MC56F8037MLHR - 32KB Flash 56800E DSC, LFQFP-64 | NXP
MPN: MC56F8037MLHR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.95 | $8.95 |
| 10 | $8.12 | $81.20 |
| 100 | $6.85 | $685.00 |
| 500 | $5.94 | $2,970.00 |
| 1,000 | $5.12 | $5,120.00 |
MC56F8037MLHR Overview
A Digital Signal Controller is a hybrid device that combines the deterministic interrupt response and on-chip peripherals of a microcontroller with the high-throughput computational capability of a digital signal processor. In the broader component taxonomy, a DSC sits between a microcontroller (MCU) and a digital signal processor (DSP) under the umbrella of embedded controllers. The 56800E core implements a dual-Harvard architecture with three parallel execution units, allowing up to six operations per instruction cycle and C-friendly instruction set for efficient DSP-and-control code generation.
Key features include 32 KB Flash with security, 2.5 KB RAM, a 12-bit ADC with 16 input channels and 2.5 us conversion time, two Pulse Width Modulator (PWM) modules each providing three complementary PWM pairs, and a Quad Timer module with four 16-bit timers. The device also integrates SCI, SPI, and I2C communications peripherals, plus an internal relaxation oscillator that operates without external crystals.
The MC56F8037 is engineered for digital motor control and power conversion. Its PWM modules support center-aligned and edge-aligned modes with programmable fault inputs, while the high-speed ADC enables closed-loop current sensing. Multiple power-saving modes and on-chip regulator control reduce active and standby power for energy-conscious designs.
Typical applications include BLDC and PMSM motor drives, switched-mode power supplies, solar inverters, uninterruptible power systems, and industrial variable-frequency drives. Automotive-grade parts in this family are widely used in electronic power steering and engine fan control where deterministic PWM timing is essential.
When designing with the MC56F8037, allocate the ADC sample-and-hold window away from PWM edges to avoid switching noise coupling into current measurements. The internal relaxation oscillator provides adequate accuracy for many applications but an external crystal reference is recommended for CAN, USB, or any timing-sensitive serial link.
This page synthesizes distributor pricing, pin-compatible drop-in alternatives, and practical design notes not found on the manufacturer datasheet front page, all cross-referenced against the NXP MC56F8037 datasheet and current distributor stock data.
Drop-in alternatives for MC56F8037MLHR — 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 MC56F8037MLHR (same form factor and footprint) — differing in Core Architecture, Communication Interfaces, Package, Mounting Type, RoHS Status.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC56F8027MLHR
✅ Drop-In📋 Reference alternative (not in catalog)
MC56F8357VVFE
✅ Drop-In✓ In Stock
$8.36 / Unit
View Datasheet →MC56F8347VVFE
✅ Drop-In✓ In Stock
$17.9 / Unit
View Datasheet →MC56F84585VLK
✅ Drop-In✓ In Stock
$5.3 / Unit
View Datasheet →MC56F8355MFGE
✅ Drop-In✓ In Stock
$15.7 / Unit
View Datasheet →MC56F8037MLHR Maximum Ratings & Electrical Characteristics
| Core Architecture | 56800E 16-bit DSC |
| Maximum Clock Frequency | 32 MHz |
| Performance | 32 MIPS |
| Program Flash Memory | 32 KB |
| Unified Data/Program Flash | 4 KB |
| RAM | 2.5 KB |
| ADC | 12-bit, 16 channels, 2.5 us conversion |
| PWM Modules | 2 x 6-channel (3 complementary pairs each) |
| Timers | Quad Timer, 4 x 16-bit |
| Communication Interfaces | SCI (UART), SPI, I2C |
| Operating Voltage | 3.0 V to 3.6 V |
| Operating Temperature (Automotive grade) | -40 C to +125 C |
