MSP430F1491IPMG4 - 16-Bit 8MHz MCU 60KB Flash | TI
MPN: MSP430F1491IPMG4 ✓ Hoạt độngMSP430F1491IPMG4 Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a processor core, memory, and peripherals on one die. Within the power-management hierarchy of embedded systems, an ultra-low-power MCU such as the MSP430F1xx family minimizes energy per operation, making it the controller of choice for battery-powered measurement equipment where battery life is a primary design constraint.
Key features include the 16-bit RISC architecture with 16-bit registers and constant generators for maximum code efficiency, five low-power modes with wake-up from standby in less than 6 microseconds, and a hardware multiplier that offloads multiplication from software. The device operates from 1.8V to 3.6V and offers an industrial operating range of -40C to +85C.
Architecturally, the MSP430F1491 uses an orthogonal one-cycle-per-instruction 16-bit CPU with von Neumann memory access, enabling dense, efficient C code. Flash memory supports in-system programming via JTAG and Bootstrap Loader. The two hardware USARTs support UART and SPI protocols, and Timer_B provides seven compare/capture channels plus PWM outputs for motor and display control.
Typical applications include battery-powered portable instrumentation, metering and data loggers, industrial sensing nodes, and consumer products requiring long standby life. The 48 I/O lines and dual USARTs make it well suited to multi-protocol industrial interfaces.
Design consideration: route the analog supply (AVCC/AVSS) separately from the digital rails and place a 0.1uF decoupling capacitor at every supply pin pair; on the F14x1 family the ADC is absent, so analog input pins may be used as digital I/O only.
This page synthesizes distributor pricing, drop-in family alternatives, pinout data, and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho MSP430F1491IPMG4 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với MSP430F1491IPMG4 (cùng hình factor và footprint) — khác nhau ở Package, Hardware Multiplier, Timers, Flash Memory, Low-Power Modes.
MSP430F1491IPMR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MSP430F149IPMR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MSP430F149IPM
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MSP430F1481IPMR
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
MSP430F148IPMR
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
MSP430F147IPMR
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
MSP430F1491IPMG4 Tỷ lệ tối đa & tính chất điện
| Core Processor | MSP430 CPU16 16-bit RISC |
| Tần số xung maksimum | 8 MHz |
| Flash Memory | 60 KB (60K x 8 + 256B) |
| SRAM | 2 KB |
| Supply Voltage Range | 1.8 V to 3.6 V |
| Number of I/O | 48 |
| Timers | Timer_A3 (3 capture/compare), Timer_B7 (7 capture/compare) |
| Communication Interfaces | 2x USART (UART/SPI) |
| Hardware Multiplier | Yes |
| ADC | No (F14x1 family - no 12-bit ADC) |
| Low-Power Modes | 5 (wake-up from standby < 6 us) |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Hộp | 64-LQFP (10x10 mm) |
| Kiểu lắp đặt | Surface Mount |
| Programming | JTAG, Bootstrap Loader (in-system Flash) |
| Trạng thái vòng đời | Active |
| Trạng thái RoHS | Compliant (G4 green packaging suffix) |
Cấu hình chân MSP430F1491IPMG4
| Chân 1 | DVCC — Digital supply voltage |
| Chân 2 | P6.3/A3 — General-purpose digital I/O |
| Chân 3 | P6.4/A4 — General-purpose digital I/O |
| Chân 4 | P6.5/A5 — General-purpose digital I/O |
| Chân 5 | P6.6/A6 — General-purpose digital I/O |
| Chân 6 | P6.7/A7 — General-purpose digital I/O |
| Chân 7 | VREF+ — Reference voltage output/input |
| Chân 8 | XIN — Crystal input (LFXT1) |
| Chân 9 | XOUT — Crystal output (LFXT1) |
| Chân 10 | DVSS — Digital ground |
| Chân 11 | VREF-/VeREF- — Reference ground / external reference input |
| Chân 12 | P6.0/A0 — General-purpose digital I/O |
| Chân 13 | P6.1/A1 — General-purpose digital I/O |
| Chân 14 | P6.2/A2 — General-purpose digital I/O |
| Chân 15 | P5.0/A8 — General-purpose digital I/O |
| Chân 16 | P5.1/A9 — General-purpose digital I/O |
| Chân 17 | P5.2/A10 — General-purpose digital I/O |
| Chân 18 | P5.3/A11 — General-purpose digital I/O |
| Chân 19 | P4.7 — General-purpose digital I/O |
| Chân 20 | P5.4/MCLK — I/O or master clock output |
| Chân 21 | P5.5/SMCLK — I/O or subsystem master clock output |
| Chân 22 | P5.6/ACLK — I/O or auxiliary clock output |
| Chân 23 | P5.7/TBOUT2 — I/O or Timer_B output 2 |
| Chân 24 | P4.0/TB0 — I/O or Timer_B capture/compare 0 |
| Chân 25 | P4.1/TB1 — I/O or Timer_B capture/compare 1 |
