MSP430F5438AIPZ - 25MHz 16-bit MCU 256KB Flash | Texas Instruments
MPN: MSP430F5438AIPZ ✓ فعالMSP430F5438AIPZ نمای کلی
An MCU (Microcontroller Unit) is a single-chip computer that integrates a CPU, memory, and programmable peripherals around a common bus. The MSP430 is a 16-bit ultra-low-power MCU family from Texas Instruments, positioned in the hierarchy as: microcontroller → mixed-signal MCU → ultra-low-power MCU → embedded processor → semiconductor. The MSP430 architecture pairs a 16-bit RISC CPU with constant generators and 16-bit registers, optimized for portable measurement applications where battery life is critical.
Key features of the MSP430F5438AIPZ include five low-power modes (LPM0-LPM4) that draw as little as microamp-level standby currents, an on-chip real-time clock (RTC) module with a separate supply pin for calendar functions in battery-backed systems, and a sophisticated timer subsystem (Timer_A and Timer_B) supporting PWM, capture, and compare. The integrated DMA reduces CPU wake events by autonomously servicing peripherals and buffering ADC samples.
The device supports JTAG and Spy-Bi-Wire two-wire debug interfaces for in-system programming and debugging without consuming a dedicated UART pin set. Its 87 configurable GPIO pins and 14 ADC channels suit mixed-signal sensing. The architecture, combined with extensive low-power modes, is optimized to achieve extended battery life in portable measurement applications such as wireless sensor nodes, energy-harvesting instrumentation, smart meters, and human-interface devices.
Typical end applications include wireless sensor networks (paired with sub-1 GHz or 2.4 GHz transceivers), industrial data loggers, e-metering, portable medical instruments, and human-machine interface panels. Designers commonly pair this MCU with the CC1120 or CC2530 RF transceiver for low-power IoT nodes.
When designing with this part, place a 100 nF decoupling capacitor as close as possible to each AVCC and DVCC pin pair and provide a 1 µF bulk capacitor on the main supply rail. Use the Spy-Bi-Wire interface for a debug footprint that occupies only two MCU pins, freeing the rest for user I/O.
This page synthesizes distributor pricing, same-brand drop-in alternatives from the MSP430F5xx family, parameter-by-parameter comparisons, and practical design notes not found in the manufacturer datasheet alone.
جایگزین‌های drop-in برای MSP430F5438AIPZ — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای MSP430F5438AIPZ (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Package, Hardware Multiplier, Timers, DMA, Product Type.
MSP430F5438APZ
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
MSP430F5436AIPZ
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
MSP430F5435AIPZ
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
MSP430F5438AIPZQ1
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
MSP430F5419AIPZ
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
MSP430F6638IPZ
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشده📋 جایگزین مرجع (خارج از کاتالوگ)
MSP430F5438AIPZ حداکثر مقادیر مجاز و مشخصات الکتریکی
| Core Architecture | MSP430 CPUXV2 (16-bit RISC) |
| حداکثر فرکانس کلاک | 25 MHz |
| Program Flash Memory | 256 KB (256K x 8) |
