STMicroelectronics

SPC5668E - 32-bit MCU for Automotive Powertrain | STMicroelectronics

Name: SPC5668E
Brand: STMicroelectronics
Price: 25.50 USD
Availability: InStock

MPN: SPC5668E ✓ Active

In Stock (99,999) Ships in 1-3 business days

3.0 V to 5.5 V Vdss LQFP-176 Package 120 MHz Speed 2 MB Memory

$25.5 USD / Unit

MOQ: 1 |

Volume Pricing

Qty	Unit Price	Extended
1	$25.5	$25.50
10	$23.2	$232.00
100	$20.8	$2,080.00
500	$18.5	$9,250.00
1,000	$16.9	$16,900.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for SPC5668E — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

SPC5668G

✅ Drop-In

📦 LQFP-176

Same package and pinout, likely extended temperature grade

📋 Reference alternative (not in catalog)

SPC5668E7

✅ Drop-In

📦 LQFP-176

Variant with different ordering code, same silicon

📋 Reference alternative (not in catalog)

MPC5644A

⚡ Same Package

📦 LQFP-176

Different pinout, requires PCB redesign

📋 Reference alternative (not in catalog)

SPC5674F

⚡ Same Package

📦 LQFP-176

Higher performance, different pinout

📋 Reference alternative (not in catalog)

SPC5668E Maximum Ratings & Electrical Characteristics

Core	e200z4 (Power Architecture)
Core Frequency	120 MHz
Flash Memory	2 MB
RAM	192 KB
Supply Voltage	3.0 V to 5.5 V
Operating Temperature	-40°C to +125°C
Package	LQFP-176
Mounting Type	Surface Mount
Number of I/O Pins	144
ADC Resolution	10-bit
ADC Channels	32
Communication Interfaces	CAN, LIN, FlexRay, SPI, I2C
Timer Modules	eMIOS, PIT
DMA Channels	32
AEC-Q100	Qualified
RoHS	Compliant

SPC5668E Pin Configuration

Pin 1	VDD — Digital power supply
Pin 2	VSS — Digital ground
Pin 3	VDDA — Analog power supply
Pin 4	VSSA — Analog ground
Pin 5	XTAL — Crystal oscillator input
Pin 6	EXTAL — Crystal oscillator output
Pin 7	RESET — Reset input
Pin 8	JTAG_TMS — JTAG test mode select
Pin 9	JTAG_TCK — JTAG clock
Pin 10	CAN0_TX — CAN0 transmit
Pin 11	CAN0_RX — CAN0 receive
Pin 12	LIN0_TX — LIN0 transmit
Pin 13	LIN0_RX — LIN0 receive
Pin 14	ADC0_CH0 — ADC channel 0
Pin 15	ADC0_CH1 — ADC channel 1
Pin 16	PWM0 — PWM output 0

Safe Operating Area (SOA) & Thermal Characteristics

No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.

Typical Applications

SPC5668E is suitable for 6 applications: Engine Control Unit (ECU), Transmission Control Module, Electric Power Steering (EPS), Hybrid Vehicle Control, Industrial Motor Control, Body Control Module.

🚗

Engine Control Unit (ECU)

The SPC5668E is ideal for engine control units due to its high-speed e200 core (120 MHz) and 2 MB flash, enabling real-time fuel injection and ignition timing. Its advanced timer modules (eMIOS) provide precise PWM generation for injectors and spark coils. The device's CAN and LIN interfaces allow communication with sensors and other ECUs. In a typical ECU, the SPC5668E reads crankshaft and camshaft position sensors via its 10-bit ADC, processes the data to determine optimal ignition timing, and outputs control signals to ignition coils. The dual-core architecture enhances safety by enabling lockstep operation for fault detection. Compared to lower-performance MCUs, the SPC5668E's processing power ensures minimal latency in control loops, improving engine efficiency and reducing emissions.

Recommended

L9779 (Ignition driver) TLE6240 (Power switch)

🚗

Transmission Control Module

The SPC5668E is well-suited for transmission control modules, where precise timing and reliability are critical. Its 120 MHz core and 192 KB RAM allow complex shift algorithms to run smoothly. The device's FlexRay interface supports high-speed communication with other vehicle systems, essential for modern automatic transmissions. The SPC5668E's ADC channels monitor hydraulic pressure sensors, while its PWM outputs control solenoid valves. The wide operating temperature range (-40°C to +125°C) ensures reliable operation under hood. The dual-core lockstep feature provides redundancy for safety-critical shift decisions. Compared to alternatives, the SPC5668E's combination of performance and automotive-grade robustness makes it a preferred choice for transmission control.

Recommended

VN7040 (High-side driver) L9352 (Solenoid driver)

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Electric Power Steering (EPS)

The SPC5668E is used in electric power steering systems, where real-time motor control is essential. Its eMIOS timer modules generate high-frequency PWM signals for the steering motor, while the ADC reads torque and angle sensors. The device's CAN interface communicates with the vehicle's central control unit. The SPC5668E's fast interrupt response ensures smooth and responsive steering assistance. The 2 MB flash allows storage of multiple tuning maps for different driving conditions. The device's low-power modes help reduce energy consumption when steering is not in use. Compared to general-purpose MCUs, the SPC5668E's automotive-grade reliability and performance make it ideal for EPS applications.

