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ESP32-S3 Datasheet(PDF) 21 Page - ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD.

Part # ESP32-S3
Description  2.4 GHz Wi-Fi Bluetooth® LE SoC Supporting IEEE 802.11 b/g/n (2.4 GHz Wi-Fi) and Bluetooth® 5 (LE)
PDF  69 Pages
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Manufacturer  ESPRESSIF [ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD.]
Direct Link  https://www.espressif.com/
Logo ESPRESSIF - ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD.

ESP32-S3 Datasheet(HTML) 21 Page - ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD.

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2
Pin Definition
SPIHD
SIO3
ESP32-S3R8 / ESP32-S3R8V
In-package PSRAM (8 MB, Octal SPI)
SPICLK
CLK
SPICS1
CE#
SPID
DQ0
SPIQ
DQ1
SPIWP
DQ2
SPIHD
DQ3
GPIO33
DQ4
GPIO34
DQ5
GPIO35
DQ6
GPIO36
DQ7
GPIO37
DQS/DM
2.7 Power Scheme
ESP32-S3 has six input power pins:
• VDDA1
• VDDA2
• VDD3P3 × 2
• VDD3P3_RTC
• VDD3P3_CPU
And one input/output power pin:
• VDD_SPI
VDDA1, VDDA2, and the two VDD3P3 pins are the input power supply for the analog domain.
VDD_SPI can be an input power supply or output power supply. It can be powered by Flash Voltage Regulator
(nominal 1.8 V) or by VDD3P3_RTC via RSP I (nominal 3.3 V). As the in-package flash/PSRAM in ESP32-S3FN8,
ESP32-S3R2, and ESP32-S3R8 operates at 3.3 V, VDD_SPI must be powered by VDD3P3_RTC via RSP I .
Software can power off VDD_SPI to minimize current leakage of flash in Deep-sleep mode.
VDD3P3_RTC is the input power supply for Low Power Voltage Regulator that powers the RTC domain.
VDD3P3_CPU and VDD3P3_RTC power Digital System Voltage Regulator at the same time that further powers
the Digital System domain.
VDD3P3_RTC is the input power supply for RTC IO.
VDD3P3_CPU is the input power supply for Digital IO.
VDD_SPI is the input power supply for SPI IO.
Either VDD_SPI or VDD3P3_CPU can be selected as the input power supply for SPI/Digital IO.
The power scheme diagram is shown in Figure 2-2.
Espressif Systems
21
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ESP32-S3 Series Datasheet v1.3



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