Search found 11 matches

by ESP_Peter
Tue Jul 07, 2020 4:32 am
Forum: Hardware
Topic: ESP32-U4WDH embedded Flash and Eth LAN8720
Replies: 1
Views: 50

Re: ESP32-U4WDH embedded Flash and Eth LAN8720

Please refer to following notes in "2.2 Pin Description " of ESP32 chip's datasheet. The pin-pin mapping between ESP32-D2WD/ESP32-U4WDH and the embedded flash is as follows: GPIO16 = CS#, GPIO17 = IO1/DO, SD_CMD = IO3/HOLD#, SD_CLK = CLK, SD_DATA_0 = IO2/WP#, SD_DATA_1 = IO0/DI. The pins used for em...
by ESP_Peter
Mon Mar 30, 2020 2:56 am
Forum: Hardware
Topic: Can't buy memory PSRAM-32
Replies: 5
Views: 2282

Re: Can't buy memory PSRAM-32

The latest PSRAM is ESP-PSRAM64 (1.8v) and ESP-PSRAM64H (3.3v) .It is supported in IDF SDK.
https://www.espressif.com/sites/default ... eet_en.pdf
by ESP_Peter
Fri Feb 28, 2020 1:06 pm
Forum: Hardware
Topic: ESP32 software behaviour during radiated emissions tests
Replies: 2
Views: 1704

Re: ESP32 software behaviour during radiated emissions tests

In the radiated emissions testing, you should select the "TX Continue" test mode in the ESP RF Test Tool . The duty cycle is above 90% in the "TX Continue" mode.
by ESP_Peter
Sat Feb 08, 2020 9:36 am
Forum: 硬件问题讨论
Topic: PCB图纸中绿色(NC)的含义
Replies: 1
Views: 5699

Re: PCB图纸中绿色(NC)的含义

你好,绿色NC表示PCB上有预留焊盘位置,实际器件没有在PCB上贴片。
by ESP_Peter
Wed Dec 11, 2019 9:01 am
Forum: Hardware
Topic: MTDI confusion on ESP32 Pico D4
Replies: 2
Views: 555

Re: MTDI confusion on ESP32 Pico D4

Hi bmbouter, 1. The current ESP32-PICO-D4 integrated a 3.3v SPI flash , so the MTDI/IO12 should be bit "0" ,when the ESP32 boot up. We reserved the resistor R23 (NC: not connection) pad on the PCB, but The resistor R23 is not mounted on the PCB , it is only reserved for new ESP32-PICO chip with 1.8v...
by ESP_Peter
Wed Dec 11, 2019 3:41 am
Forum: General Discussion
Topic: ESP32-PICO-D4 advise
Replies: 3
Views: 559

Re: ESP32-PICO-D4 advise

Hi Eyalasko, 1. ESP32-PICO-D4 doesn't include the antenna , so you need to do certification testing based on your PCB. 2. You can debug and flash firmware via UART0 of ESP32-PICO-D4 . It like package a ESP32 module in the SIP, you can reference schematic of internal circuit in data sheet of ESP32-PI...
by ESP_Peter
Wed Nov 06, 2019 3:02 am
Forum: General Discussion
Topic: WROVER module marking
Replies: 1
Views: 440

Re: WROVER module marking

We have added 6-bit code on bottom of metal cover from July 15, 2019. The last 2 bit code include the Flash size information . The code of flash size is list as following. If your module is shipped before the date, you can use flash download tool to read the Flash size. Flash Size code 4 MB (32 Mbit...
by ESP_Peter
Fri Oct 11, 2019 1:56 pm
Forum: ESP-IDF 中文讨论版
Topic: ESP-WROVER-KIT-VB 开发板 屏
Replies: 2
Views: 986

Re: ESP-WROVER-KIT-VB 开发板 屏

这个LCD的驱动芯片是 ILI9341 ,可以从如下链接的ESP32-WROVER-Kit原理图里看到LCD屏的接口连接。
https://docs.espressif.com/projects/esp ... ver-kit-v3
by ESP_Peter
Wed Oct 09, 2019 4:32 am
Forum: Hardware
Topic: ESP32 Ethernet kit V1.1
Replies: 4
Views: 1549

Re: ESP32 Ethernet kit V1.1

What is the PHY chip on your Ethernet board? Would you take a photo of your board?
by ESP_Peter
Thu Jul 18, 2019 2:31 am
Forum: General Discussion
Topic: ESP32-DEVKITC32D replaced by ESP323-DEVKITC32D-F ?
Replies: 7
Views: 1433

Re: ESP32-DEVKITC32D replaced by ESP323-DEVKITC32D-F ?

The male header version will not be replaced. Both the male & female header version is available in Espressif's product list.

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