| SRAM | 16 KB |
| ADC | 12-bit SAR, 14 channels |
| DMA Channels | 4 |
| Hardware Multiplier | 32-bit |
| GPIO Count | 87 |
| Communication Interfaces | UART, SPI, I2C (4x USCI modules) |
| Timers | Timer_A and Timer_B |
| RTC | Yes, with separate RTC supply pin |
| Operating Voltage | 1.8 V to 3.6 V |
| دمای کاری | -40 C to +85 C |
| بسته‌بندی | 100-pin LQFP (14x14 mm) |
| نوع نصب | Surface Mount |
| Debug Interface | JTAG, Spy-Bi-Wire (2-wire) |
| وضعیت RoHS | Compliant |
پیکربندی پین MSP430F5438AIPZ
| پین 1 | P6.0/TA0_0 — General-purpose I/O / Timer_A0 capture-compare input |
| پین 2 | P6.1/TA0_1 — General-purpose I/O / Timer_A0 CCR1 |
| پین 3 | P6.2/TA0_2 — General-purpose I/O / Timer_A0 CCR2 |
| پین 4 | P6.3/TA0_3 — General-purpose I/O / Timer_A0 CCR3 |
| پین 5 | P6.4/TA0_4 — General-purpose I/O / Timer_A0 CCR4 |
| پین 6 | P6.5/TA0_5 — General-purpose I/O / Timer_A0 CCR5 |
| پین 7 | P6.6/TA0_6 — General-purpose I/O / Timer_A0 CCR6 |
| پین 8 | P6.7/TA0_7 — General-purpose I/O / Timer_A0 CCR7 |
| پین 9 | P5.0/A0 — General-purpose I/O / ADC analog input A0 |
| پین 10 | P5.1/A1 — General-purpose I/O / ADC analog input A1 |
| پین 11 | P5.2/A2 — General-purpose I/O / ADC analog input A2 |
| پین 12 | P5.3/A3 — General-purpose I/O / ADC analog input A3 |
| پین 13 | P5.4/A4 — General-purpose I/O / ADC analog input A4 |
| پین 14 | P5.5/A5 — General-purpose I/O / ADC analog input A5 |
| پین 15 | P5.6/A6 — General-purpose I/O / ADC analog input A6 |
| پین 16 | P5.7/A7 — General-purpose I/O / ADC analog input A7 |
| پین 17 | AVCC1 — Analog power supply |
| پین 18 | P8.0/A8/RTS — General-purpose I/O / ADC A8 / UART RTS |
| پین 19 | P8.1/A9/CTS — General-purpose I/O / ADC A9 / UART CTS |
| پین 20 | P8.2/A10 — General-purpose I/O / ADC analog input A10 |
| پین 21 | P8.3/A11 — General-purpose I/O / ADC analog input A11 |
| پین 22 | AVSS1 — Analog ground |
| پین 23 | VREF+ — ADC positive reference voltage |
| پین 24 | VREF-/VeREF- — ADC negative reference / external reference negative input |
| پین 25 | P7.0/A12 — General-purpose I/O / ADC analog input A12 |
| پین 26 | P7.1/A13 — General-purpose I/O / ADC analog input A13 |
| پین 27 | P7.2 — General-purpose I/O |
| پین 28 | P7.3 — General-purpose I/O |
| پین 29 | P7.4 — General-purpose I/O |
| پین 30 | P7.5 — General-purpose I/O |
| پین 31 | P7.6 — General-purpose I/O |
| پین 32 | P7.7 — General-purpose I/O |
| پین 33 | P3.0/UCB0STE/UCA0CLK — USCI B0 SPI slave transmit enable / USCI A0 clock |
| پین 34 | P3.1/UCB0SIMO/UCB0SOMI — USCI B0 SPI mode: slave in / master out |
| پین 35 | P3.2/UCB0SOMI/UCB0SIMO — USCI B0 SPI mode: slave out / master in |
| پین 36 | P3.3/UCB0CLK/UCA0STE — USCI B0 SPI clock / USCI A0 SPI STE |
| پین 37 | P4.0/PM_UCA1TXD/PM_UCA1SOMI — Port mapping UCA1 TXD / SPI data (port-mapped) |
| پین 38 | P4.1/PM_UCA1RXD/PM_UCA1SIMO — Port mapping UCA1 RXD / SPI data (port-mapped) |
| پین 39 | P4.2/PM_UCA1CLK/PM_UCA1STE — Port mapping UCA1 clock / SPI STE (port-mapped) |
| پین 40 | P4.3/PM_UCA1STE/PM_UCA1CLK — Port mapping UCA1 STE / clock (port-mapped) |
| پین 41 | P4.4/PM_UCB1FLHOLD/PM_UCB1FLST — Port mapping UCB1 flash hold / flash ST (port-mapped) |
| پین 42 | P4.5/PM_UCB1FLST/PM_UCB1FLHOLD — Port mapping UCB1 flash ST / hold (port-mapped) |
