# SoC Capabilities

[中文]

This section lists the macro definitions of the ESP32's SoC hardware capabilities. These macros are commonly used by conditional-compilation directives (e.g., `#if`) in ESP-IDF to determine which hardware-dependent features are supported, thus control what portions of code are compiled.

Warning

These macro definitions are currently not considered to be part of the public API, and may be changed in a breaking manner (see ESP-IDF Versions for more details).

## API Reference

### Header File

- components/soc/esp32/include/soc/soc_caps.h

- This header file can be included with:

  >     #include "soc/soc_caps.h"

### Macros

SOC_CAPS_ECO_VER_MAX

SOC_ADC_SUPPORTED

SOC_DAC_SUPPORTED

SOC_UART_SUPPORTED

SOC_MCPWM_SUPPORTED

SOC_GPTIMER_SUPPORTED

SOC_SDMMC_HOST_SUPPORTED

SOC_BT_SUPPORTED

SOC_PCNT_SUPPORTED

SOC_PHY_SUPPORTED

SOC_WIFI_SUPPORTED

SOC_SDIO_SLAVE_SUPPORTED

SOC_TWAI_SUPPORTED

SOC_EFUSE_SUPPORTED

SOC_EMAC_SUPPORTED

SOC_ULP_SUPPORTED

SOC_CCOMP_TIMER_SUPPORTED

SOC_RTC_FAST_MEM_SUPPORTED

SOC_RTC_SLOW_MEM_SUPPORTED

SOC_RTC_MEM_SUPPORTED

SOC_I2S_SUPPORTED

SOC_RMT_SUPPORTED

SOC_SDM_SUPPORTED

SOC_GPSPI_SUPPORTED

SOC_LEDC_SUPPORTED

SOC_I2C_SUPPORTED

SOC_SUPPORT_COEXISTENCE

SOC_AES_SUPPORTED

SOC_MPI_SUPPORTED

SOC_SHA_SUPPORTED

SOC_FLASH_ENC_SUPPORTED

SOC_SECURE_BOOT_SUPPORTED

SOC_TOUCH_SENSOR_SUPPORTED

SOC_BOD_SUPPORTED

SOC_ULP_FSM_SUPPORTED

SOC_CLK_TREE_SUPPORTED

SOC_MPU_SUPPORTED

SOC_WDT_SUPPORTED

SOC_SPI_FLASH_SUPPORTED

SOC_RNG_SUPPORTED

SOC_LIGHT_SLEEP_SUPPORTED

SOC_DEEP_SLEEP_SUPPORTED

SOC_LP_PERIPH_SHARE_INTERRUPT

SOC_PM_SUPPORTED

SOC_DPORT_WORKAROUND

SOC_DPORT_WORKAROUND_DIS_INTERRUPT_LVL

SOC_XTAL_SUPPORT_26M

SOC_XTAL_SUPPORT_40M

SOC_XTAL_SUPPORT_AUTO_DETECT

SOC_ADC_RTC_CTRL_SUPPORTED

  < SAR ADC Module

SOC_ADC_DIG_CTRL_SUPPORTED

SOC_ADC_DMA_SUPPORTED

SOC_ADC_DIG_SUPPORTED_UNIT(UNIT)

SOC_ADC_PERIPH_NUM

SOC_ADC_CHANNEL_NUM(PERIPH_NUM)

