One-Chip Smart SBC for Edge Nodes: IM904DCLBQT

MCU, LDO, and CAN PHY triple integration; AEC-Q100 Grade 1; lower cost, higher efficiency.

The IM904DC series is Immorta's highly-integrated automotive-grade chip designed for minimalist, compact automotive edge intelligent nodes. As a "three-in-one" solution, it integrates a 48 MHz Cortex-M0+ processor, a wide-input LDO (6V to 40V), and a CAN physical-layer transceiver in a single extremely small package (QFN32 5x5 mm). Beyond integrated communication and power, the chip supports 12 capacitive-touch detection channels and dedicated motor-control peripherals, making it especially suitable for space-constrained applications such as touch door handles, standalone sensors, and low-speed alert systems, greatly reducing external component count and optimizing system BOM cost.

Main Features

• AEC-Q100 Grade 1, operating temperature -40℃ to 125℃
• 32-bit Arm® Cortex®-M0+ core, 48 MHz
• One high-voltage LDO, 6V~40V, up to 200 mA output
• One CAN PHY compliant with ISO 11898-2:2016, CAN FD up to 5 Mbit/s
• Debug-port protection and true random number generator
• 12-bit DAC with external output
• 128 KB Flash, 16 KB SRAM

Highlights

• High integration: one chip replaces many, simplifying design and reducing BOM and PCB area.
• High reliability: fewer external components and solder joints enhance system stability.
• Excellent EMC: integrated CAN physical layer meets EMC requirements for stable communication.
• Ultra-small package: QFN-32, only 5×5 mm, meeting compact-design needs.
• Capacitive sensing: 12-channel hardware capacitive touch with waterproof support.
• Information security: TRNG compliant with NIST SP800-90, plus Debug-port protection.

Applications

Specifications

• Compliant with AEC-Q100 Grade 1

• Integrated high-voltage LDO, input voltage: 6 V ~ 40 V
• Ambient temperature: -40 ℃ ~ +125 ℃

• Integrated high-voltage LDO
• Built-in integrated CAN PHY transceiver

• 32-bit Arm® Cortex®-M0+ core
• Configurable Nested Vectored Interrupt Controller (NVIC)
• CPU frequency 48 MHz
• SysTick

• Integrated PMC supports STOP and RUN modes
• GPIO edge-wakeup support
• STOP-mode current ≤ 40 µA at 25 ℃

• External high-speed clock (XOSC): 4 MHz ~ 30 MHz
• Internal high-speed clock (HFOSC): 48 MHz
• Internal low-speed clock (LPOSC): 32 kHz

• PFlash up to 128 KB with ECC
• RAM up to 16 KB with Hardware Parity

• Up to 22 GPIO pins with edge-interrupt support
• Non-Maskable Interrupt (NMI) support

• QFN32

• Unique chip identifier (UUID)
• Clock monitor
• Low-voltage monitor and low-voltage reset (LVR)
• Independent-clock watchdog (WDG)

• Cyclic Redundancy Check module (CRC)
• Serial Wire Debug interface (SWD)
• 4-channel DMA
• HAU (Hardware Acceleration Unit) accelerates complex operations (division / square root / RMS / trigonometric functions, etc.)

• Up to 2 UART modules with DMA; both support software LIN
• Up to 1 I2C module with DMA
• Up to 2 SPI modules with DMA
• 1 CAN-FD module, compatible with CAN 2.0B

• 1× 12-channel 12-bit 1 Msps SAR ADC
• 1× 12-channel capacitive-touch (PTC) module
• 1× 4-channel CMP (analog comparator)
• 1× 12-bit DAC for comparator and external output
• Built-in temperature sensor

• 1× 8-channel SPWM module
• 1× 4-channel IPWM module
• 2× 32-bit timers
• 1× 32-bit RTC

Product Models