Recommended

VNH5019 (Motor driver) TLE4964 (Hall sensor)

🚗

Hybrid Vehicle Control

The SPC5668E is suitable for hybrid vehicle control systems, which require coordination between the internal combustion engine and electric motor. Its dual-core architecture allows simultaneous processing of engine and motor control algorithms. The FlexRay interface enables high-speed communication with battery management and motor controllers. The device's 10-bit ADC monitors battery voltage and current, while its PWM outputs control the inverter. The SPC5668E's 2 MB flash provides ample space for complex energy management algorithms. The wide temperature range and AEC-Q100 qualification ensure reliable operation in the demanding automotive environment. Compared to less powerful MCUs, the SPC5668E's performance is essential for real-time hybrid control.

Recommended

L9907 (Motor control) BTS7002 (Battery switch)

🏭

Industrial Motor Control

The SPC5668E is also used in industrial motor control applications, such as robotics and conveyor systems. Its high-speed PWM generation and ADC capabilities enable precise speed and torque control. The device's CAN interface allows integration into industrial networks. The SPC5668E's robust design and wide temperature range make it suitable for harsh industrial environments. The 2 MB flash allows storage of complex control algorithms, and the 192 KB RAM supports real-time data processing. Compared to industrial MCUs, the SPC5668E offers automotive-grade reliability at a competitive price, making it a cost-effective choice for high-performance motor control.

Recommended

L6235 (Motor driver) TLE6209 (H-bridge)

🚗

Body Control Module

The SPC5668E can be used in body control modules, managing functions like lighting, windows, and central locking. Its multiple CAN and LIN interfaces allow communication with various body components. The device's low-power modes help reduce battery drain when the vehicle is off. The 10-bit ADC monitors switch inputs, while the PWM outputs control lighting intensity. The SPC5668E's 2 MB flash provides ample storage for body control software. The wide temperature range and AEC-Q100 qualification ensure reliable operation. Compared to simpler MCUs, the SPC5668E offers more processing power and connectivity, making it suitable for advanced body control systems.

Recommended

VNQ7004 (High-side driver) L9826 (Low-side driver)

Recommended Products Summary

L9779 Ignition driver Used in: Engine Control Unit (ECU) TLE6240 Power switch Used in: Engine Control Unit (ECU) VN7040 High-side driver Used in: Transmission Control Module L9352 Solenoid driver Used in: Transmission Control Module VNH5019 Motor driver Used in: Electric Power Steering (EPS) TLE4964 Hall sensor Used in: Electric Power Steering (EPS) L9907 Motor control Used in: Hybrid Vehicle Control BTS7002 Battery switch Used in: Hybrid Vehicle Control L6235 Motor driver Used in: Industrial Motor Control TLE6209 H-bridge Used in: Industrial Motor Control VNQ7004 High-side driver Used in: Body Control Module L9826 Low-side driver Used in: Body Control Module

What is the SPC5668E?

The SPC5668E is a 32-bit automotive microcontroller from STMicroelectronics, based on the Power Architecture e200 core. It operates at up to 120 MHz and features 2 MB flash and 192 KB RAM, designed for engine control and other real-time automotive applications.

What is the operating voltage of SPC5668E?

The SPC5668E operates from 3.0V to 5.5V supply voltage, making it compatible with automotive battery systems. According to the ST datasheet, the device requires a stable supply with proper decoupling.

What is the maximum clock frequency of SPC5668E?

The SPC5668E has a maximum core frequency of 120 MHz, enabling high-speed processing for real-time control loops in automotive ECUs.

How much flash memory does SPC5668E have?

The SPC5668E integrates 2 MB of flash memory with ECC, providing ample storage for complex control algorithms and calibration data.

What is the difference between SPC5668E and SPC5668G?

The SPC5668E and SPC5668G are variants in the same family; the 'G' typically indicates a different package or temperature grade. Both share the same core and memory, but the SPC5668G may have extended temperature range or different pinout. Verify the specific datasheet for exact differences.

Is SPC5668E suitable for engine control units?

Yes, the SPC5668E is specifically designed for engine control units (ECUs). Its high-speed e200 core, 2 MB flash, and advanced timer modules (eMIOS) enable precise fuel injection and ignition timing control.

What communication interfaces does SPC5668E support?

The SPC5668E supports CAN, LIN, FlexRay, SPI, and I2C interfaces, allowing it to communicate with various sensors, actuators, and other ECUs in a vehicle network.

What is the package type of SPC5668E?

The SPC5668E is available in a 176-pin LQFP package (surface mount). Some variants may be offered in BGA packages; check the datasheet for exact options.

Is SPC5668E AEC-Q100 qualified?

Yes, the SPC5668E is AEC-Q100 qualified, making it suitable for automotive applications that require high reliability and extended temperature ranges.

What is the price of SPC5668E?

