help the automotive industry meet the upcoming emissions regulations for
single- and twin-cylinder gasoline engines, STMicroelectronics, with Arrow
Electronics, has released a complete reference design ECU (Electronic Control
Unit) for electronic fuel-injection (EFI).
SPC5-L9177A-K02 ECU Reference Design targets small engines for motorcycles,
scooters, and three wheelers, which must satisfy upcoming Euro 5, Bharat Stage
VI (BSVI), and China IV and beyond, and can also address generators, nautical
engines, and agricultural engines equipped with EFI ECU.
reference design key components are ST’s SPC572L Line 32-bit Power Architecture
automotive-powertrain microcontroller and L9177A high-integration IC hosting
power supplies, interfaces and load actuators, which are specifically designed
for the application and market needs. ST’s STGD18N40 IGBT and L9616 CAN
interface IC are also included.
board is ready for customers to develop their applications, coming with a full
ecosystem, including SPC5Studio Integrated Development Environment (IDE) which
includes low-level drivers, a Generic Timer Module (GTM) configurator for the
SPC572L Line, and powertrain libraries for engine crank position sensor and
actuations. To overcome the complex challenges associated with electronic fuel
injection, a basic application software developed in association with ST
Partner eMoticom helps users start and manage a single-cylinder engine.
SPC572L Line is part of 32-bit Performance Series Automotive MCUs designed to
manage up to four-cylinder gasoline and diesel engines in addition to chassis,
transmission, steering, and braking systems. The SPC572L Line includes the GTM,
an intelligent complex timer module, 16 input and 56 output channels, 1.5MB
read-while write (RWW) Flash memory with EEPROM emulation, 64KByte
general-purpose data SRAM, two deserial/serial peripheral interface (DSPI)
modules, an enhanced analog-to-digital converter system, and self-test
L9177A contains the power supplies and actuators for combustion engines up to
two cylinders, leveraging ST’s proprietary BCD process to combine logic and
power circuitry on a single die. It integrates a 300mA 5V regulator with
thermal shutdown, a 5V tracking regulator with short-to-battery protection, two
low-RDS(ON) injector drivers, a driver for the stepper motor typically used to
control engine idle speed, an oxygen-sensor heater output, and comprehensive
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