TI MSP430FW429：超低功耗混合信号微控制器技术规格与下载

微控制器

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"TI的MSP430FW429是一款由德州仪器(TI)推出的微控制器，属于MSP430系列。这款MCU以其低功耗特性著称，适用于各种需要节能和高性能计算的嵌入式应用，如模拟传感器系统、数字传感器系统、燃气、热量或水表等工业计量设备以及手持式仪表。" MSP430FW429的关键特性包括： 1. **低供电电压范围**：工作在1.8V至3.6V之间，这使得它能够适应广泛的电源条件，并且在电池供电的设备中表现出色。 2. **封装形式**：采用64引脚的四方扁平无引脚(QFP)封装，便于在有限空间内集成。 3. **超低功耗**：在主动模式下，1MHz运行时仅消耗200μA的电流，而在待机模式下电流降至0.7μA，甚至在关闭模式（RAM保留）下仅为0.1μA，极大地延长了电池寿命。 4. **五种节能模式**：提供多种低功耗选项，以适应不同应用的需求。 5. **快速唤醒**：从待机模式唤醒至运行状态可以在6μs内完成，适合需要快速响应的应用场景。 6. **16位RISC架构**：具有高效的125ns指令周期时间，提供了强大的处理能力。 7. **定时器_A**：具备16位定时器_A，支持三种或五种捕获/比较寄存器，可用于精确的时间管理和事件触发。 8. **扫描接口**：用于后台水、热、气体积测量，优化了传感器数据的采集和处理。这款微控制器特别适合于那些需要长时间运行、对电源效率有高要求并且需要实时处理和控制功能的设备。其在工业计量、环境监测和便携式设备中的应用潜力巨大。用户可以通过提供的链接下载MSP430FW429的数据手册/规格书，以获取更详细的技术信息和设计指导。TI官方网站通常会提供最新的文档更新和软件支持，如固件库、开发工具以及样例代码，帮助工程师进行产品开发和系统集成。 MSP430FW429是TI针对低功耗和高效能应用精心设计的一款微控制器，集成了丰富的外设和强大的处理能力，是嵌入式系统设计者的理想选择。

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MSP430FW429, MSP430FW428

MSP430FW427, MSP430FW425, MSP430FW423

www.ti.com

SLAS383E –OCTOBER 2003–REVISED DECEMBER 2013

Memory Organization

Table 5. Memory Organization

MSP430FW423 MSP430FW425 MSP430FW427 MSP430FW428 MSP430FW429

Memory Size 8KB 16KB 32KB 48KB 60KB

Interrupt vector Flash 0FFFFh-0FFE0h 0FFFFh-0FFE0h 0FFFFh-0FFE0h 0FFFFh-0FFE0h 0FFFFh-0FFE0h

Code memory Flash 0FFFFh - 0E000h 0FFFFh-0C000h 0FFFFh-08000h 0FFFFh-04000h 0FFFFh-01100h

Information Size 256 Byte 256 Byte 256 Byte 256 Byte 256 Byte

memory

010FFh-01000h 010FFh-01000h 010FFh-01000h 010FFh-01000h 010FFh-01000h

Boot memory Size 1KB 1KB 1KB 1KB 1KB

0FFFh-0C00h 0FFFh-0C00h 0FFFh-0C00h 0FFFh-0C00h 0FFFh-0C00h

RAM Size 256 Byte 512 Byte 1KB 2KB 2KB

02FFh-0200h 03FFh-0200h 05FFh-0200h 09FFh-0200h 09FFh-0200h

Peripherals 16-bit 01FFh-0100h 01FFh - 0100h 01FFh-0100h 01FFh-0100h 01FFh-0100h

8-bit 0FFh-010h 0FFh-010h 0FFh-010h 0FFh-010h 0FFh-010h

8-bit 0Fh-00h 0Fh-00h 0Fh - 00h 0Fh-00h 0Fh-00h

SFR

Bootstrap Loader (BSL)

The MSP430 bootstrap loader (BSL) enables users to program the flash memory or RAM using a UART serial

interface. Access to the MSP430 memory via the BSL is protected by user-defined password. For complete

description of the features of the BSL and its implementation, see the MSP430 Programming Via the Bootstrap

Loader User's Guide (SLAU319).