SOC_ADC_MAX_CHANNEL_NUM

SOC_ADC_ATTEN_NUM

  Digital

SOC_ADC_DIGI_CONTROLLER_NUM

SOC_ADC_PATT_LEN_MAX

SOC_ADC_DIGI_MIN_BITWIDTH

SOC_ADC_DIGI_MAX_BITWIDTH

SOC_ADC_DIGI_RESULT_BYTES

SOC_ADC_DIGI_DATA_BYTES_PER_CONV

SOC_ADC_DIGI_MONITOR_NUM

SOC_ADC_SAMPLE_FREQ_THRES_HIGH

SOC_ADC_SAMPLE_FREQ_THRES_LOW

  RTC

SOC_ADC_RTC_MIN_BITWIDTH

SOC_ADC_RTC_MAX_BITWIDTH

  ADC power control is shared by PWDET

SOC_ADC_SHARED_POWER

SOC_SHARED_IDCACHE_SUPPORTED

SOC_IDCACHE_PER_CORE

SOC_CPU_CORES_NUM

SOC_CPU_INTR_NUM

SOC_CPU_HAS_FPU

SOC_HP_CPU_HAS_MULTIPLE_CORES

SOC_CPU_BREAKPOINTS_NUM

SOC_CPU_WATCHPOINTS_NUM

SOC_CPU_WATCHPOINT_MAX_REGION_SIZE

SOC_DAC_CHAN_NUM

SOC_DAC_RESOLUTION

SOC_DAC_DMA_16BIT_ALIGN

SOC_GPIO_PORT

SOC_GPIO_PIN_COUNT

SOC_GPIO_VALID_GPIO_MASK

SOC_GPIO_VALID_OUTPUT_GPIO_MASK

SOC_GPIO_IN_RANGE_MAX

SOC_GPIO_OUT_RANGE_MAX

SOC_GPIO_VALID_DIGITAL_IO_PAD_MASK

SOC_GPIO_CLOCKOUT_BY_IO_MUX

SOC_GPIO_CLOCKOUT_CHANNEL_NUM

SOC_GPIO_SUPPORT_HOLD_IO_IN_DSLP

SOC_I2C_NUM

SOC_HP_I2C_NUM

SOC_I2C_FIFO_LEN

  I2C hardware FIFO depth

SOC_I2C_CMD_REG_NUM

  Number of I2C command registers

SOC_I2C_SUPPORT_SLAVE

SOC_I2C_SUPPORT_APB

SOC_I2C_SUPPORT_10BIT_ADDR

SOC_I2C_STOP_INDEPENDENT

SOC_I2S_NUM

SOC_I2S_HW_VERSION_1

SOC_I2S_SUPPORTS_APLL

SOC_I2S_SUPPORTS_PLL_F160M

SOC_I2S_SUPPORTS_PDM

SOC_I2S_SUPPORTS_PDM_TX

SOC_I2S_PDM_MAX_TX_LINES

SOC_I2S_SUPPORTS_PDM_RX

SOC_I2S_PDM_MAX_RX_LINES

SOC_I2S_SUPPORTS_ADC_DAC

SOC_I2S_SUPPORTS_ADC

SOC_I2S_SUPPORTS_DAC

SOC_I2S_SUPPORTS_LCD_CAMERA

SOC_I2S_MAX_DATA_WIDTH

SOC_I2S_TRANS_SIZE_ALIGN_WORD

SOC_I2S_LCD_I80_VARIANT

SOC_LCD_I80_SUPPORTED

  Intel 8080 LCD is supported

SOC_LCD_I80_BUSES

  Both I2S0/1 have LCD mode

SOC_LCD_I80_BUS_WIDTH

  Intel 8080 bus width

SOC_LEDC_HAS_TIMER_SPECIFIC_MUX

SOC_LEDC_SUPPORT_APB_CLOCK

SOC_LEDC_SUPPORT_REF_TICK

SOC_LEDC_SUPPORT_HS_MODE

SOC_LEDC_TIMER_NUM

SOC_LEDC_CHANNEL_NUM

SOC_LEDC_TIMER_BIT_WIDTH

SOC_MCPWM_GROUPS

  2 MCPWM groups on the chip (i.e., the number of independent MCPWM peripherals)

SOC_MCPWM_TIMERS_PER_GROUP

  The number of timers that each group has.

SOC_MCPWM_OPERATORS_PER_GROUP

  The number of operators that each group has.

SOC_MCPWM_COMPARATORS_PER_OPERATOR

  The number of comparators that each operator has.

SOC_MCPWM_GENERATORS_PER_OPERATOR

  The number of generators that each operator has.

SOC_MCPWM_TRIGGERS_PER_OPERATOR

  The number of triggers that each operator has.

SOC_MCPWM_GPIO_FAULTS_PER_GROUP

  The number of GPIO fault signals that each group has.

SOC_MCPWM_CAPTURE_TIMERS_PER_GROUP

  The number of capture timers that each group has.

