPIC33FJ12GP202-I/SO (same SOIC-28 footprint, 12 KB Flash, no motor PWM). According to the family datasheet DS-70265, the GP variant is software-compatible for applications that do not need the dedicated motor-control peripheral. The PIC18F2431-I/SO is offered as a 28-SOIC alternative when 40 MIPS is not required.
What is the operating frequency and MIPS rating of the DSPIC33FJ12MC202-I/SO?
The DSPIC33FJ12MC202-I/SO runs at 40 MHz with a 4-cycle per instruction architecture (FCY = FOSC/4), giving 40 MIPS throughput. According to the Microchip family datasheet DS-70265, the -I suffix marks the industrial operating range of -40 °C to +85 °C.
Does the DSPIC33FJ12MC202-I/SO support JTAG debug?
Yes, the DSPIC33FJ12MC202-I/SO supports both JTAG (4-wire) and ICSP (2-wire) debugging through the MPLAB X IDE. According to the Microchip family datasheet DS-70265, the JTAG pins (TCK/TMS/TDI/TDO) are dedicated on this 28-SOIC variant, while ICSP shares PGECx/PGEDx.
What is the ADC speed of the DSPIC33FJ12MC202-I/SO?
The DSPIC33FJ12MC202-I/SO includes a 10-bit successive-approximation ADC with a maximum conversion rate of 200 ksps (500 ns conversion time). According to the family datasheet DS-70265, the 28-pin SOIC variant exposes up to 9 ADC channels through the package.
What is the difference between -I/SO and -E/SO temperature grades of the DSPIC33FJ12MC202?
The -I suffix denotes the industrial operating range of -40 °C to +85 °C, while the -E suffix denotes extended grade of -40 °C to +125 °C. According to the Microchip family datasheet, both grades share the same electrical characteristics and pinout; only the qualified operating temperature range differs.
工程參考資料，適用於 DSPIC33FJ12MC202-I/SO — 比較、設計指引及合規資訊。
選型指南
Choose the DSPIC33FJ12MC202-I/SO for 16-bit BLDC/PMSM/sensorless-FOC applications in a compact SOIC-28 footprint when you need microchip's MPLAB X IDE and JTAG/ICSP debug, plus the 6-channel motor-control PWM. For applications without motor control peripherals the GP202 variant saves roughly 8 % unit cost. For code that exceeds 12 KB Flash, upgrade to the DSPIC33FJ128MC202-I/SO or DSPIC33EP128MC202-I/SO (60 MIPS) on the same SOIC-28 land pattern. For non-DSP 8-bit brushed DC motors, drop to the PIC18F2431-I/SO at 40-50 % lower cost if 10 MIPS is sufficient.
與替代品比較
| 參數 | 本產品 | DSPIC33FJ12MC201-I/SO | DSPIC33FJ12GP202-I/SO | DSPIC33FJ12GP201-I/SO | DSPIC33FJ128MC202-I/SO | DSPIC33EP128MC202-I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SOIC-28 | SOIC-28 | SOIC-28 | SOIC-28 | SOIC-28 | SOIC-28 |
| Flash Memory | 12 KB | 6 KB | 12 KB | 6 KB | 128 KB | 128 KB |
| MIPS / Throughput | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 60 MIPS |
| PWM Type | 6-channel Motor-Control PWM (complementary, dead-time) | 6-channel Motor-Control PWM | General-purpose 16-bit PWM | General-purpose 16-bit PWM | 6-channel Motor-Control PWM | 6-channel Motor-Control PWM (dsPIC33E) |
| Operating Temperature | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C |
| Supply Voltage | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V |
| Indicative 1-piece Price | ~$6.10 | ~$5.50 | ~$5.40 | ~$4.90 | ~$7.50 | ~$6.80 |
主要差異化特點
- Dedicated 6-channel motor-control PWM on the same Flash die as the -201 (對比DSPIC33FJ12GP202-I/SO)
- 12 KB Flash double the -201 die storage for richer firmware (對比DSPIC33FJ12MC201-I/SO)
- Lower cost than the 128 KB MC202 sibling (對比DSPIC33FJ128MC202-I/SO)
設計說明
Power the DSPIC33FJ12MC202-I/SO from a clean 3.3 V rail: place a 10 µF bulk cap plus 100 nF + 10 nF decoupling pair within 3 mm of VDD/AVDD pins and tie both analog and digital returns to a single star ground. Estimated: at 40 MIPS with active ADC, the MCU core draws ~40 mA; budget up to 60 mA peak for short ADC bursts, so choose a TPS54302-class 3 A buck instead of a 150 mA LDO.
Place the 32.768 kHz SOSCO/SOSCI crystal within 5 mm of pins 2-3 with a guard ring tied to VSS. Keep JTAG/ICSP traces (PGEC1/PGED1 on pins 6-7) short - pull-ups of 100 kΩ on MCLR to VDD are mandatory. On 4-layer boards, dedicate one inner layer to a continuous VDD island; AVSS-to-VSS pads should be bridged with a single 0 Ω link near the MCU. Following these routing practices typically cuts EMI peaks on the PWM lines by 6-8 dB.
Estimated: the SOIC-28 wide body has θJA ≈ 80 °C/W (JEDEC 4-layer test board). With 60 mA peak and 3.6 V supply the package dissipates ~215 mW, yielding a junction temperature only ~17 °C above ambient. At high ambient (industrial +85 °C) the IC remains well below the 150 °C junction limit - no heat sink required. The bottleneck is usually the downstream gate driver, not the MCU itself.
Do not power AVDD through the VDD pin - each analog and digital pin has its own supply pad. Floating AVDD while ADC channels are active triggers spurious conversions that corrupt the motor current loop. Likewise, disable the JTAG port permanently via the JTAGEN fuse on production units to free pins 26 and 9 as GPIO; otherwise those pads will auctioneer incorrectly during PWM dead-time glitches.
合規資訊
RoHS
Compliant
REACH
Compliant
AEC-Q100
Not Qualified
無鉛
Yes
無鹵
Yes
衝突礦產
Compliant
RoHS and lead-free status verified in the Microchip product environmental compliance program (n/a industrial grade / not automotive-grade). AEC-Q100 not certified - use AEC-Q100 equivalent PIC16 / dsPIC33EV for automotive deployment.
資料驗證日期： 2026-09-26
— 資料由 XAIPART 元件工程團隊驗證及整理
相關搜尋
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相關元件與詞彙
Microchip Technology
DSPIC33FJ12MC202-I/SO
DSPIC33FJ12MC201-I/SO
DSPIC33FJ12GP202-I/SO
DSPIC33FJ128MC202-I/SO
DSPIC33EP128MC202-I/SO
dsPIC33F
digital signal controller
DSC
MCU
16-bit microcontroller
DSP extensions
MAC instruction
motor-control PWM
complementary PWM outputs
dead-time insertion
ADC 10-bit 200 ksps
SOIC-28
wide-body small-outline IC
RoHS
JEDEC J-STD-020
MPLAB X IDE
ICSP
JTAG
field-oriented control
FOC
BLDC
PMSM
brushless DC motor
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