MSP430P315CY - 16-Bit 8MHz 16KB OTP MCU | Texas Instruments
Référence : MSP430P315CY ✓ ActifMSP430P315CY Présentation
A mixed-signal microcontroller combines a digital processor, analog and timing resources, memory, and communication peripherals on one chip. Within the MSP430 family, the device belongs to the mixed-signal MCU hierarchy rather than the flash-memory general-purpose MSP430X line. One-time-programmable memory permits a finished device to be programmed once, which can simplify production control when field updates are unnecessary.
The verified source information identifies a 16-bit RISC architecture, 16 KB OTP memory, 512 B RAM, up to 92 LCD segments, and operation at 8 MHz. It also reports low-current operation at 1 MHz and 3 V, five power-saving modes, 1.3 uA standby current, 0.1 uA RAM-retention/off current, and a maximum 6 us wakeup from standby. These figures make the MCU appropriate for designs where most of the time is spent waiting for an input or measurement event.
The LCD integration is particularly useful for segment-driven meters because external display multiplexing is reduced. The CPU16 architecture supports efficient control of sensor inputs, timers, and LCD segments while retaining state in low-power modes. Firmware and board design must still confirm the required LCD segment map, pin assignments, timing, and voltage limits before layout release.
Typical uses include compact utility meters, temperature controllers, industrial panel instruments, portable monitors, and low-cost embedded sensing systems. For battery-powered products, use the standby and RAM-retention modes only when the application can tolerate the stated 1.3 uA and 0.1 uA conditions, respectively. Wakeup latency also affects whether the MCU can meet a short measurement or response interval.
The principal design trade-off is OTP memory: it supports a compact, controlled programming process but cannot be updated like flash. Confirm final code size before programming, reserve pins for the exact display and peripherals, and follow the manufacturer’s absolute maximum and recommended operating conditions. This page combines distributor availability, verified family specifications, application guidance, and replacement considerations beyond a raw catalog entry.
Alternatives de remplacement direct pour MSP430P315CY — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Aucune alternative de remplacement direct disponible pour ce produit.
Demander des alternativesMSP430P315CY Valeurs maximales et caractéristiques électriques
| Product Type | 16-bit mixed-signal microcontroller |
| Architecture | 16-bit RISC |
| Fréquence d'horloge maximale | 8 MHz |
| Program Memory | 16 KB OTP |
| RAM | 512 bytes |
| LCD Segment Support | 92 segments |
| Supply Voltage Range | 3.3 V to 5.5 V |
| Low-Power Reference Condition | 1 MHz at 3 V |
| Power-Saving Modes | 5 modes |
| Standby Current | 1.3 uA |
| RAM Retention/Off Current | 0.1 uA |
| Wakeup Time from Standby | 6 us maximum |
| Process Technology | CMOS |
| Temperature Grade | Industrial |
| Minimum Operating Temperature | -40 °C |
| Package Pin Count | 11 pins |
| Package Type | 11-pin XCEPT |
Guide de configuration des broches du MSP430P315CY 11-pin xcept
Configuration des broches du MSP430P315CY (boîtier 11-pin xcept). Ce circuit intégré numérique comprend des GPIO, des interfaces de communication (UART, SPI, I2C) et des broches d'alimentation. Consultez la fiche technique du fabricant pour les fonctions alternatives des broches et les options de configuration. Indispensable pour la conception de systèmes embarqués et la conception de circuits imprimés.
Aucune donnée de brochage détaillée disponible pour MSP430P315CY.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
MSP430P315CY convient pour 6 applications: Compact LCD Energy Meter, Industrial Panel Instrument, Battery-Powered Sensor Node, Temperature and Process Monitor, Portable Data Logger, Fixed-Function Appliance Controller.
Compact LCD Energy Meter
The MSP430P315CY fits a compact metering product because it combines a 16-bit CPU with support for as many as 92 LCD segments, 512 bytes of RAM, and 16 KB of OTP firmware. It can drive a segment display while retaining measurement state between updates without a separate display controller. The MCU operates across a cited 3.3 V to 5.5 V range, allowing integration around common industrial or battery-regulated rails. Its 0.1 uA RAM-retention/off figure and 6 us maximum standby wakeup can help reduce energy use, although LCD bias, active current, and battery leakage determine real runtime.
Recommandé
Industrial Panel Instrument
MSP430P315CY is appropriate for compact industrial instruments that need local LCD feedback and low standby consumption. Its 16-bit RISC core and 8 MHz maximum clock provide control headroom for sensor conversion, timing, keypad scanning, and display updates, while 512 bytes of RAM support short working buffers. The cited 3.3 V to 5.5 V range fits a broad class of regulated control rails, but the final design must validate noise, startup, and brownout behavior from the manufacturer documentation. OTP firmware is advantageous when the instrument has a fixed configuration and does not require customer field updates.
