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ESP32 S Wifi BLE SOC Module
ESP32 is a WiFi and Bluetooth system-on-chip (SoC) with industry-leading RF performance, low power and high integration advantages. The ESP32 integrates complete transmit/receive RF functions including antenna switches, RF balun, power amplifiers, low noise amplifiers, filters, power management modules and advanced self-calibration circuitry. The self-calibration circuit implements dynamic auto-tuning to eliminate defects in external circuitry. ESP32 with two 32-bit, LX6 CPU, clocked at up to 240MHz, using 7-level pipeline architecture. ESP32 also integrates a wealth of analogue sensing and digital interface. ESP32's ultra-low-power RF architecture and patented power-saving technology extend the battery life of practical applications. ESP32 fully complies with WiFi 802. 11b / g / n / e /I and Bluetooth 4. 2 standards, integrated WiFi / Bluetooth / BLE RF and low power technology, and supports open real-time operating system RTOS. ESP32's integrated tuning cache helps improve system performance and optimize system storage. The flexible RAM / ROM partition architecture allows users to customize to meet specific requirements and usage. ESP32 can be used as a standalone application or as a slave for a host MCU. As a slave, the ESP32 provides WiFi and Bluetooth via the SPI / SDIO or I2C / UART interface. 2.1 WiFi. 1 WiFi • 802.11 b / g / n / e / i • 802.11 n (2.4 GHz) at speeds up to 150 Mbps • 802.11 e: QoS mechanism to implement wireless multimedia technology • WMM-PS, UAPSD • A-MPDU and A-MSDU frame aggregation techniques • Block reply • Fragmentation and reorganization • Beacon automatic monitoring / scanning • 802.11
i security features: pre-authentication and TSN • Supports WPA / WPA2 / WPA2-Enterprise / WPS encryption • Infrastructure BSS Station mode / SoftAP mode • Wi-Fi Direct (P2P), P2P discovery, P2P GO mode, and P2P power management • UMA compatible and certified • Antenna diversity and selection 2. 2 Bluetooth 2 Bluetooth • Bluetooth v4. 2 complete standard, including traditional Bluetooth (BR / EDR) and low power Bluetooth (BLE) • Supports standard Class-1, Class-2 and Class-3, and eliminates the need for external power amplifiers • Enhanced precision power control • Output power up to + 10 dBm • The NZIF receiver has BLE receive sensitivity of -98 dBm • Adaptive Frequency Hopping (AFH) • Standard HCI based on SDIO / SPI / UART interface • High-speed UART HCI with speeds up to 4 Mbps • Supports BT 4. 2 controller and host protocol stack • Service Discovery Protocol (SDP) • Universal Access Application (GAP) • Security Management Protocol (SMP) • Low power Bluetooth • ATT / GATT • HID • Supports all GATT-based low-power Bluetooth applications • SPP-Like Low Power Bluetooth Data Transparency Protocol • BLE Beacon • A2DP / AVRCP / SPP, HSP / HFP, RFCOMM • CVSD and SBC audio codec algorithms • Bluetooth piconet and Scatternet 2. 3 CPU and storage • Xtensa® 32-bit LX6 dual-core processor with computing power up to 600 DMIPS • 448 KByte ROM • 520 KByte SRAM • 16 KByte SRAM in RTC • The QSPI can connect up to four Flash / SRAMs, each with 16 MBytes of Flash • Supply voltage: 2.2 V to 3. 6V 2.4 clock and timer Built-in 8 MHz oscillator for self-calibration • Built-in RC oscillator for self-calibration • Supports external 2 MHz to 40 MHz crystal • Supports external 32 kHz crystal for RTC, supports self-calibration • 2 timer groups each consisting of 2 64-bit general-purpose timers and 1 master system watchdog • RTC timers with sub-second precision • RTC watchdog 2. 5 Peripheral interface • 12-bit SAR ADC with up to 18 channels • 2 8-bit D / A converters • 10 touch sensors • Temperature Sensor • 4 SPIs • 2 I2S • 2 I2C • 3 UARTs • 1 Host SD / eMMC / SDIO • 1 Slave SDIO / SPI • Ethernet MAC interface with dedicated DMA to support IEEE 1588 • CAN 2. 0 • IR (TX / RX) • Motor PWM • LED PWM, up to 16 channels • Hall sensor • Ultra-low-power preamplifier 2.6 security mechanism. 6 security mechanism • Supports all IEEE 802. 11 security features, including WFA, WPA / WPA2 and WAPI • Safe start • Flash encryption • 1024-bit OTP, user-available up to 768 bits • Encrypted hardware accelerator: - AES - HASH (SHA-2) library - RSA - ECC - random number generator (RNG) 2. 7 Application • Universal low power IoT sensor hub • Universal low power IoT recorder • Video streaming of the camera • OTT TV box / set-top box device • music player - Network music player - Audio streaming media device • Wi-Fi toys - Counter - toys anti-lost device • Wi-Fi speech recognition device • Headset • Smart socket • Home automation • Mesh network • Industrial wireless control • Baby monitor • Wearable electronic products • Wi-Fi location-aware devices • Security ID tag • Healthcare - Motion monitoring and anti-lost alarm - Temperature recorder ESP32 powered by a low-power Xtensa® LX6 32-bit dual-core processor with the following features: 4. 1 CPU1 CPU • 7-stage pipelined architecture that supports clock frequencies up to 240 MHz • 16-bit / 24-bit instruction set improves code density • Support for floating point units (FPU) • Supports DSP instructions such as 32-bit amplifiers, 32-bit dividers and 40-bit accumulation multiplier (MAC) • Supports 32 interrupt vectors from approximately 70 interrupt sources The dual-core processor interface includes: • Xtensa RAM / ROM instruction and data interface • Xtensa local storage interface for quick access to external registers • Interrupt with internal and external interrupt sources • JTAG interface for debugging 4. 2 on-chip storage on-chip storage ESP32 on-chip storage includes: • 448 KBytes of ROM for program startup and kernel function calls • 520 KBytes on-chip SRAM for data and instruction storage • 8 KBytes of SRAM in RTC, or RTC slow memory, can be accessed by coprocessor in Deep-sleep mode • 8 kBytes of SRAM in RTC, RTC Fast Memory, which can be used for data storage and access by the primary CPU when RTC is started in Deep-sleep mode • 1 kbit EFUSE, where 256 bits are system-specific (MAC address and chipset);
the remaining 768 bits are reserved for user applications, including Flash encryption and chip ID 4.
3 External Flash and SRAM ESP32 supports up to four 16 MBytes of external QSPI Flash and static random access memory (SRAM) with AES-based hardware encryption to protect the developer's programs and data.
ESP32 accesses external QSPI Flash and SRAM via cache:
• Up to 16 MBytes of external Flash maps to CPU code space, supports 8-bit, 16-bit and 32-bit access, and executable code.
• Up to 8 MBytes of external Flash and SRAM are mapped to CPU data space, supporting 8-bit, 16-bit and 32-bit access.
Flash only supports read operations, SRAM can support read and write operations.