This CPU board is Ver.2 for use with ESP-PROG.

Since the writing circuit of ESP-PROG is used, it is a simple circuit.

The power supply circuit and reset circuit were implemented.

Board Size is 63mmx48mm

*CPU: ESP32-WROOM-32E or ESP32-WROVER-E

*JTAG and Serial Connectors for ESP-PROG.(1.27mm pitch 6P/10P)

*SMD part size is 0805(2012M)

*** Changes from Ver.1 board.

 Changed JTAG and serial connector to 1.27mm pitch.

 Change other than connectors and switches to SMD.

 Removed I2C Level shifter.

 Mounted three 3.3V-I2c connectors.

 Two holes for stencil positioning.

 C1-C3: 22uF/10V

 C4-C6: 0.1uF/50V

 D1: Power LED(Red)

 D2: IO02 LED(Green)

 D3: 1N5819W

 J1: Jack-DC5V

 J2,J3,J6: JST_XH_B2B-XH-A

 J4: IDC-Header_2x05(1.27mm pitch)

 J5: IDC-Header_2x03(1.27mm pitch)

 J7,J8,J9,J10:JST_XH_B6B-XH-A

 J11-J13: JST_XH_B4B-XH-A

 R1,R2: 1K

 R3: 10K

 SW1 SW_Push

 U1: ADP3338AKCZ-3.3

 U2: ESP32-WROOOM-32E / ESP32-WROVER-E