Overview
The Texas Instruments MSP430G2955IRHA40R is an ultra-low-power mixed signal microcontroller from the MSP430 family. This device is designed to optimize power consumption and extend battery life in portable measurement applications. It features a 16-bit RISC CPU, 16-bit registers, and constant generators that contribute to maximum code efficiency. The MSP430G2955IRHA40R includes built-in 16-bit timers, up to 32 I/O touch-sense-enabled pins, a versatile analog comparator, and built-in communication capability using the universal serial communication interface (USCI).
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | 40-VQFN (6x6) |
| Pins | 40 |
| Operating Temperature Range (°C) | -40 to 85 |
| Supply Voltage Range | 1.8 V to 3.6 V |
| Active Mode Power Consumption | 250 µA at 1 MHz, 2.2 V |
| Standby Mode Power Consumption | 0.7 µA |
| Off Mode (RAM Retention) Power Consumption | 0.1 µA |
| Instruction Cycle Time | 62.5 ns |
| Internal Frequencies | Up to 16 MHz with four calibrated frequencies |
| Internal Oscillators | Very-Low-Power Low-Frequency (LF) Oscillator, High-Frequency (HF) Crystal up to 16 MHz |
| Timers | Two 16-Bit Timer_A with three capture/compare registers, One 16-Bit Timer_B with three capture/compare registers |
| ADC Converter | 10-Bit 200-ksps Analog-to-Digital (A/D) Converter with internal reference, sample-and-hold, and autoscan |
| Memory | 56 KB Flash, 4096 Bytes RAM |
Key Features
- Ultra-low power consumption with five power-saving modes and ultra-fast wake-up from standby mode in less than 1 µs.
- 16-Bit RISC architecture with 62.5-ns instruction cycle time.
- Universal Serial Communication Interface (USCI) supporting UART, IrDA, SPI, and I2C™.
- Up to 32 touch-sense-enabled I/O pins.
- On-chip comparator for analog signal compare function or slope analog-to-digital (A/D) conversion.
- 10-Bit 200-ksps Analog-to-Digital (A/D) Converter with internal reference, sample-and-hold, and autoscan.
- Brownout detector and serial onboard programming with no external programming voltage needed.
- Bootstrap loader and on-chip emulation logic.
Applications
The MSP430G2955IRHA40R is typically used in low-cost sensor systems that capture analog signals, convert them to digital values, and then process the data for display or transmission to a host system. These applications include portable measurement devices, energy harvesting systems, and other low-power embedded systems.
Q & A
- What is the operating temperature range of the MSP430G2955IRHA40R?
The operating temperature range is -40°C to 85°C.
- What is the supply voltage range for this microcontroller?
The supply voltage range is 1.8 V to 3.6 V.
- How much power does the MSP430G2955IRHA40R consume in active mode?
In active mode, it consumes 250 µA at 1 MHz, 2.2 V.
- What types of communication interfaces does the MSP430G2955IRHA40R support?
It supports UART, IrDA, SPI, and I2C™ through the Universal Serial Communication Interface (USCI).
- What is the resolution and sampling rate of the Analog-to-Digital (A/D) Converter?
The A/D Converter is 10-bit with a sampling rate of 200 ksps.
- How many touch-sense-enabled I/O pins does the MSP430G2955IRHA40R have?
It has up to 32 touch-sense-enabled I/O pins.
- What are the different power-saving modes available on the MSP430G2955IRHA40R?
The device has five software-selectable low-power modes: Active Mode, Low-Power Mode 0 (LPM0), Low-Power Mode 1 (LPM1), Low-Power Mode 2 (LPM2), Low-Power Mode 3 (LPM3), and Low-Power Mode 4 (LPM4).
- What is the wake-up time from standby mode to active mode?
The wake-up time from standby mode to active mode is less than 1 µs.
- Does the MSP430G2955IRHA40R support onboard programming?
Yes, it supports serial onboard programming with no external programming voltage needed.
- What type of packaging is available for the MSP430G2955IRHA40R?
The device is available in a 40-pin VQFN (6x6) package.