Recommandé
Battery-Powered Sensor Node
The MSP430P315CY suits a battery-powered sensor node that wakes periodically, records a measurement, updates a small display, and returns to a low-power state. Its five power-saving modes, 1.3 uA standby current, and 0.1 uA RAM-retention/off current reduce the idle burden, while 6 us maximum wakeup supports responsive event handling. The 16 KB OTP limit must accommodate sensing, filtering, communications, and display firmware without revision after programming. If the sensor needs continuous sampling or frequent wireless activity, measure the average current carefully rather than relying on standby figures alone.
Recommandé
Temperature and Process Monitor
MSP430P315CY can act as the control center for a temperature or process monitor because the LCD segment support provides direct local readout while the 16-bit core handles periodic conversion, threshold checks, and control outputs. At 3.3 V to 5.5 V, it can operate from either a regulated 3.3 V system or a suitable 5 V design after electrical validation. Five power modes help separate continuous monitoring from low-energy idle intervals. Because only high-level specifications are verified here, the analog front end, sensor interface, LCD bias, and calibrated control loop must be designed against the complete manufacturer documentation.
Recommandé
Portable Data Logger
MSP430P315CY supports a portable logger when the product emphasizes low standby demand, local LCD status, and fixed factory-programmed behavior. The 16 KB OTP region stores application firmware, while 512 bytes of RAM can retain rolling state during periodic sensor sampling. Between records, firmware can place the core in standby or RAM-retention/off operation, then wake within the cited 6 us maximum interval. External nonvolatile storage may be needed for long histories because the MCU’s verified internal program memory is only 16 KB and its RAM is limited to 512 bytes.
Recommandé
Fixed-Function Appliance Controller
MSP430P315CY is a practical controller for appliances and small equipment whose firmware is finalized during production and whose user interface is based on an LCD. OTP memory provides one-time program storage, the 16-bit architecture manages buttons, timers, and actuator sequencing, and the cited 1.3 uA standby current supports low idle demand. A 3.3 V or 5 V architecture can simplify integration with common control electronics, subject to the complete electrical limits. This approach is less suitable when end users must update firmware, customize behavior, or add a large application after manufacturing.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour MSP430P315CY — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit |
|---|---|
| Brand | Texas Instruments |
| Package | 11-pin XCEPT |
| CPU Architecture | 16-bit RISC |
| Maximum Clock | 8 MHz |
| Program Memory | 16 KB OTP |
| RAM | 512 bytes |
| LCD Segment Support | 92 segments |
| Supply Voltage | 3.3 V to 5.5 V |
| Power-Saving Modes | 5 modes |
| Standby Current | 1.3 uA |
Principaux différenciateurs
- Higher verified maximum clock than the cited MSP430G2452IPW14 comparison (vs MSP430G2452IPW14)
- Larger program-memory capacity than the cited MSP430G2452IPW14 comparison (vs MSP430G2452IPW14)
- Compact 11-pin package with substantial LCD integration (vs MSP430G2452IPW14)
Notes de conception
Firmware should spend as much time as practical in a verified low-power state because the cited 1.3 uA standby and 0.1 uA RAM-retention/off figures apply only to their specified modes and conditions. Disable unused peripherals, gate LCD segments when the product specification allows, and avoid active polling. Do not calculate battery life from standby current alone; include LCD bias, sensor load, active-mode time, regulator efficiency, and battery self-discharge.
The target is identified as an 11-pin XCEPT device, but the supplied evidence does not provide exact pin numbers or land-pattern geometry. Before PCB release, obtain the MSP430P315 manufacturer package drawing and verify LCD segment assignments, supply pins, programming access, exposed or thermal contacts, and XCEPT footprint dimensions. Do not derive the footprint from generic TSSOP or SOIC drawings because small package differences can prevent soldering or alter electrical performance.
Treat the 16 KB OTP limit as a hard firmware-planning constraint and remove the requirement for in-field updates before selecting this MCU. Validate linked code size, bootloader assumptions, configuration data, and factory test flow before programming. OTP cannot be rewritten like flash, so late field bugs require device replacement or external reprogrammable storage. Also confirm that 512 bytes of RAM are sufficient for the display, timing, stack, and measurement buffers.
Informations de conformité
The supplied product and distributor snippets do not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. Industrial temperature grade is stated, but it must not be interpreted as AEC-Q100 qualification.