SOC_MCPWM_CAPTURE_CHANNELS_PER_TIMER

  The number of capture channels that each capture timer has.

SOC_MCPWM_GPIO_SYNCHROS_PER_GROUP

  The number of GPIO synchros that each group has.

SOC_MMU_PERIPH_NUM

SOC_MMU_LINEAR_ADDRESS_REGION_NUM

SOC_MPU_CONFIGURABLE_REGIONS_SUPPORTED

SOC_MPU_MIN_REGION_SIZE

SOC_MPU_REGIONS_MAX_NUM

SOC_MPU_REGION_RO_SUPPORTED

SOC_MPU_REGION_WO_SUPPORTED

SOC_PCNT_GROUPS

SOC_PCNT_UNITS_PER_GROUP

SOC_PCNT_CHANNELS_PER_UNIT

SOC_PCNT_THRES_POINT_PER_UNIT

SOC_RMT_GROUPS

  One RMT group

SOC_RMT_TX_CANDIDATES_PER_GROUP

  Number of channels that capable of Transmit in each group

SOC_RMT_RX_CANDIDATES_PER_GROUP

  Number of channels that capable of Receive in each group

SOC_RMT_CHANNELS_PER_GROUP

  Total 8 channels

SOC_RMT_MEM_WORDS_PER_CHANNEL

  Each channel owns 64 words memory

SOC_RMT_SUPPORT_REF_TICK

  Support set REF_TICK as the RMT clock source

SOC_RMT_SUPPORT_APB

  Support set APB as the RMT clock source

SOC_RMT_CHANNEL_CLK_INDEPENDENT

  Can select different source clock for each channel

SOC_RTCIO_PIN_COUNT

SOC_RTCIO_INPUT_OUTPUT_SUPPORTED

SOC_RTCIO_HOLD_SUPPORTED

SOC_RTCIO_WAKE_SUPPORTED

SOC_SDM_GROUPS

SOC_SDM_CHANNELS_PER_GROUP

SOC_SDM_CLK_SUPPORT_APB

SOC_SPI_HD_BOTH_INOUT_SUPPORTED

SOC_SPI_AS_CS_SUPPORTED

SOC_SPI_PERIPH_NUM

SOC_SPI_DMA_CHAN_NUM

SOC_SPI_PERIPH_CS_NUM(i)

SOC_SPI_MAX_CS_NUM

SOC_SPI_SUPPORT_CLK_APB

SOC_SPI_MAXIMUM_BUFFER_SIZE

SOC_SPI_MAX_PRE_DIVIDER

SOC_MEMSPI_SRC_FREQ_80M_SUPPORTED

SOC_MEMSPI_SRC_FREQ_40M_SUPPORTED

SOC_MEMSPI_SRC_FREQ_26M_SUPPORTED

SOC_MEMSPI_SRC_FREQ_20M_SUPPORTED

SOC_SPI_PERIPH_SUPPORT_MULTILINE_MODE(spi_host)

SOC_TIMER_GROUPS

SOC_TIMER_GROUP_TIMERS_PER_GROUP

SOC_TIMER_GROUP_COUNTER_BIT_WIDTH

SOC_TIMER_GROUP_TOTAL_TIMERS

SOC_TIMER_GROUP_SUPPORT_APB

SOC_LP_TIMER_BIT_WIDTH_LO

SOC_LP_TIMER_BIT_WIDTH_HI

SOC_TOUCH_SENSOR_VERSION

  Hardware version of touch sensor

SOC_TOUCH_SENSOR_NUM

SOC_TOUCH_SAMPLE_CFG_NUM

  The sample configuration number in total, each sampler can be used to sample on one frequency

