ESPRESSIF SYSTEMS RIGEL User Manual

Wi-Fi& Bluetooth Internet of Things Module

RIGEL

Datasheet

Including:

W11261889

Version 1.3

Espressif Systems

Copyright © 2018

www.espr

essif.com

This document introduces the specifications of RIGEL REV C.

Release Notes

About This Document

Date Version Release notes

2018.05

2018.10 V1.1

2018.08 V1.2

2018.10 V1.3

2018.11 V1.4 Added information on PCB antennas in Chapter 1.

V1.0 First release.

Updated the part numbers;

Updated Table 4-4. Wi-Fi Radio Characteristics;

Updated Schematics.

Updated the flash size from 8 MB to 16 MB;

Upgraded REV B to REV C.

Added information on IPEX/U.FL antenna in Chapter 1;

Added notes on storage temperature range and operating temperature range
in Chapter 4;

Updated Figure 6-1. Dimensions of RIGEL REV C.

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Certification

Download certificates for Espressif products from www.espressif.com/en/

certificates.

T

able of Contents

1.

Overview 1................................................................................................................................

2. Pin Description 3......................................................................................................................

2.1.

Pin Layout! 3"..................................................................................................................................

2.2. Pin List! 4".......................................................................................................................................

3.

Peripherals and Interfaces 6...................................................................................................

3.1. Radio/SOC & Class B Micro! 6"......................................................................................................

3.2. Radio/SOC & WIN Bus! 6"...............................................................................................................

3.3. Interface—Display! 6"......................................................................................................................

3.4. Interface—JATG! 6".........................................................................................................................

3.5. Interface—Programming! 6"............................................................................................................

3.6. Interface—Audio! 7"........................................................................................................................

4. Electrical Characteristics 8......................................................................................................

4.1.

Absolute Maximum Ratings! 8".......................................................................................................

4.2. Recommended Operating Conditions! 8".......................................................................................

4.3. DC Characteristics (3.3 V, 25 °C)! 8"...............................................................................................

4.4. Wi-Fi Radio Characteristics! 9".......................................................................................................

5.

Dimensions ..........................................................................................................................11

1. Overview

!

1. Overview

RIGEL REV C is an ESP32-based customized module developed by Espressif for
Whirlpool.

•

W11261889, which features two PCB antennas plus one IPEX/U.FL antenna.

RIGEL REV C features an 16 MB external flash. The ordering information of RIGEL REV C is
listed in Table 1-1.

Table 1-1. Ordering Information of RIGEL REV C

Part number Embedded chip Flash Antenna

W11261889 ESP32-D0WD 16 MB 2 × PCB antennas, 1 × IPEX/U.FL antenna

At the core of the module is ESP32-D0WD chip, one of the SoCs among the ESP32 series.
The chip contains two low-power Xtensa® 32-bit LX6 microprocessors that can be
individually controlled, and the CPU clock frequency is adjustable from 80 MHz to 240

MHz. The user may also power off the CPU and make use of the low-power co-processor
to constantly monitor the peripherals for changes or crossing of thresholds. The chip
integrates a rich set of peripherals, ranging from capacitive touch sensors, Hall sensors, SD

2

card interface, Ethernet, high-speed SPI, UART, I

S and I2C.

ESP32-D0WD's internal memory includes:

448 KB of ROM for booting and core functions.

•

•

520 KB of on-chip SRAM for data and instructions.

• 8 KB of SRAM in RTC, which is called RTC FAST Memory and can be used for data

storage; it is accessed by the main CPU during RTC Boot from the Deep-sleep
mode.

8 KB of SRAM in R

•

the co-pr

1 Kbit of eFuse: 256 bits are used for the system (MAC address and chip

•

ocessor during the Deep-sleep mode.

TC, which is called R

TC SLOW Memory and can be accessed by

configuration) and the remaining 768 bits are reserved for customer applications,
including flash-encryption and Chip-ID.

📖 Note:

For more information on ESP32, please refer to ESP32 Datasheet.

The two PCB (slot) antennas supported on RIGEL REV C have the following specifications
listed in Table 1-2:

Espressif Systems !1/!11

2018.10

Table 1-2. Specifications of Slot Antennas

Description Slot antenna 1 Slot antenna 2

Storage temperature range –40 °C ~ +150 °C

Operating temperature range –40 °C ~ +85 °C

Frequency range 2.4 GHz ~ 2.5 GHz

Peak gain 3.56 dBi 4.20 dBi

Total efficiency 71.91% 87.43%

Figure 1-1 shows the two slot antennas.

Espressif Systems

2/!11

!

2018.10