BSL FUNCTION PM PACKAGE PINS

Data Transmit 53 - P1.0

Data Receiver 52 - P1.1

Product Folder Links: MSP430FW429 MSP430FW428 MSP430FW427 MSP430FW425 MSP430FW423

MSP430FW429, MSP430FW428

MSP430FW427, MSP430FW425, MSP430FW423

www.ti.com

SLAS383E –OCTOBER 2003–REVISED DECEMBER 2013

Peripherals

Peripherals are connected to the CPU through data, address, and control buses and can be handled using all

instructions. For complete module descriptions, refer to the MSP430x4xx Family User's Guide (SLAU056).

Oscillator and System Clock

The clock system is supported by the FLL+ module that includes support for a 32768-Hz watch crystal oscillator,

an internal digitally controlled oscillator (DCO), and a high-frequency crystal oscillator. The FLL+ clock module is

designed to meet the requirements of both low system cost and low power consumption. The FLL+ features

digital frequency locked loop (FLL) hardware that, in conjunction with a digital modulator, stabilizes the DCO

frequency to a programmable multiple of the watch crystal frequency. The internal DCO provides a fast turn-on

clock source and stabilizes in less than 6 µs. The FLL+ module provides the following clock signals:

• Auxiliary clock (ACLK), sourced from a 32768-Hz watch crystal or a high frequency crystal.

• Main clock (MCLK), the system clock used by the CPU.

• Sub-Main clock (SMCLK), the subsystem clock used by the peripheral modules.

• ACLK/n, the buffered output of ACLK, ACLK/2, ACLK/4, or ACLK/8.

Brownout, Supply Voltage Supervisor (SVS)

The brownout circuit is implemented to provide the proper internal reset signal to the device during power-on and

power-off. The SVS circuitry detects if the supply voltage drops below a user-selectable level and supports both

supply voltage supervision (the device is automatically reset) and supply voltage monitoring (the device is not

automatically reset).

The CPU begins code execution after the brownout circuit releases the device reset. However, V

may not have

ramped to V

CC(min)

at that time. The user must insure the default FLL+ settings are not changed until V

reaches

CC(min)

. If desired, the SVS circuit can be used to determine when V

reaches V

CC(min)

Digital I/O

There are six 8-bit I/O ports implemented—ports P1 through P6:

• All individual I/O bits are independently programmable.

• Any combination of input, output, and interrupt conditions is possible.

• Edge-selectable interrupt input capability for all the eight bits of ports P1 and P2.

• Read/write access to port-control registers is supported by all instructions.

Basic Timer1

The Basic Timer1 has two independent 8-bit timers that can be cascaded to form a 16-bit timer/counter. Both

timers can be read and written by software. The Basic Timer1 can be used to generate periodic interrupts and

clock for the LCD module.

LCD Drive

The LCD driver generates the segment and common signals required to drive an LCD display. The LCD

controller has dedicated data memory to hold segment drive information. Common and segment signals are

generated as defined by the mode. Static, 2-MUX, 3-MUX, and 4-MUX LCDs are supported by this peripheral.

Watchdog Timer (WDT)

The primary function of the WDT module is to perform a controlled system restart after a software problem

occurs. If the selected time interval expires, a system reset is generated. If the watchdog function is not needed

in an application, the module can be configured as an interval timer and can generate interrupts at selected time

intervals.

Comparator_A

The primary function of the Comparator_A module is to support precision slope analog-to-digital conversions,

battery-voltage supervision, and monitoring of external analog signals.

Product Folder Links: MSP430FW429 MSP430FW428 MSP430FW427 MSP430FW425 MSP430FW423

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