ESP32-S3-WROOM-1

Part: ESP32-S3-WROOM-1 / ESP32-S3-WROOM-1U from Espressif

Type: Wi-Fi (802.11 b/g/n) and Bluetooth 5 (LE) MCU module

Description: A powerful, generic Wi-Fi + Bluetooth LE MCU module built around an Xtensa dual-core 32-bit LX7 microprocessor up to 240 MHz, featuring up to 16 MB Flash, up to 8 MB PSRAM, and 36 GPIOs.

Operating Conditions:

• Supply voltage: 3.0–3.6 V
• Operating temperature: -40 to 105 °C
• CPU clock frequency: Up to 240 MHz

Absolute Maximum Ratings:

• Max supply voltage: 3.6 V
• Max junction/storage temperature: 105 °C

Key Specs:

• CPU: Xtensa dual-core 32-bit LX7 microprocessor, up to 240 MHz
• ROM: 384 KB
• SRAM: 512 KB (plus 16 KB in RTC)
• Flash: Up to 16 MB SPI flash
• PSRAM: Up to 8 MB
• Wi-Fi Standard: 802.11 b/g/n, up to 150 Mbps
• Bluetooth: Bluetooth 5 (LE), Bluetooth mesh, 2 Mbps PHY
• GPIOs: 36
• High-level source current (I_OH): 40 mA (VDD = 3.3 V, VOH >= 2.64 V, PAD_DRIVER = 3)
• Low-level sink current (I_OL): 28 mA (VDD = 3.3 V, VOL = 0.495 V, PAD_DRIVER = 3)

Features:

• Integrated 40 MHz crystal oscillator
• On-board PCB antenna (ESP32-S3-WROOM-1) or external antenna connector (ESP32-S3-WROOM-1U)
• Rich set of peripherals: GPIO, SPI, LCD, Camera, UART, I2C, I2S, USB 1.1 OTG, ADC, touch sensor, temperature sensor
• Acceleration for neural network computing and signal processing workloads
• Low-power co-processor for peripheral monitoring

Applications:

• Generic Low-power IoT Sensor Hub
• Generic Low-power IoT Data Loggers
• Cameras for Video Streaming
• Speech Recognition
• Image Recognition
• Home Automation

Package:

• 18 × 25.5 × 3.1 mm (ESP32-S3-WROOM-1 variants)
• 18 × 19.2 × 3.2 mm (ESP32-S3-WROOM-1U variants)

• Generic Low-power IoT Sensor Hub
• Generic Low-power IoT Data Loggers
• Cameras for Video Streaming
• Over-the-top (OTT) Devices

PRELIMINARY · USB Devices · Speech Recognition · Image Recognition · Mesh Network · Home Automation · Health Care Applications · Wi-Fi-enabled Toys · Wearable Electronics · Retail & Catering Applications

• Smart Building
• Industrial Automation
• Smart Agriculture
• Audio Applications

ESP32-S3-WROOM-1 Pinout

Package: 41-pin module (WROOM form factor)

Notes

• Strapping pins (GPIO0, GPIO3, GPIO45, GPIO46): These pins sample voltage levels during chip reset and determine boot mode, VDD_SPI voltage, and JTAG signal source. GPIO0, GPIO45, and GPIO46 have internal weak pull-up/pull-down; GPIO3 is floating by default.
• OSPI PSRAM variants: In module variants with embedded OSPI PSRAM (ESP32-S3R8), pins IO35, IO36, and IO37 are reserved for PSRAM and unavailable for general use.
• Type codes: P = power supply; I = input; O = output; T = high impedance (tri-state capable).
• EN pin: Must not be left floating; tie to 3V3 for normal operation or to GND to power off.

The values presented in this section are preliminary and may change with the final release of this datasheet.

PRELIMINARY Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. Table 5: Absolute Maximum Ratings 4.2 Recommended Operating Conditions Table 6: Recommended Operating Conditions 4.3 DC Characteristics (3.3 V, 25 °C) Table 7: DC Characteristics (3.3 V, 25 °C)

Cont'd on next page

Table 7 - cont'd from previous page

PRELIMINARY 1 VDD is the I/O voltage for pins of a particular power domain. 2 V OH and V OL are measured using high-impedance load. 4.4 Current Consumption Characteristics Owing to the use of advanced power-management technologies, the module can switch between different power modes. For details on different power modes, please refer to Section RTC and Low-Power Management in ESP32-S3 Series Datasheet . Table 8: Current Consumption Depending on RF Modes 1 The current consumption measurements are taken with a 3.3 V supply at 25 °C of ambient temperature at the RF port. All transmitters' measurements are based on a 100% duty cycle. 2 The current consumption figures in RX mode are for cases where the peripherals are disabled and the CPU idle. Note that the data in Table 9 only applies to the module variants that embed ESP32-S3. Table 9: Current Consumption Depending on Work Modes

PRELIMINARY Figure 10: ESP32­S3­WROOM­1 Recommended PCB Land Pattern

PRELIMINARY Figure 11: ESP32­S3­WROOM­1U Recommended PCB Land Pattern