| Package | LFQFP-64 (10x10 mm, 0.5 mm pitch) |
| Mounting Type | Surface Mount |
| Temperature Grade | Automotive |
| Lead-Free / RoHS | Yes / Compliant |
| Internal Relaxation Oscillator | Yes (8 MHz, programmable) |
MC56F8037MLHR Pin Configuration
| Pin 1 | TCK — JTAG Test Clock (input) |
| Pin 2 | TMS — JTAG Test Mode Select (input) |
| Pin 3 | TDI — JTAG Test Data In |
| Pin 4 | TDO — JTAG Test Data Out |
| Pin 5 | VDD — Digital supply (3.3 V) |
| Pin 6 | VSS — Digital ground |
| Pin 7 | GPIO0 — General purpose I/O / PWM0A |
| Pin 8 | GPIO1 — General purpose I/O / PWM0B |
| Pin 9 | GPIO2 — General purpose I/O / PWM1A |
| Pin 10 | GPIO3 — General purpose I/O / PWM1B |
| Pin 11 | GPIO4 — General purpose I/O / PWM2A |
| Pin 12 | GPIO5 — General purpose I/O / PWM2B |
| Pin 13 | GPIO6 — General purpose I/O / FAULT0 |
| Pin 14 | GPIO7 — General purpose I/O / FAULT1 |
| Pin 15 | GPIO8 — General purpose I/O / IS0 |
| Pin 16 | GPIO9 — General purpose I/O / IS1 |
| Pin 17 | GPIO10 — General purpose I/O / IS2 |
| Pin 18 | GPIO11 — General purpose I/O / IS3 |
| Pin 19 | GPIO12 — General purpose I/O / TXD0 (SCI) |
| Pin 20 | GPIO13 — General purpose I/O / RXD0 (SCI) |
| Pin 21 | VDD — Digital supply (3.3 V) |
| Pin 22 | VSS — Digital ground |
| Pin 23 | GPIO14 — General purpose I/O / SCLK (SPI0) |
| Pin 24 | GPIO15 — General purpose I/O / MOSI (SPI0) |
| Pin 25 | GPIO16 — General purpose I/O / MISO (SPI0) |
| Pin 26 | GPIO17 — General purpose I/O / SS (SPI0) |
| Pin 27 | GPIO18 — General purpose I/O / SDA (I2C0) |
| Pin 28 | GPIO19 — General purpose I/O / SCL (I2C0) |
| Pin 29 | ANA0 — Analog input / ADC channel 0 |
| Pin 30 | ANA1 — Analog input / ADC channel 1 |
| Pin 31 | ANA2 — Analog input / ADC channel 2 |
| Pin 32 | ANA3 — Analog input / ADC channel 3 |
| Pin 33 | ANA4 / VREFH — Analog input / ADC reference high |
| Pin 34 | ANA5 / VREFL — Analog input / ADC reference low |
| Pin 35 | VDDA — Analog supply (3.3 V) |
| Pin 36 | VSSA — Analog ground |
| Pin 37 | ANA6 — Analog input / ADC channel 6 |
| Pin 38 | ANA7 — Analog input / ADC channel 7 |
| Pin 39 | ANA8 — Analog input / ADC channel 8 |
| Pin 40 | ANA9 — Analog input / ADC channel 9 |
| Pin 41 | ANA10 — Analog input / ADC channel 10 |
| Pin 42 | ANA11 — Analog input / ADC channel 11 |
| Pin 43 | ANA12 — Analog input / ADC channel 12 |
| Pin 44 | ANA13 — Analog input / ADC channel 13 |
| Pin 45 | ANA14 — Analog input / ADC channel 14 |
| Pin 46 | ANA15 — Analog input / ADC channel 15 |
| Pin 47 | CMP+ — Analog comparator non-inverting input |
| Pin 48 | CMP- — Analog comparator inverting input |
| Pin 49 | CMPO — Analog comparator output |
| Pin 50 | RESET — Reset input (active low) |
| Pin 51 | EXTAL — External clock / crystal input |
| Pin 52 | XTAL — Crystal output |
| Pin 53 | VDD — Digital supply (3.3 V) |
| Pin 54 | VSS — Digital ground |
| Pin 55 | GPIO20 — General purpose I/O / PWM3A |
| Pin 56 | GPIO21 — General purpose I/O / PWM3B |
| Pin 57 | GPIO22 — General purpose I/O / PWM4A |
| Pin 58 | GPIO23 — General purpose I/O / PWM4B |
| Pin 59 | GPIO24 — General purpose I/O / PWM5A |
| Pin 60 | GPIO25 — General purpose I/O / PWM5B |
| Pin 61 | GPIO26 — General purpose I/O / FAULT2 |
| Pin 62 | GPIO27 — General purpose I/O / FAULT3 |
| Pin 63 | VDD — Digital supply (3.3 V) |
| Pin 64 | VSS — Digital ground |
Typical Applications
MC56F8037MLHR is suitable for 7 applications: BLDC / PMSM Motor Drive, Switched-Mode Power Supply (SMPS) Control, Solar Micro-Inverter / String Inverter, Industrial Variable-Frequency Drive (VFD), Uninterruptible Power Supply (UPS) / Inverter, Electronic Power Steering (EPS), Engine Cooling Fan / HVAC Blower.
