Search found 8 matches

by Espressif_Kelly
Thu Oct 31, 2019 4:39 am
Forum: Hardware
Topic: ESP32-PICO-D4 Minimum Supply Voltage
Replies: 3
Views: 741

Re: ESP32-PICO-D4 Minimum Supply Voltage

Dear Alex, The voltage range of 2,3V to 3,6V listed in the datasheet is for each individual power supply pin. However, in actual application,we mostly use single power supply(VDD) and flash is connected to VDD_SDIO for low power consideration. Operating voltage of the flash that integrated in ESP32-...
by Espressif_Kelly
Tue Nov 13, 2018 9:25 am
Forum: Hardware
Topic: ESP32D0WD RTC 32.768KHz
Replies: 1
Views: 969

Re: ESP32D0WD RTC 32.768KHz

Hi PaulShaw,

What about the driving level of the 32.768kHz crystal that you use?

The rtc_clk.c can be used to adjust the drive strength, but this file will only be included in our next version of IDF.

Currently, you can apply rtc_clk.c by sending e-mail to our FAE.

Thanks.
by Espressif_Kelly
Mon Feb 13, 2017 3:52 am
Forum: Hardware
Topic: esp32使用emac时,gpio0作为EXT_OSC_CLK,如何避免进入下载模式
Replies: 18
Views: 8950

Re: esp32使用emac时,gpio0作为EXT_OSC_CLK,如何避免进入下载模式

Hi, Please help confirm if GPIO0 is connected to output of the oscillator or clkout of the phy? You can try to connect GPIO0 to clk output of the oscillator and make enable pin of the oscillator can be controlled by ESP32. When ESP32 is powered on or reset, EN_OSC should be low at first and once app...
by Espressif_Kelly
Tue Feb 07, 2017 7:44 am
Forum: Hardware
Topic: esp32使用emac时,gpio0作为EXT_OSC_CLK,如何避免进入下载模式
Replies: 18
Views: 8950

Re: esp32使用emac时,gpio0作为EXT_OSC_CLK,如何避免进入下载模式

Hi,

You can add an external pull-up resistor of GPIO0 to make sure that it won't be pulled down by EXT_OSC_CLK.

If problem still exists, please let us know.

Thanks.
by Espressif_Kelly
Tue Feb 23, 2016 7:20 am
Forum: Hardware
Topic: Is there CAN interface in ESP32?
Replies: 11
Views: 9662

Re: Is there CAN interface in ESP32?

Hi, We recommend you to use SPI interface of ESP32 to connect external chip with CAN controller and CAN driver integrated. Because current beta version ESP31 has no CAN controller internally and only ESP32 does have CAN controller. BTW, besides SPI interface of ESP31/ESP32 can be used to connect spi...
by Espressif_Kelly
Wed Feb 17, 2016 7:14 am
Forum: Hardware
Topic: ADC1_GPIO37 ADC1_GPIO38 ./. SENSOR_CAPP SENSOR_CAPN
Replies: 3
Views: 4491

Re: ADC1_GPIO37 ADC1_GPIO38 ./. SENSOR_CAPP SENSOR_CAPN

Dear Rudi, C11 and C12 can be used as the sample capacitors for internal switching amplifier. Application scenario 1: with C11 and C12 You can get a high-precision amplifier which can sense the tiny voltage between SENSOR_VP and SENSOR_VN. Application scenario 2:without C11 and C12 You can get 4 cha...
by Espressif_Kelly
Wed Dec 16, 2015 8:13 am
Forum: Hardware
Topic: ESP318->ESP32 on ESP_Module_Testboard pins
Replies: 2
Views: 4216

Re: ESP318->ESP32 on ESP_Module_Testboard pins

Dear Rudi, There is something wrong with silkscreen of the first version of ESP_Module. P.S. The second version of ESP_Module has already fixed this error. The actual pin order of ESP_Module is just as shown in the ESP_Module_Testboard which is GPIO5, GPIO17, GPIO16. Please neglect the silkscreen of...

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