STM32W108: ARM Cortex-M3 集成ZigBee无线SoC数据手册

需积分: 10 56 浏览量更新于2024-07-23 收藏 3.4MB PDF 举报

"STM32W108是意法半导体（STMicroelectronics）推出的一款高性能、低功耗的无线系统级芯片（SoC），专为ZigBee应用设计，集成了Cortex-M3处理器和2.4GHz IEEE 802.15.4无线收发器。该芯片具有不同容量的嵌入式Flash内存，适用于各种物联网和无线通信应用。" STM32W108的主要特点和功能包括： 1. 完整的系统级芯片：STM32W108集成了32位ARM Cortex-M3处理器，提供高效能的计算能力，适合实时控制任务。 2. ZigBee无线技术：内置2.4GHz IEEE 802.15.4标准无线收发器，支持ZigBee网络协议，可构建低功耗的无线通信网络。 3. 内存配置：提供128/192/256-Kbyte的Flash存储空间和8/12/16-Kbyte的RAM，满足不同应用程序的需求。 4. 安全性：内建AES128加密加速器，确保数据传输的安全性。 5. 丰富的外设接口：包括灵活的ADC、SPI、UART、I2C串行通信接口以及通用定时器，便于扩展和连接其他硬件设备。 6. GPIO接口：具备24个可配置的GPIO引脚，带有施密特触发输入，适应各种输入信号。 7. 高效的处理器：Cortex-M3处理器采用Thumb-2指令集，可在6, 12或24MHz频率下运行，具有嵌套向量中断控制器，支持高效的中断处理。 8. 低功耗管理：在接收状态下，CPU的电流消耗仅为27mA；在3dBm发射功率下，电流消耗为31mA。深度睡眠模式下，保留RAM和GPIO的电流低至400nA/800nA，具有睡眠定时器选项。 9. 低功耗时钟：内置低频内部RC振荡器，适用于低功耗睡眠定时。这款芯片适用于需要ZigBee无线连接的物联网设备，如智能家居、工业自动化、环境监测等场景，其低功耗特性使其特别适合电池供电的远程应用。STM32W108的设计考虑了性能、功耗和易用性，是开发ZigBee解决方案的理想选择。

Description STM32W108HB STM32W108CC STM32W108CB STM32W108CZ

16/285 DocID16252 Rev 15

1.2 Overview

1.2.1 Functional description

The STM32W108 radio receiver is a low-IF, super-heterodyne receiver. The architecture

has been chosen to optimize co-existence with other devices in the 2.4 GHz band (namely,

WIFI and Bluetooth), and to minimize power consumption. The receiver uses differential

signal paths to reduce sensitivity to noise interference. Following RF amplification, the

signal is downconverted by an image-rejecting mixer, filtered, and then digitized by an ADC.

The radio transmitter uses an efficient architecture in which the data stream directly

modulates the VCO frequency. An integrated power amplifier (PA) provides the output

power. Digital logic controls Tx path and output power calibration. If the STM32W108 is to

be used with an external PA, use the TX_ACTIVE or nTX_ACTIVE signal to control the

timing of the external switching logic.

The integrated 4.8 GHz VCO and loop filter minimize off-chip circuitry. Only a 24 MHz

crystal with its loading capacitors is required to establish the PLL local oscillator signal.

The MAC interfaces the on-chip RAM to the Rx and Tx baseband modules. The MAC

provides hardware-based IEEE 802.15.4 packet-level filtering. It supplies an accurate

symbol time base that minimizes the synchronization effort of the software stack and meets

the protocol timing requirements. In addition, it provides timer and synchronization

assistance for the IEEE 802.15.4 CSMA-CA algorithm.

The STM32W108 integrates an ARM® Cortex-M3 microprocessor, revision r1p1. This

industry-leading core provides 32 bit performance and is very power efficient. It has

excellent code density using the ARM® Thumb 2 instruction set. The processor can be

operated at 12 MHz or 24 MHz when using the crystal oscillator, or at 6 MHz or 12 MHz

when using the integrated high frequency RC oscillator.

The STM32W108 has 128/192/256 Kbytes of Flash memory, 8/12/16 Kbytes of SRAM on-

chip, and the ARM configurable memory protection unit (MPU).

The STM32W108 contains 24 GPIO pins shared with other peripheral or alternate functions.

Because of flexible routing within the STM32W108, external devices can use the alternate

functions on a variety of different GPIOs. The integrated Serial Controller SC1 can be

configured for SPI (master or slave), I

C (master-only), or UART operation, and the Serial

Controller SC2 can be configured for SPI (master or slave) or I

C (master-only) operation.