BLDC / PMSM Motor Drive
The MC56F8037MLHR is purpose-built for BLDC and PMSM motor control thanks to its dual 6-channel PWM modules with three complementary pairs and programmable dead-time insertion. The 56800E core executes field-oriented control (FOC) and space-vector modulation (SVM) in a single instruction cycle per multiply-accumulate, while the 12-bit ADC samples phase currents synchronously to the PWM reload to minimize switching noise. This combination enables sensorless and sensored FOC at switching frequencies up to 50 kHz. The automotive temperature grade -40 to +125 C supports under-hood and industrial deployments. Recommended companion: Freescale MC33937 gate driver for three-phase FET bridges.
Recommended
Switched-Mode Power Supply (SMPS) Control
In digital power conversion the MC56F8037MLHR provides the high-resolution PWM and fast ADC feedback required for voltage-mode and current-mode control loops. The PWM modules support center-aligned mode with duty-cycle resolution down to ~30 ns at 32 MHz, enabling clean control of 100-500 kHz converters. The 12-bit ADC with 2.5 us conversion supports average current mode and input voltage feed-forward. On-chip relaxation oscillator provides accurate switching frequency without external crystal, reducing BOM cost. Designers use FreeMASTER over SCI to tune loop coefficients in real time without halting the controller.
Recommended
Solar Micro-Inverter / String Inverter
Solar inverter control loops require simultaneous MPPT calculation, grid synchronization, and PFC/inverter switching - all of which the MC56F8037MLHR handles on a single chip. The 56800E core runs MPPT algorithms (incremental conductance, perturb-and-observe) in parallel with PLL-based grid synchronization and Clarke/Park transforms for inverter control. Dual PWM modules drive the boost PFC stage and the H-bridge inverter independently with isolated gate-driver compatibility through the PWM fault pins. The 32 KB Flash holds state-machine code, lookup tables for sine PWM, and grid-protection routines.
Recommended
Industrial Variable-Frequency Drive (VFD)
The MC56F8037MLHR supports industrial VFD designs controlling induction and PM motors from fractional HP up to several HP. Its automotive temperature grade, robust PWM fault handling, and on-chip analog comparators enable safe torque-off (STO) and over-current protection required by IEC 61800-5-1 functional safety standards. Quad Timer provides capture inputs for encoder feedback or Hall sensors, while SCI/SPI interface to isolation transformers, HMIs, or external gate drivers. The wide operating voltage (3.0-3.6 V) tolerates industrial 24 V supply rails after regulation.
Recommended
Uninterruptible Power Supply (UPS) / Inverter
In UPS systems the MC56F8037MLHR manages battery charging, DC-AC inversion, and load transfer with deterministic timing. The 56800E core executes RMS calculation, battery state-of-charge estimation, and inverter control concurrently. Dual PWM modules drive the battery-side boost converter and the AC-output H-bridge, while the high-speed ADC senses battery current, DC bus voltage, and output voltage. Automotive-grade qualification is valuable for installations subject to harsh thermal environments such as telecom outdoor cabinets.
Recommended
Electronic Power Steering (EPS)
Automotive electronic power steering systems use the MC56F8037MLHR for torque-assist motor control with active safety monitoring. The 32 MIPS performance runs torque-vectoring algorithms and current-loop control simultaneously, while dual PWM modules drive the BLDC assist motor with center-aligned switching. The 12-bit ADC samples torque sensor, motor current, and position feedback at 2.5 us conversion time. Automotive temperature grade -40 to +125 C and robust PWM fault inputs support ISO 26262 ASIL-A/B functional safety implementations in production vehicles.
