Overview
The Texas Instruments MSP430F123IDW is a member of the MSP430 family of ultralow-power microcontrollers. This device is designed to optimize power consumption, making it ideal for applications requiring extended battery life. The MSP430F123IDW features a powerful 16-bit RISC CPU, 16-bit registers, and constant generators that enhance code efficiency. It also includes a digitally controlled oscillator (DCO) that allows for quick wake-up from low-power modes to active mode in less than 6 µs.
Key Specifications
| Specification | Value |
|---|---|
| Microcontroller Type | 16-bit RISC |
| Flash Memory | 8 KB |
| RAM | 256 B |
| Operating Frequency | Up to 8 MHz |
| Supply Voltage Range | 1.8 V to 3.6 V |
| Power Consumption (Active Mode) | 200 µA at 1 MHz, 2.2 V |
| Power Consumption (Standby Mode) | 0.7 µA |
| Power Consumption (Off Mode with RAM Retention) | 0.1 µA |
| Package Type | 28-Pin Plastic Small-Outline Wide Body (SOWB), 28-Pin Plastic Thin Shrink Small-Outline Package (TSSOP), 32-Pin QFN |
| Operating Temperature Range | -40°C to 85°C |
| Communication Interfaces | USART0 (UART or SPI), JTAG |
| Timer | 16-Bit Timer_A with three capture/compare registers |
| Comparator | On-chip comparator for analog signal compare function or slope A/D conversion |
Key Features
- Ultralow-power consumption with five power-saving modes
- 16-bit RISC CPU with 125 ns instruction cycle time
- Digitally controlled oscillator (DCO) for fast wake-up from low-power modes
- Serial communication interface (USART0) with software-selectable asynchronous UART or synchronous SPI
- On-chip comparator for analog signal comparison or slope A/D conversion
- 16-bit Timer_A with three capture/compare registers
- Serial onboard programming without external programming voltage
- Programmable code protection by security fuse
- Supply voltage brownout protection
- Single slope A/D conversion capability on resistive sensors using I/O port inputs
Applications
The MSP430F123IDW is suitable for various applications that require low power consumption and efficient processing. Typical applications include:
- Sensor systems that capture analog signals, convert them to digital values, and process or transmit the data
- Stand-alone RF sensor front ends
- Portable measurement applications where extended battery life is crucial
- Systems requiring single slope A/D conversion on resistive sensors
Q & A
- What is the maximum operating frequency of the MSP430F123IDW?
The maximum operating frequency is up to 8 MHz.
- What is the supply voltage range for the MSP430F123IDW?
The supply voltage range is from 1.8 V to 3.6 V.
- How much power does the MSP430F123IDW consume in active mode at 1 MHz and 2.2 V?
The power consumption in active mode at 1 MHz and 2.2 V is 200 µA.
- What types of communication interfaces does the MSP430F123IDW support?
The device supports USART0 (UART or SPI) and JTAG interfaces.
- What is the purpose of the on-chip comparator in the MSP430F123IDW?
The on-chip comparator is used for analog signal comparison or slope A/D conversion.
- Can the MSP430F123IDW be programmed without an external programming voltage?
Yes, the device supports serial onboard programming without an external programming voltage.
- What is the operating temperature range of the MSP430F123IDW?
The operating temperature range is from -40°C to 85°C.
- How many I/O pins does the MSP430F123IDW have?
The device has twenty-two I/O pins.
- 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 6 µs.
- Does the MSP430F123IDW have built-in code protection?
Yes, the device has programmable code protection by security fuse.
- What types of packages are available for the MSP430F123IDW?
The device is available in 28-Pin Plastic Small-Outline Wide Body (SOWB), 28-Pin Plastic Thin Shrink Small-Outline Package (TSSOP), and 32-Pin QFN packages.