SOC_TWAI_CONTROLLER_NUM

SOC_TWAI_BRP_MIN

SOC_TWAI_BRP_MAX

SOC_TWAI_CLK_SUPPORT_APB

SOC_TWAI_SUPPORT_MULTI_ADDRESS_LAYOUT

SOC_UART_NUM

SOC_UART_HP_NUM

SOC_UART_SUPPORT_APB_CLK

  Support APB as the clock source

SOC_UART_SUPPORT_REF_TICK

  Support REF_TICK as the clock source

SOC_UART_FIFO_LEN

  The UART hardware FIFO length

SOC_UART_BITRATE_MAX

  Max bit rate supported by UART

SOC_SPIRAM_SUPPORTED

SOC_SPI_MEM_SUPPORT_CONFIG_GPIO_BY_EFUSE

SOC_SHA_SUPPORT_PARALLEL_ENG

SOC_SHA_ENDIANNESS_BE

SOC_SHA_SUPPORT_SHA1

SOC_SHA_SUPPORT_SHA256

SOC_SHA_SUPPORT_SHA384

SOC_SHA_SUPPORT_SHA512

SOC_MPI_MEM_BLOCKS_NUM

SOC_MPI_OPERATIONS_NUM

SOC_RSA_MAX_BIT_LEN

SOC_AES_SUPPORT_AES_128

SOC_AES_SUPPORT_AES_192

SOC_AES_SUPPORT_AES_256

SOC_SECURE_BOOT_V1

SOC_EFUSE_SECURE_BOOT_KEY_DIGESTS

SOC_FLASH_ENCRYPTED_XTS_AES_BLOCK_MAX

SOC_PHY_DIG_REGS_MEM_SIZE

SOC_PM_SUPPORT_EXT0_WAKEUP

SOC_PM_SUPPORT_EXT1_WAKEUP

SOC_PM_SUPPORT_EXT_WAKEUP

  Compatible to the old version of IDF

SOC_PM_SUPPORT_TOUCH_SENSOR_WAKEUP

  Supports waking up from touch pad trigger

SOC_PM_SUPPORT_RTC_PERIPH_PD

SOC_PM_SUPPORT_RTC_FAST_MEM_PD

SOC_PM_SUPPORT_RTC_SLOW_MEM_PD

SOC_PM_SUPPORT_RC_FAST_PD

SOC_PM_SUPPORT_VDDSDIO_PD

SOC_PM_SUPPORT_MODEM_PD

  Modem here includes wifi and btdm

SOC_CONFIGURABLE_VDDSDIO_SUPPORTED

SOC_PM_MODEM_PD_BY_SW

SOC_CLK_APLL_SUPPORTED

SOC_CLK_RC_FAST_D256_SUPPORTED

SOC_RTC_SLOW_CLK_SUPPORT_RC_FAST_D256

SOC_CLK_RC_FAST_SUPPORT_CALIBRATION

SOC_CLK_XTAL32K_SUPPORTED

  Support to connect an external low frequency crystal

SOC_SDMMC_USE_IOMUX

SOC_SDMMC_NUM_SLOTS

SOC_WIFI_WAPI_SUPPORT

  Support WAPI

SOC_WIFI_CSI_SUPPORT

  Support CSI

SOC_WIFI_MESH_SUPPORT

  Support WIFI MESH

SOC_WIFI_SUPPORT_VARIABLE_BEACON_WINDOW

  Support delta early time for rf phy on/off

SOC_WIFI_NAN_SUPPORT

  Support WIFI Aware (NAN)

SOC_BLE_SUPPORTED

  Support Bluetooth Low Energy hardware

SOC_BLE_MESH_SUPPORTED

  Support BLE MESH

SOC_BT_CLASSIC_SUPPORTED

  Support Bluetooth Classic hardware

SOC_BLE_DEVICE_PRIVACY_SUPPORTED

  Support BLE device privacy mode

SOC_BLUFI_SUPPORTED

  Support BLUFI

SOC_BT_H2C_ENC_KEY_CTRL_ENH_VSC_SUPPORTED

  Support Bluetooth Classic encryption key size configuration through vendor-specific HCI command

SOC_ULP_HAS_ADC

SOC_PHY_COMBO_MODULE

  Support Wi-Fi, BT and BLE

SOC_EMAC_RMII_CLK_OUT_INTERNAL_LOOPBACK

  REF RMII CLK output is looped back internally

Was this page helpful?

- Thank you! We received your feedback.
- If you have any comments, fill in Espressif Documentation Feedback Form.

- We value your feedback.
- Let us know how we can improve this page by filling in Espressif Documentation Feedback Form.