LM3S1G21-IQC80-A1T

Program Memory Type:	FLASH
Base Part Number:	LM3S1G21
Supplier Device Package:	100-LQFP (14x14)
Package / Case:	100-LQFP
Operating Temperature:	-40°C ~ 85°C (TA)
Oscillator Type:	Internal
Data Converters:	A/D 8x12b
Voltage - Supply (Vcc/Vdd):	1.235 V ~ 1.365 V
RAM Size:	64K x 8
EEPROM Size:	--
Series:	Stellaris® ARM® Cortex®-M3S 1000
Program Memory Size:	384KB (384K x 8)
Number of I/O:	67
Peripherals:	Brown-out Detect/Reset, DMA, POR, PWM, WDT
Connectivity:	EBI/EMI, I²C, IrDA, LINbus, Microwire, SPI, SSI, UART/USART
Speed:	80MHz
Core Size:	32-Bit
Core Processor:	ARM® Cortex®-M3
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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LM3S1G21-IQC80-A1T Application Field and Working Principle

The LM3S1G21-IQC80-A1T is an advanced 8-bit microcontroller designed to meet the needs of embedded applications. This Microcontroller comprises of a 32-bit ARM Cortex-M processor, a set of peripherals, memory, and an internal clock crystal. It features high-speed processing capability and low power consumption.

Application Field

The application field includes input/output (IO) and communication control, automotive control, medical equipment, home appliances, and industrial automation. The LM3S1G21-IQC80-A1T is well suited for a wide range of application fields due to its high performance, low power consumption, and small form factor.

Features

The LM3S1G21-IQC80-A1T features a 32-bit ARM Cortex-M processor, a 64KB code execution RAM, a 64KB odd byte RAM, a 16KB odd byte ROM, an additional 64KB ROM or EEPROM, a quartz clock oscillator with a frequency up to 16.386MHz, and a 6-channel 16-bit timer.The ARM Cortex-M processor offers enhanced performance due to its inherent parallelism and increased instruction count. Additionally, it has the capability to execute 32-bit instructions in one clock cycle. This helps in achieving higher CPU performance with less power consumption.

Peripherals

The LM3S1G21-IQC80-A1T has a variety of built-in peripherals such as two UARTs, two Analog-to-Digital Converters (ADCs), three Parallel Peripheral Interfaces (PPI) for easy interfacing with external devices, three Serial Peripheral Interfaces (SPI) for communication with other Microcontrollers, four counter/timers, and an RTC for timekeeping. It also features 4KB E2EEPROM, watchdog timers, power management, an RTC alarm, and a low-power WAKEUP input for waking up the system from the sleep state. Additionally, it has a variety of analog components, including 2-channel 12-bit ADCs and dual Comparators.

Power Management

The power management of the LM3S1G21-IQC80-A1T is handled by the Low-power Run/Sleep/Wakeup mode. This power management feature helps in reducing the power consumption of the device.The device has the option to enter Sleep mode when there is no activity on any of the peripherals or when all the user-defined wakeup conditions are satisfied. In Sleep mode, the CPU clock is stopped and all peripherals are powered down. This helps in reducing the power consumption significantly for the required period of time.The device can also enter the low power Run mode, which allows it to consume less power when idle. The CPU clock speed is reduced and only the necessary peripherals continue to operate.

Working Principle

The working principle of the LM3S1G21-IQC80-A1T is based on the ARM Cortex-M technology. The device comprises of the processor and the memory and peripherals.The ARM Cortex-M processor is responsible for the execution of instructions and controlling the peripherals. It is connected to the peripherals and the computers through the various I/O ports.The peripherals are responsible for the exchange of data with the external devices and computer systems. The communications between the peripherals and the Cortex-M processor are handled by the bus architecture. The bus consists of an address bus and a data bus.The memory associated with the Cortex-M processor is used to store the instructions, programs, and data. The memory can be either on-chip memory or off-chip memory, depending on the application requirements.The quartz clock oscillator is used to provide a stable clock signal for the operation of the Cortex-M processor and the peripherals.The power management of the device is handled by the Low-power Run/Sleep/Wakeup mode. This helps in reducing the power consumption of the device when idle. The ARM Cortex technology provides the necessary control, user interfaces, and connectivity for the embedded applications. The Cortex-M processor is used for executing the required instructions and controlling the peripherals. The memory provides the working space for the processor. And the bus architecture provides the interface between the peripherals and the processor. The quartz clock oscillator ensures a stable clock signal to the processor and the peripherals. The power management circuitry manages the power consumption of the device. The LM3S1G21-IQC80-A1T is an advanced 8-bit microcontroller, designed to fulfill the needs of embedded applications. It offers high-speed processing and low power consumption, making it well suited for a wide range of applications. The device has a variety of built-in peripherals, making it easy to interface with external devices. Additionally, it has advanced power management features that help reduce power consumption. The working principle of the LM3S1G21-IQC80-A1T is based on the ARM Cortex-M technology which provides the necessary control, user interfaces, and connectivity for embedded applications.

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