Overview
The Texas Instruments MSP430G2955IDA38 is an ultra-low-power mixed signal microcontroller from the MSP430G2x55 series. This device is designed to optimize power consumption, making it ideal for battery-powered and portable measurement applications. It features a 16-bit RISC CPU, 16-bit registers, and constant generators that contribute to maximum code efficiency. The microcontroller includes various peripherals such as 16-bit timers, touch-sense-enabled I/O pins, and a versatile analog comparator. The universal serial communication interface (USCI) supports multiple communication protocols like UART, SPI, I2C, and IrDA.
Key Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Texas Instruments |
| Series | MSP430G2xx |
| Core Processor | MSP430 |
| Core Size | 16-Bit |
| Speed | Up to 16 MHz |
| Connectivity | I2C, IrDA, LIN, SCI, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, POR, WDT |
| Number of I/O | Up to 32 |
| Program Memory Size | 56 KB (56K x 8) |
| Program Memory Type | FLASH |
| RAM Size | 4 KB |
| Voltage - Supply (Vcc/Vdd) | 1.8 V to 3.6 V |
| Data Converters | 10-Bit 200-ksps A/D Converter |
| Oscillator Type | Internal |
| Operating Temperature | -40°C to 85°C |
| Package / Case | 38-TSSOP (0.240", 6.10mm Width) |
Key Features
- Low Supply-Voltage Range: 1.8 V to 3.6 V
- Ultra-Low Power Consumption:
- Active Mode: 250 µA at 1 MHz, 2.2 V
- Standby Mode: 0.7 µA
- Off Mode (RAM Retention): 0.1 µA
- Five Power-Saving Modes
- Ultra-Fast Wake-Up From Standby Mode in Less Than 1 µs
- 16-Bit RISC Architecture, 62.5-ns Instruction Cycle Time
- Internal Frequencies up to 16 MHz With Four Calibrated Frequency
- Internal Very-Low-Power Low-Frequency (LF) Oscillator and High-Frequency (HF) Crystal up to 16 MHz
- External Digital Clock Source and External Resistor
- Two 16-Bit Timer_A With Three Capture/Compare Registers and One 16-Bit Timer_B With Three Capture/Compare Registers
- Up to 32 Touch-Sense-Enabled I/O Pins
- Universal Serial Communication Interface (USCI) with Enhanced UART, IrDA Encoder and Decoder, Synchronous SPI, and I2C
- 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
- Programmable Code Protection by Security Fuse and Bootstrap Loader
- On-Chip Emulation Logic
Applications
The MSP430G2955IDA38 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
- Battery-powered systems requiring extended battery life
- Capacitive touch and grip detection systems
- NFC/RFID reader applications
- Other ultra-low-power mixed signal applications
Q & A
- What is the operating voltage range of the MSP430G2955IDA38?
The operating voltage range is from 1.8 V to 3.6 V.
- What is the maximum clock speed of the MSP430G2955IDA38?
The maximum clock speed is up to 16 MHz.
- How many I/O pins does the MSP430G2955IDA38 have?
The device has up to 32 I/O pins, which are touch-sense-enabled.
- What types of communication interfaces does the MSP430G2955IDA38 support?
The device supports I2C, IrDA, LIN, SCI, SPI, and UART/USART.
- What is the power consumption in active mode?
The power consumption in active mode is 250 µA at 1 MHz, 2.2 V.
- Does the MSP430G2955IDA38 have an on-chip A/D converter?
Yes, it has a 10-Bit 200-ksps Analog-to-Digital (A/D) Converter With Internal Reference, Sample-and-Hold, and Autoscan.
- What is the package type of the MSP430G2955IDA38?
The package type is 38-TSSOP (0.240", 6.10mm Width).
- What is the operating temperature range of the MSP430G2955IDA38?
The operating temperature range is from -40°C to 85°C.
- Does the MSP430G2955IDA38 support capacitive touch functionality?
Yes, it supports up to 32 touch-sense-enabled I/O pins.
- What is the wake-up time from standby mode?
The wake-up time from standby mode is less than 1 µs.
