MSP430P315CY

Microcontrollers Overview

The MSP430P315CY is a mixed-signal microcontroller from the Texas Instruments MSP430x31x family. It features a 16-bit RISC architecture with 16 kB of OTP program memory and 512 bytes of RAM. The device operates within a supply voltage range of 2.5 V to 5.5 V and supports up to five power-saving modes, including standby mode with 1.3 µA current consumption. Key peripherals include an integrated LCD driver for up to 92 segments, a slope A/D converter, and a Timer/Port module. It utilizes a single common 32 kHz crystal with an internal system clock capable of reaching 3.3 MHz via a frequency-locked loop.

Microcontrollers Feature Summary

• Ultra-low-power consumption with multiple operating modes and rapid wake-up capability
• Integrated LCD driver supporting static and multiplexed displays up to 92 segments
• Slope A/D conversion functionality using external components for resistive sensor interfacing
• Serial onboard programming support with security fuse code protection

Microcontrollers Applications

• Sensor systems requiring analog signal capture and digital processing
• Battery-operated applications demanding extended operational lifetime
• Resistive sensor interfaces utilizing slope A/D conversion
• Display systems driven by integrated LCD controllers

Microcontrollers Procurement Notes

Verify the specific package configuration required for the MSP430P315CY variant, as the datasheet indicates availability in 56-pin SSOP, 48-pin SSOP, or 68-pin JLCC packages depending on the suffix. Confirm that the OTP memory type aligns with production requirements rather than prototyping needs. Ensure compatibility with the specified 2.5 V to 5.5 V supply voltage range for the target application environment.

Microcontrollers Selection Notes

Select this component when a balance of moderate program memory (16 kB) and significant RAM (512 B) is required alongside display driving capabilities. The inclusion of a slope A/D converter makes it suitable for applications involving resistive sensors without needing external ADC hardware. Consider the available package options and the specific pinout requirements for LCD segments and general-purpose I/O when designing the PCB layout.

Microcontrollers Part Context

The MSP430P315CY belongs to the legacy MSP430x31x family, which was designed for low-cost, low-power mixed-signal applications. This family emphasizes energy efficiency through advanced power management modes and integrates peripherals like LCD drivers and timers directly onto the chip. The P-series designation specifically denotes One-Time Programmable (OTP) memory, distinguishing it from ROM-based C-series or EPROM-based E-series variants within the same architectural framework.

Microcontrollers Replacement Considerations

The datasheet explicitly states that the MSP430P313 is not recommended for new designs and has been replaced by the MSP430P315.