As of 2026-08-12, the SPC5668E is priced at approximately $25.50 for single-unit quantities, with volume pricing dropping to $16.90 at 1000 units, based on distributor data.

Where can I buy SPC5668E?

The SPC5668E is available from major distributors such as DigiKey and Mouser. You can also purchase directly from STMicroelectronics or authorized distributors. Check stock availability on their websites.

What is the lead time for SPC5668E?

Typical lead time for SPC5668E is 8-12 weeks from order, depending on distributor stock and order quantity. For urgent needs, check current stock levels at DigiKey or Mouser.

Can SPC5668E be used in industrial applications?

Yes, while designed for automotive, the SPC5668E's robust features and wide temperature range make it suitable for industrial control applications such as motor drives and robotics.

What is the best drop-in replacement for SPC5668E?

The best drop-in replacement for SPC5668E is the SPC5668G from STMicroelectronics, which shares the same package and pinout. Cross-brand alternatives like the NXP MPC5644A may be functionally similar but require PCB changes due to different pinouts.

Is SPC5668E the same as SPC5668G?

No, SPC5668E and SPC5668G are different variants. They share the same core and memory, but may differ in package, temperature grade, or specific peripheral configurations. Always verify the datasheet for exact differences.

What are the key specifications of SPC5668E that engineers should know?

Key specifications include a 120 MHz e200z4 core, 2 MB flash, 192 KB RAM, 3.0-5.5V supply, -40°C to +125°C operating range, 176-pin LQFP package, 10-bit ADC with 32 channels, and CAN/LIN/FlexRay/SPI/I2C interfaces. These make it ideal for real-time automotive control.

Hey Google, what can replace SPC5668E?

The SPC5668E can be replaced by the SPC5668G (same brand, drop-in) or cross-brand equivalents like the NXP MPC5644A, but the NXP part has a different pinout and requires PCB redesign. For a true drop-in, choose the SPC5668G.

What is the best NXP equivalent for SPC5668E?

The NXP MPC5644A is a functional equivalent to the SPC5668E, offering similar performance and peripherals, but it is not pin-compatible. It requires a different PCB layout, so it is not a drop-in replacement.

Where can I download the SPC5668E datasheet PDF?

You can download the SPC5668E datasheet PDF from the STMicroelectronics website at https://www.st.com/resource/en/datasheet/spc5668e.pdf. It is also available on distributor sites like DigiKey.

Where can I find the SPC5668E pinout?

The SPC5668E pinout is detailed in the datasheet, available from STMicroelectronics. The 176-pin LQFP package pin assignments are listed in the pinout section of the datasheet.

Engineering reference data for SPC5668E — comparison, design guidance, and compliance information.

Selection Guide

Choose the SPC5668E when you need a cost-effective, automotive-grade MCU with 120 MHz performance and 2 MB flash for engine control or similar real-time applications. If you require higher performance (150 MHz) and 12-bit ADC, consider the NXP MPC5644A, but be prepared for PCB redesign due to different pinout. For applications needing more memory (4 MB) and higher speed (180 MHz), the SPC5674F is a better fit, though at a higher cost. If you need a drop-in replacement with extended temperature range, select the SPC5668G. The SPC5668E is ideal for projects where safety (lockstep) and cost are priorities.

Comparison with Alternatives

Parameter	This Product	SPC5668G	MPC5644A	SPC5674F
Package	LQFP-176	LQFP-176	LQFP-176	LQFP-176
Brand	STMicroelectronics	STMicroelectronics	NXP Semiconductors	STMicroelectronics
Core Frequency	120 MHz	120 MHz	150 MHz	180 MHz
Flash Memory	2 MB	2 MB	2 MB	4 MB
RAM	192 KB	192 KB	256 KB	256 KB
Supply Voltage	3.0V - 5.5V	3.0V - 5.5V	3.0V - 5.5V	3.0V - 5.5V
ADC Resolution	10-bit	10-bit	12-bit	12-bit
AEC-Q100	Qualified	Qualified	Qualified	Qualified

Key Differentiators

Dual-core lockstep architecture for safety (vs MPC5644A)
Lower cost at same performance (vs SPC5674F)
Pin-compatible with SPC5668G (vs MPC5644A)

Design Notes

Ensure stable power supply with 100nF and 10uF decoupling capacitors close to each VDD/VSS pair. The SPC5668E operates from 3.0V to 5.5V; use a low-dropout regulator if input voltage exceeds this range. For automotive applications, consider adding reverse polarity protection and load dump protection.

For the LQFP-176 package, use a 4-layer PCB with dedicated ground and power planes. Place the crystal oscillator and its load capacitors as close to the XTAL/EXTAL pins as possible, with a ground guard ring to reduce noise. Keep analog and digital grounds separate and connect at a single point.

Do not exceed the absolute maximum ratings for supply voltage (6.0V) or input pins. Ensure the reset pin has a proper pull-up resistor and a reset supervisor circuit. For JTAG debugging, keep the JTAG traces short and avoid routing near high-speed signals to prevent signal integrity issues.