PSH-C32

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Overview

PSH-C32 01.jpg

The PSH-C32 is a universal low-cost WiFi module designed by ITEAD, which adopts the highly integrated Wi-Fi chip ESP32 as MCU. Created by Espressif, the ESP32 is a new, low-cost SoC with Wi-Fi & dual-mode Bluetooth capabilities. ESP32 features at Xtensa dual-Core 32-bit Tensilica L108 MCU, operating at 160 or 240 MHz ( highest 250MHz), low-power consumption, multiple sleep modes and more. Compared to the previous generation ESP8266, ESP32 has more memory space and more I/O port for development. It is very ideal for wearable tech design.

Go shopping PSH-C32 WiFi Wireless Module(SKU: IM160913001)

Features

  • Support wireless 802.11 b/g/n/e/i
  • IEEE 802.11 standard security features all supported,including WFA/WPA/WPA2/WAPI
  • Support WPA/WPA2 /WP2-Enterprise /WPS encryption
  • Built-in TCP/IP protocol stack, support multi-way TCP Client connection
  • Support Wi-Fi Direct (P2P),P2P discovery,P2P GO mode and P2P power management
  • Bluetooth v4.2 complete standard, including BR/EDR and BLE
  • Support standard Class-1, Class-2, Class-3 without need for external power amplifier
  • Support rich Socket AT command
  • Support SDK fast programming
  • Support UART/GPIO data communication interface
  • Built-in 32-bit MCU, can also serve as the application processor
  • Supply voltage: 2.2V~3.6V, default single 3.3V power supply

Electrical Characteristics

PARAMETER Min Type Max Unit
Storage Temp. -40 Room Temperature 125
Working Voltage 2.8 3.3 3.6 V
I/O Vil/Vih -0.3/0.75VIO 0.25VIO/3.3 V
I/O Vpl/Voh N/0.8VIO 0.1VIO/N V
I/O Imax 12 mA

Hardware

PSH-C32-dimension.docx.jpg

PIN

PIN MAP

ESP32.jpg

PIN Name
1 CHIP_PU
2 SENSOR_VP
3 SENSOR_CAPP
4 SENSOR_CAPN
5 SENSOR_VN
6 VDET_1
7 VDET_2
8 32K_XP
9 32K_XN
10 GPIO25
11 GPIO26
12 GPIO27
13 GND
14 GND
15 MTMS
16 MTDI
17 MTCK
18 MTDO
19 GPIO2
20 GPIO0
21 GPIO4
22 GPIO16
23 GPIO17
24 NC
25 NC
26 NC
27 NC
28 NC
29 NC
30 GPIO5
31 GPIO18
32 GPIO23
33 GPIO19
34 GPIO22
35 U0RXD
36 U0TXD
37 GPIO21
38 VCC
39 VCC
40 GND
41 GND
42 GND

Strapping Pins

There are totally 6 Strapping pins in ESP32:

  • MTDI/GPIO12: internal pull-down
  • GPIO0: internal pull-up
  • GPIO2: internal pull-down
  • GPIO4: internal pull-down
  • MTDO/GPIO15: internal pull-up
  • GPIO5: internal pull-up

Pin Mode

Mode GPIO0 GPIO2
UART Download Low Low
Flash Boot High /

Confirm Function: After power up, level of 18 IO ports will auto-flip, the frequency is 1s:

               GPIO0,GPIO2,
               GPIO4,GPIO5,
               GPIO12,GPIO13,
               GPIO14,GPIO15,
               GPIO16,GPIO17,
               GPIO18,GPIO19,
               GPIO21,GPIO22,
               GPIO23,GPIO25,
               GPIO26,GPIO27

Connect the serial port, open the serial assistant, when the baudrate is 115200, it will display current number of SSID that can be searched and the first SSID name can be searched.

Useful Link

https://esp32.com

Download

PSH-C32 Schematic

ESP32 Datasheet