原标题：BLE蓝牙模组

应用领域：智能家电

方案类型：成品

主控芯片：rtl8762

方案概述

主要应用智能设备及相关ble设备数据传输，在用户需要控制蓝牙设备及家电时可以通过手机APP进行控制BLE设备。BLE蓝牙模组主要实现接收手机APP下发的数据及对设备进行指命令控制。可以应用到任何BLE需求的领域。

【RTL8762A】

Bluetooth Low Energy SOC

General Description

The RTL8762AG/RTL8762AR/RTL8762AJ/RTL8762AK (hereafter referred to as the RTL8762A) are ultra-low-power system on-chip solutions for Bluetooth low energy applications that combines the excellent performance of a leading RF transceiver with a low-power ARM® Cortex™-M0, 256KB eFlash, 80KB RAM, and rich powerful supporting features and peripherals.

The embedded ARM®Cortex™-M0 32-bit CPU features a 16-bit instruction set with 32-bit extensions (Thumb-2® technology) that delivers high-density code with a small memory footprint. By using a single-cycle 32-bit multiplier, a 3-stage pipeline, and a Nested Vector Interrupt Controller (NVIC), the ARM® Cortex™-M0 CPU makes program execution simple and highly efficient.

In the RTL8762A, we support the Serial Wire Debug (SWD) interface provided as part of the Debug Access Port (DAP), in conjunction with the Basic Branch Buffer (BBB). This offers a flexible and powerful mechanism for non-intrusive program code debugging. Users can easily add breakpoints in the code and perform single-step debugging.

The RTL8762A memory architecture includes 80KB of data RAM that can be divided into three portions, e.g., 16KB for buffer RAM, 24KB for on-RAM, and 40KB for off-RAM. Specifically, the available memory for APPs includes 9KB in on-RAM and 18KB in off-RAM. Each on-RAM and off-RAM can be divided into static and dynamic areas. The area size can be adjusted via eFUSE.

The on-RAM can maintain data when the system is in Deep Low Power State (DLPS) mode (Data in off-RAM is lost when the system enters DLPS mode). The static area refers to the global variables in the program. The dynamic area refers to the direct or indirect call of the OS’s pvPortMalloc allocated space, such as xQueueCreate, xTaskCreate, etc.

The RTL8762A also integrates a sigma-delta ADC, programmable gain amplifier, and microphone bias circuit for voice command application. The RTL8762A embeds IR transceiver, hardware keyscan, and Quad-decoder on a single IC, and is provided in a QFN package.

Package and pin differences between the AG/AR/AJ/AK versions are described in this document where they arise.

Features

General

Ultra low power consumption with intelligent PMU

Supports Bluetooth 4.2 core specification

Integrated MCU to execute Bluetooth protocol stack

Supports multiple level Low Energy states

Supports LE L2CAP Connection Oriented Channel Support

Supports LE low duty directed advertising

Supports LE data length extension feature

Supports OTA (Over-the-Air) programming mechanism for firmware upgrade

Supports external 32KHz XTAL for low power mode

Supports GAP, ATT/GATT, SMP, L2CAP

Generic Applications for GAP Central, Peripheral, Observer and Broadcaster Roles

Platform

ARM®Cortex™-M0 (Maximum 53MHz)

256KB embedded flash

80KB RAM

2KB eFUSE

Supports AES128/192/256 encrypt/decrypt engine

Bluetooth Transceiver

Fast AGC control to improve receiving dynamic range

Supports Bluetooth Low Energy PHY

Peripheral Interfaces

Flexible General Purpose IOs

RTL8762AR: 15 GPIOs

RTL8762AG: 16 GPIOs

RTL8762AJ: 23 GPIOs

RTL8762AK: 37 GPIOs

Three configurable LED pins

Hardware Keyscan and Quad-decoder

Embedded IR transceiver

Real-Time Counters (RTC)

Supports generic 4-wire SPI master/slave

Supports Low power comparator

Timers x 8

I2C x 2

PWM x 4

UART x 3

Supports 40MHz XTAL

Supports audio ADC for voice command application

Package

RTL8762AR: 32-pin 5x5mm QFN

RTL8762AG: 32-pin 5x5mm QFN

RTL8762AJ : 40-pin 5x5mm QFN

RTL8762AK: 56-pin 7x7mm QFN