The STM32W108 has a general purpose ADC which can sample analog signals from six

GPIO pins in single-ended or differential modes. It can also sample the regulated supply

VDD_PADSA, the voltage reference VREF, and GND. The ADC has two selectable voltage

ranges: 0 V to 1.2 V for the low voltage (input buffer disabled) and 0.1 V to VDD_PADS

minus 0.1 V for the high voltage supply (input buffer enabled). The ADC has a DMA mode to

capture samples and automatically transfer them into RAM. The integrated voltage

reference for the ADC, VREF, can be made available to external circuitry. An external

voltage reference can also be driven into the ADC.

The STM32W108 contains four oscillators: a high frequency 24 MHz external crystal

oscillator (24 MHz HSE OSC), a high frequency 12 MHz internal RC oscillator (12 MHz HSI

RC), an optional low frequency 32.768 kHz external crystal oscillator (32 kHz HSE OSC),

and a 10 kHz internal RC oscillator (10 kHz LSI RC).

DocID16252 Rev 15 17/285

STM32W108HB STM32W108CC STM32W108CB STM32W108CZ Description

281

The STM32W108 has an ultra low power, deep sleep state with a choice of clocking modes.

The sleep timer can be clocked with either the external 32.768 kHz crystal oscillator or with

a 1 kHz clock derived from the internal 10 kHz LSI RC oscillator. Alternatively, all clocks can

be disabled for the lowest power mode. In the lowest power mode, only external events on

GPIO pins will wake up the chip. The STM32W108 has a fast startup time (typically 100 µs)

from deep sleep to the execution of the first ARM® Cortex-M3 instruction.

The STM32W108 contains three power domains. The always-on high voltage supply

powers the GPIO pads and critical chip functions. Regulated low voltage supplies power the

rest of the chip. The low voltage supplies are be disabled during deep sleep to reduce power

consumption. Integrated voltage regulators generate regulated 1.25 V and 1.8 V voltages

from an unregulated supply voltage. The 1.8 V regulator output is decoupled and routed

externally to supply analog blocks, RAM, and Flash memories. The 1.25 V regulator output

is decoupled externally and supplies the core logic.

The digital section of the receiver uses a coherent demodulator to generate symbols for the

hardware-based MAC. The digital receiver also contains the analog radio calibration

routines and controls the gain within the receiver path.

In addition to 2 general-purpose timers, the STM32W108 also contains a watchdog timer to

ensure protection against software crashes and CPU lockup, a 32-bit sleep timer dedicated

to system timing and waking from sleep at specific times and an ARM® standard system

event timer in the NVIC.

The STM32W108 integrates hardware support for a Packet Trace module, which allows

robust packet-based debug.

Note: The STM32W108 is not pin-compatible with the previous generation chip, the SN250,

except for the RF section of the chip. Pins 1-11 and 45-48 are compatible, to ease migration

to the STM32W108.

1.2.2 ARM

Cortex™-M3 core

The STM32W108 integrates the ARM

Cortex™-M3 microprocessor, revision r1p1,

developed by ARM Ltd, making the STM32W108 a true system-on-a-chip solution. The

ARM

Cortex-M3 is an advanced 32-bit modified Harvard architecture processor that has

separate internal program and data buses, but presents a unified program and data address

space to software. The word width is 32 bits for both the program and data sides. The ARM

Cortex-M3 allows unaligned word and half-word data accesses to support efficiently-packed

data structures.

The ARM

Cortex-M3 clock speed is configurable to 6 MHz, 12 MHz, or 24 MHz. For normal

operation 12 MHz is preferred over 24 MHz due to its lower power consumption. The 6 MHz

operation can only be used when radio operations are not required since the radio requires

an accurate 12 MHz clock.

The ARM

Cortex-M3 in the STM32W108 has also been enhanced to support two separate

memory protection levels. Basic protection is available without using the MPU, but the usual

operation uses the MPU. The MPU protects unimplemented areas of the memory map to

prevent common software bugs from interfering with software operation. The architecture

could also separate the networking stack from the application code using a fine granularity

RAM protection module. Errant writes are captured and details are reported to the

developer to assist in tracking down and fixing issues.

剩余284页未读，继续阅读

Juniedeng

粉丝: 2
资源: 9

STM32W108: ARM Cortex-M3 集成ZigBee无线SoC数据手册

STM32W108 SimpleMAC库用户手册

STM32W108 ZigBee开发套件用户手册

STM32W108 ZigBee starterkit：基于IEEE 802.15.4的RF开发平台

STM32W108HB/STM32W108CB：高性能IEEE802.15.4无线系统级芯片

stm32w108资料

stm32w108固件库

STM32W108的实验

STM32W108固件库

stm32w108_zigbee

STM32W108 MAC library

最新资源