PSH-C32

Overview

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)

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

PIN

PIN MAP

PIN	Name
1	CHIP_PU
2	SENSOR_VP
3	SENSOR_CAPP
4	SENSOR_CAPN
75	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.