| Chân 26 | P4.2/TB2 — I/O or Timer_B capture/compare 2 |
| Chân 27 | P4.3/TB3 — I/O or Timer_B capture/compare 3 |
| Chân 28 | P4.4/TB4 — I/O or Timer_B capture/compare 4 |
| Chân 29 | P4.5/TB5 — I/O or Timer_B capture/compare 5 |
| Chân 30 | P4.6/TB6 — I/O or Timer_B capture/compare 6 |
| Chân 31 | P3.0/STE0 — I/O or USART0 SPI slave transmit enable |
| Chân 32 | P3.1/SIMO0 — I/O or USART0 SPI slave in/master out |
| Chân 33 | P3.2/SOMI0 — I/O or USART0 SPI slave out/master in |
| Chân 34 | P3.3/UCLK0 — I/O or USART0 clock |
| Chân 35 | P3.4/UTXD0 — I/O or USART0 transmit data |
| Chân 36 | P3.5/URXD0 — I/O or USART0 receive data |
| Chân 37 | P3.6/UTXD1 — I/O or USART1 transmit data |
| Chân 38 | P3.7/URXD1 — I/O or USART1 receive data |
| Chân 39 | P1.0/TACLK — I/O or Timer_A clock input |
| Chân 40 | P1.1/TA0 — I/O or Timer_A capture/compare 0 |
| Chân 41 | P1.2/TA1 — I/O or Timer_A capture/compare 1 |
| Chân 42 | P1.3/TA2 — I/O or Timer_A capture/compare 2 |
| Chân 43 | P1.4/SMCLK — I/O or SMCLK output |
| Chân 44 | P1.5/TACLK — I/O or Timer_A clock input |
| Chân 45 | P1.6/TA0 — I/O or Timer_A capture/compare 0 |
| Chân 46 | P1.7/TA1 — I/O or Timer_A capture/compare 1 |
| Chân 47 | P2.0/ACLK — I/O or ACLK output |
| Chân 48 | P2.1/TAINCLK — I/O or Timer_A input clock |
| Chân 49 | P2.2/TA0 — I/O or Timer_A capture/compare 0 |
| Chân 50 | P2.3/TA1 — I/O or Timer_A capture/compare 1 |
| Chân 51 | P2.4/TA2 — I/O or Timer_A capture/compare 2 |
| Chân 52 | P2.5/Rosc — I/O or external resistor for DCO |
| Chân 53 | P2.6/ADC12CLK — General-purpose digital I/O (F14x1) |
| Chân 54 | P2.7 — General-purpose digital I/O |
| Chân 55 | RST/NMI — Reset input / non-maskable interrupt |
| Chân 56 | TEST — Test mode enable for JTAG pins |
| Chân 57 | TCK — JTAG test clock |
| Chân 58 | TDI — JTAG test data input |
| Chân 59 | TMS — JTAG test mode select |
| Chân 60 | TDO — JTAG test data output |
| Chân 61 | AVSS — Analog ground |
| Chân 62 | AVCC — Analog supply voltage |
| Chân 63 | P6.5 — General-purpose digital I/O |
| Chân 64 | DVCC — Digital supply voltage |
Ứng dụng tiêu biểu
MSP430F1491IPMG4 phù hợp cho 6 Áp dụngs: Battery-Powered Portable Instrumentation, Industrial Communication Nodes, Utility Metering and Data Loggers, Building Automation and HVAC Control, Medical and Diagnostic Portables, Consumer Devices and Handheld Interfaces.
Battery-Powered Portable Instrumentation
The MSP430F1491IPMG4 fits handheld meters and portable data acquisition units where coin-cell or pack life defines the product. Its 16-bit RISC CPU executes most instructions in one cycle at 8 MHz while five low-power modes allow the core to drop to standby current in the low-uA class and wake in under 6 microseconds for periodic sampling or button wake. The 60KB Flash stores logging tables and firmware with in-system update capability over JTAG or BSL, and the 2KB SRAM buffers measurement records. Because the F14x1 sub-family omits the ADC, designs pair it with an external precision converter such as the ADS7813, which trades one SPI-connected chip for significantly better resolution than an integrated ADC would provide.
Được đề xuất
Industrial Communication Nodes
With two independent hardware USARTs, the MSP430F1491IPMG4 bridges protocol domains in industrial nodes - for example UART on one side and SPI on the other, or two isolated RS-485 channels via external transceivers. The hardware multiplier accelerates Modbus CRC and scaling arithmetic without CPU emulation overhead, and the 48 I/O lines handle relay drives, optocoupler inputs, and status signaling. The industrial -40C to +85C range and 1.8V-3.6V operation tolerate unregulated rail sags in factory environments. Timer_B's seven capture/compare channels generate PWM or measure input edges for encoder and flowmeter inputs, giving a single-chip solution for distributed I/O concentrators and gateway adapters.
Được đề xuất
Utility Metering and Data Loggers
Electricity, water, and heat meters demand years of operation from a primary battery, which is precisely the MSP430 design target. The MSP430F1491IPMG4 keeps a real-time tick on a 32.768 kHz crystal (XIN/XOUT pins) in LPM3 standby at microamp-class current, waking under 6 us to run energy-accumulation math through the hardware multiplier. The 60KB Flash retains calibration tables and event logs through power loss, and the 256B calibration Flash segment supports field recalibration. Designs typically pair the MCU with an external metrology front-end or the ADS8482 high-speed ADC for waveform sampling, using the second USART to drive an optical or RF communication head for remote reading.