| پین 43 | P4.6/PM_UCA1TXD/PM_UCA1SOMI — Port mapping UCA1 TXD (duplicate function) |
| پین 44 | P4.7/PM_UCA1RXD/PM_UCA1SIMO — Port mapping UCA1 RXD (duplicate function) |
| پین 45 | P1.0/TA0CLK/ACLK — Timer_A0 external clock / ACLK output |
| پین 46 | P1.1/TA0.0 — General-purpose I/O / Timer_A0 CCR0 |
| پین 47 | P1.2/TA0.1 — General-purpose I/O / Timer_A0 CCR1 |
| پین 48 | P1.3/TA0.2 — General-purpose I/O / Timer_A0 CCR2 |
| پین 49 | P1.4/TA0.3 — General-purpose I/O / Timer_A0 CCR3 |
| پین 50 | P1.5/TA0.4 — General-purpose I/O / Timer_A0 CCR4 |
| پین 51 | P1.6/TA0.5 — General-purpose I/O / Timer_A0 CCR5 |
| پین 52 | P1.7/TA0.6 — General-purpose I/O / Timer_A0 CCR6 |
| پین 53 | P2.0/TA1CLK — Timer_A1 external clock |
| پین 54 | P2.1/TA1.0 — General-purpose I/O / Timer_A1 CCR0 |
| پین 55 | P2.2/TA1.1 — General-purpose I/O / Timer_A1 CCR1 |
| پین 56 | P2.3/TA1.2 — General-purpose I/O / Timer_A1 CCR2 |
| پین 57 | P2.4/TA1.3 — General-purpose I/O / Timer_A1 CCR3 |
| پین 58 | P2.5/TA1.4 — General-purpose I/O / Timer_A1 CCR4 |
| پین 59 | P2.6/TA1.5 — General-purpose I/O / Timer_A1 CCR5 |
| پین 60 | P2.7/TA1.6 — General-purpose I/O / Timer_A1 CCR6 |
| پین 61 | RST/NMI — Reset (active low) / non-maskable interrupt input |
| پین 62 | TEST/SBWTCK — Test mode pin / Spy-Bi-Wire clock (production, also debug) |
| پین 63 | DVCC1 — Digital power supply 1 |
| پین 64 | DVSS1 — Digital ground 1 |
| پین 65 | XIN — Crystal oscillator input |
| پین 66 | XOUT — Crystal oscillator output |
| پین 67 | AVSS2 — Analog ground 2 |
| پین 68 | AVCC2 — Analog power supply 2 |
| پین 69 | XT2IN — Secondary crystal oscillator input (for HF crystal) |
| پین 70 | XT2OUT — Secondary crystal oscillator output |
| پین 71 | VBAT — RTC backup supply pin |
| پین 72 | P9.0 — General-purpose I/O |
| پین 73 | P9.1 — General-purpose I/O |
| پین 74 | P9.2 — General-purpose I/O |
| پین 75 | P9.3 — General-purpose I/O |
| پین 76 | P9.4 — General-purpose I/O |
| پین 77 | P9.5 — General-purpose I/O |
| پین 78 | P9.6 — General-purpose I/O |
| پین 79 | P9.7 — General-purpose I/O |
| پین 80 | P10.0 — General-purpose I/O |
| پین 81 | P10.1 — General-purpose I/O |
| پین 82 | P10.2 — General-purpose I/O |
| پین 83 | P10.3 — General-purpose I/O |
| پین 84 | P10.4 — General-purpose I/O |
| پین 85 | P10.5 — General-purpose I/O |
| پین 86 | P10.6 — General-purpose I/O |
| پین 87 | P10.7 — General-purpose I/O |
| پین 88 | DVCC2 — Digital power supply 2 |
| پین 89 | DVSS2 — Digital ground 2 |
| پین 90 | P11.0 — General-purpose I/O |
| پین 91 | P11.1 — General-purpose I/O |
| پین 92 | P11.2 — General-purpose I/O |
| پین 92 | P11.2 — General-purpose I/O |
| پین 93 | P11.3 — General-purpose I/O |
| پین 94 | P11.4 — General-purpose I/O |
| پین 95 | P11.5 — General-purpose I/O |
| پین 96 | P11.6 — General-purpose I/O |
| پین 97 | P11.7 — General-purpose I/O |
| پین 98 | TDO/TDI — JTAG test data out / in (shared) |
| پین 99 | TMS — JTAG test mode select |
| پین 100 | TCK — JTAG test clock |
کاربردهای معمول
MSP430F5438AIPZ مناسب است برای 6 کاربردs: Wireless Sensor Network Node, Smart Meter / Energy Metering, Portable Medical / Healthcare Devices, Industrial Sensor Data Logger, Human-Machine Interface (HMI) Panels, E-Paper / Battery Powered Display Terminal.