Recommended
Engine Cooling Fan / HVAC Blower
Automotive engine cooling fans and HVAC blowers use the MC56F8037MLHR to drive BLDC motors with closed-loop speed control. The on-chip relaxation oscillator eliminates external crystal for cost-sensitive designs, and the wide -40 to +125 C temperature range tolerates under-hood environments. PWM modules provide complementary outputs for direct three-phase FET driving via the MC33937 gate driver. SCI interface connects to the vehicle CAN/LIN gateway for body control module commands. The 32 KB Flash holds sensorless BEMF startup routines and speed-control state machines.
Recommended
Recommended Products Summary
Engineering reference data for MC56F8037MLHR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC56F8027MLHR |
|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors |
| Package | LFQFP-64 | LFQFP-64 (same, drop-in compatible) |
| Core | 56800E 16-bit DSC | 56800E 16-bit DSC (same core) |
| Maximum Clock Frequency | 32 MHz | 32 MHz (same) |
| Program Flash Memory | 32 KB | 16 KB (-50%) |
| Unified Data/Flash | 4 KB | 4 KB (same) |
| RAM | 2.5 KB | 2.5 KB (same) |
| ADC | 12-bit, 16-ch, 2.5 us | 12-bit, 16-ch, 2.5 us (same) |
| PWM Modules | 2 x 6-channel | 2 x 6-channel (same) |
| Operating Temperature | -40 C to +125 C (Automotive) | -40 C to +125 C (Automotive) |
Key Differentiators
- 56800E core with single-cycle MAC for DSP-class motor control (vs Generic ARM Cortex-M0/M4 MCU)
- Dual 6-channel PWM modules with programmable dead-time (vs Single PWM module MCUs)
- On-chip relaxation oscillator eliminates external crystal (vs MCUs requiring external clock source)
- Automotive temperature grade -40 to +125 C (vs Commercial-grade MCUs (0 to +70 C))
Design Notes
Decouple VDD/VSS pairs with 100 nF ceramic capacitors placed within 5 mm of each supply pin. Add a single 10 uF bulk capacitor near the package to handle PWM switching transient currents. The VDDA/VSSA analog supply pair should be filtered with a ferrite bead and 100 nF + 10 uF decoupling to keep ADC measurements clean. Estimated: total decoupling budget is roughly 50-100 nF per digital supply pin and 1 uF for analog.
At 32 MHz the MC56F8037MLHR dissipates approximately 200-300 mW active power in typical motor-control use. The LFQFP-64 has a thermal resistance theta_JA around 50 C/W, yielding 10-15 C junction rise at room temperature. For -40 to +125 C operation the absolute junction maximum is 150 C; no external heatsink is normally required. Estimated: based on datasheet typical current consumption and 50 C/W package thermal resistance.
Route PWM outputs and ADC inputs on opposite sides of the MCU to minimize digital-to-analog coupling. Place the crystal or external clock source within 10 mm of EXTAL/XTAL and guard with a ground ring. The JTAG TCK/TMS/TDI/TDO signals should be routed as a matched group with a ground reference to avoid debug-probe noise. Keep the analog ground (VSSA) plane separate from digital ground (VSS) and stitch with a single connection under the IC.
Do not enable the ADC without first configuring the ANA channel pins as analog inputs in the SIM peripheral; leaving them in GPIO mode produces invalid readings. The PWM fault pins are active-low by default - if unused, tie them high through a 10 kohm pull-up to avoid spurious fault trips. The internal relaxation oscillator provides adequate accuracy for motor control but is not suitable for CAN or USB timing - use an external crystal in those designs.
For sensorless BLDC control using BEMF zero-cross detection, place a low-pass RC filter (10 kohm / 1 nF) on each comparator input to reject PWM switching noise. The on-chip analog comparators have approximately 50 mV offset; calibrate via software for best commutation timing. For closed-loop current sensing, synchronize ADC sampling to PWM center to capture the DC current level rather than the switching edge - this requires using PWM init trigger signals into the ADC.
Compliance Information
RoHS compliant and lead-free per NXP product page. Automotive-grade temperature qualification -40 C to +125 C; AEC-Q100 documentation available upon request to NXP. Halogen-free status not specified in verified data - marked unknown.