Được đề xuất
Building Automation and HVAC Control
In thermostats, damper controllers, and sensor hubs, the MSP430F1491IPMG4 provides a cost-effective control core: Timer_B PWM drives damper motors and heaters, the 48 GPIOs handle keypads, LCD backlights, and limit switches, and dual USARTs connect to RS-485 BACnet/Modbus trunks and local peripherals. Standby current in the low-uA class lets wall-powered designs meet energy-star-like standby budgets and battery-backup designs survive outages for days. The 8 MHz CPU with hardware multiplier executes PID loops with ample margin, and in-system Flash programming via the Bootstrap Loader enables field firmware updates without removing the controller from installed buildings.
Được đề xuất
Medical and Diagnostic Portables
Portable diagnostic devices such as glucose meters, pulse oximeters, and hand-held analyzers benefit from the F1491's combination of ultra-low sleep current and deterministic 16-bit processing. Long-duration monitoring is achieved by duty-cycling between LPM3 (microamp-class standby, ACLK-driven timing) and short 8 MHz active bursts. Because patient-connected designs require high-resolution isolated analog front ends, the absence of the on-chip ADC is an advantage in practice: engineers select a dedicated converter such as the ADS7983 with true medical-grade accuracy and safety separation, interfaced over the MCU's SPI USART. JTAG-based secure Flash programming and 60KB code capacity accommodate protocol stacks and UI firmware comfortably.
Được đề xuất
Consumer Devices and Handheld Interfaces
Cost-sensitive consumer products - remote controls, electronic toys, small appliances, and handheld calculators - use the MSP430F1491IPMG4 where an 8-bit MCU would run out of code space. The 60KB Flash supports menu-driven UIs, LCD segment libraries, and RF protocol stacks simultaneously, while the one-cycle 16-bit core keeps responsiveness crisp at low clock rates, directly reducing average current. Hardware multiplier speeds up touch and codec math, and the wide 1.8V-3.6V supply range allows operation directly from two alkaline cells as they discharge. The G4 green packaging meets global consumer-market RoHS requirements without additional qualification effort.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MSP430F1491IPMG4 — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | MSP430F1491IPMR | MSP430F149IPMR | MSP430F1481IPMR | MSP430F147IPMR |
|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 64-LQFP (10x10 mm) | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same |
| CPU / Max Clock | MSP430 16-bit RISC, 8 MHz | MSP430 16-bit RISC, 8 MHz | MSP430 16-bit RISC, 8 MHz | MSP430 16-bit RISC, 8 MHz | MSP430 16-bit RISC, 8 MHz |
| Flash Memory | 60 KB | 60 KB | 60 KB | 48 KB | 32 KB |
| SRAM | 2 KB | 2 KB | 2 KB | 2 KB | 1 KB |
| 12-bit ADC | No | No | Yes (8 channels) | No | Yes (8 channels) |
| USARTs | 2 | 2 | 2 | 2 | 1 |
| Hardware Multiplier | Yes | Yes | Yes | Yes | Yes |
| Supply Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
Bảo phân biệt quan trọng
- Lower cost via omitted ADC (vsMSP430F149IPMR)
- Dual hardware USARTs vs F147's single USART (vsMSP430F147IPMR)
- Maximum memory in the F14x1 sub-family (vsMSP430F1481IPMR)
Ghi chú thiết kế
Decouple every supply pin: 100 nF ceramic at DVCC (pin 1), AVCC (pin 62), and VREF+ (pin 7), plus a 10 uF bulk capacitor near the regulator. Keep the analog ground island (AVSS, pin 61) tied to digital ground at a single star point to prevent digital return currents from modulating the reference. Place the 32.768 kHz crystal for XIN/XOUT within 5 mm of the MCU with guard rings to ground - this crystal clocks LPM3 standby timing and accuracy directly affects long-term battery-life calculations in metering designs.
The F14x1 sub-family has no on-chip ADC, so pins labeled A0-A11 are plain digital I/O; do not route analog signals to them expecting measurement capability. If your design inherited an MSP430F149 layout, the PCB can remain unchanged, but firmware must not touch ADC12 registers or it will fault. For precision analog acquisition, budget an external ADC such as the ADS7813 or ADS7983 on the USART0 SPI bus and account for its supply current in your 1.8V-3.6V power tree.
Pull up RST/NMI (pin 55) with 47k-100k and add a 10 nF to ground for reliable power-on reset; floating reset causes erratic boot behavior. Keep the TEST pin (56) grounded in production unless JTAG programming is needed, and remember JTAG access can be permanently fused - provide BSL (Bootstrap Loader) access on P1.1/P1.2 with an external header if field firmware updates are planned. When using P2.5/Rosc for DCO trimming, place the external resistor close to the pin.
Thông tin tuân thủ
G4 ordering suffix denotes TI green/RoHS-compliant packaging per distributor listings. Industrial temperature grade; not AEC-Q100 automotive qualified.