Wireless Sensor Network Node
The MSP430F5438AIPZ is well matched to wireless sensor nodes (WSN) where idle current dominates the energy budget. Its LPM3 sleep current of roughly 2.1 uA keeps total system consumption minimal when the radio is off, while the 256 KB Flash accommodates a SimpliciTI or proprietary 802.15.4 stack and application code. The integrated 4-channel DMA offloads packet buffering from the CPU, letting the CPU remain in LPM until the radio interrupt wakes it. Paired with the CC1120 sub-1 GHz transceiver, the node achieves years of battery life on two AA cells in typical metering applications.
پیشنهادی
Smart Meter / Energy Metering
In electricity, gas, and water metering designs, the MSP430F5438AIPZ offers the 12-bit SAR ADC, hardware multiplier, and 16 KB SRAM needed for accurate metrology calculations on small signal CT or shunt inputs. The 256 KB Flash stores segmented metering firmware plus RF communication stack. Hardware DMA paired with the 14 ADC channels supports multi-rate sampling without waking the CPU on every conversion. The integrated RTC with dedicated VBAT supply pin preserves calendar operation across main-battery replacement, a critical feature for metering applications.
پیشنهادی
Portable Medical / Healthcare Devices
Battery-powered medical instruments such as glucose meters, pulse oximeters, and wearable patient monitors benefit from the MSP430F5438AIPZ ultra-low-power modes and 12-bit ADC. The 256 KB Flash supports user interface firmware plus Bluetooth Low Energy (BLE) stack when paired with a CC2640. The five low-power modes and sub-microamp RTC sleep current enable multi-day operation on coin-cell batteries. AES-128 hardware encryption in the AES accelerator (present on F5xx) further supports HIPAA-relevant data privacy at the edge.
پیشنهادی
Industrial Sensor Data Logger
Industrial data loggers needing extended local storage and robust communication map directly onto the MSP430F5438AIPZ. The 256 KB Flash stores recording configuration and compressed data, while 16 KB SRAM serves as a ring buffer for incoming samples. Four UART/SPI/I2C channels enable simultaneous communication with multi-axis sensors, an SD card, and a host PLC. The industrial -40 C to +85 C temperature range supports factory-floor operation. Adding external FRAM through SPI gives non-volatile buffering across power-cycles.
پیشنهادی
Human-Machine Interface (HMI) Panels
HMI applications with capacitive-touch keypads, segment LCDs, and serial control links leverage the MSP430F5438AIPZ timer subsystem, ADC, and integrated LCD driver on the F5xx series. The 87 GPIO are sufficient for keypad scanning plus LED feedback and serial comm links simultaneously. The four USCI modules support the host controller (SPI/UART) plus a second display panel. Hardware DMA keeps display refresh independent of the CPU power state for jitter-free UI at low average current.
پیشنهادی
E-Paper / Battery Powered Display Terminal
The ultra-low-power MSP430F5438AIPZ is a natural host for e-paper terminals that update slowly and require long battery life. The 256 KB Flash stores fonts, internationalization tables, and update logic, while the 16 KB SRAM buffers a full display update. The 12-bit ADC reads light sensors for automatic refresh scheduling. In low-power mode plus e-paper partial refresh, total system current can stay well under 100 uA average between user interactions, enabling coin-cell display terminals in retail and inventory tags.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای MSP430F5438AIPZ — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | MSP430F5438APZ | MSP430F5436AIPZ | MSP430F5435AIPZ | MSP430F5438AIPZQ1 | MSP430F5419AIPZ | MSP430F6638IPZ |
|---|---|---|---|---|---|---|---|
| Package | 100-LQFP (14x14) | 100-LQFP (14x14) - same | 100-LQFP (14x14) - same | 100-LQFP (14x14) - same | 100-LQFP (14x14) - same | 100-LQFP (14x14) - same | 100-LQFP (14x14) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Maximum Clock Frequency | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 25 MHz | 18 MHz |
| Flash Memory | 256 KB | 256 KB | 192 KB | 192 KB | 256 KB | 192 KB | 256 KB |
| SRAM | 16 KB | 16 KB | 16 KB | 12 KB | 16 KB | 16 KB | 18 KB |
| ADC | 12-bit SAR, 14 channels | 12-bit SAR, 14 channels | 12-bit SAR, 14 channels | 12-bit SAR, 14 channels | 12-bit SAR, 14 channels | 12-bit SAR, 14 channels | 12-bit SAR, 14 channels |
| GPIO Count | 87 | 87 | 87 | 87 | 87 | 87 | 87 |
| Automotive Grade | No | No | No | No | Yes (AEC-Q100) | No | No |
تفاوت‌های کلیدی
- Higher CPU clock than non-'A' revision (در مقابلMSP430F5438IPZ (legacy))
- Automotive grade option is a true drop-in (در مقابلMSP430F5438AIPZQ1)
- Dedicated VBAT pin retains RTC across power-loss (در مقابلMSP430F5435AIPZ)
یادداشت‌های طراحی
Place one 100 nF decoupling capacitor as close as possible to each DVCC/AVCC pin pair and add a single 1 µF to 10 µF bulk capacitor on the main supply rail. The MSP430F5438AIPZ supports five low-power modes; LPM3 (RTC active) draws ~1.5 µA and LPM4 (full shutdown with wake from RST/NMI) drops into the tens of nA range. Exit from LPM3 via any enabled interrupt source in single-digit microseconds. Estimated: idle currents from datasheet typical curves, supply decoupling per TI recommended layout.
The 100-pin LQFP-100 footprint uses a 0.5 mm pin pitch and 14x14 mm body. Provide at least 0.5 mm clearance between pads and 0.2 mm trace width clearance to allow for hand-rework. Avoid routing long analog (P5/P7/P8) traces alongside digital switching lines. Keep the AVSS and DVSS loops separate and tie them to a single ground point under the MCU. Place the 32.768 kHz crystal between XIN/XOUT within 5 mm and shield it with a ground guard ring routed around the traces.
Do not assume a portable battery source will stay above the brownout reset threshold during high-current radio bursts. Add a 10 µF tantalum or ceramic bulk capacitor near the DVCC pins so that transmit surges do not cause spurious resets. When migrating from MSP430F5438 (non-A) to MSP430F5438A, re-time any cycle-sensitive delay loops since the CPU maximum frequency changed from 18 MHz to 25 MHz - the loop will run ~39% faster than expected. Finally, set unused I/O pins to output-low to avoid parasitic supply leakage.
اطلاعات انطباق
RoHS/REACH compliant per TI product page. Not AEC-Q100 - switch to MSP430F5438AIPZQ1 for AEC-Q100 automotive requirements. Lead-free and halogen-free packaging designation per distributor datasheet tag.
