Specifications

4 . PERIP H ERALS AN D SENSO RS
4. Peripherals and Sensors
4.1 Peripherals and Sensors Description
Table 7: Description of Peripherals and Sensors
Interface
Signal
Pin
Function
ADC
ADC1_CH0
SENSOR_VP
Two 12-bit SAR ADCs
ADC1_CH3
SENSOR_VN
ADC1_CH4
IO32
ADC1_CH5
IO33
ADC1_CH6 IO34
ADC1_CH7 IO35
ADC2_CH0 IO4
ADC2_CH1
IO0
ADC2_CH2
IO2
ADC2_CH3
IO15
ADC2_CH4 IO13
ADC2_CH5 IO12
ADC2_CH6 IO14
ADC2_CH7
IO27
ADC2_CH8
IO25
ADC2_CH9
IO26
Ultra-Low Noise
Analog Pre-Amplifier
SENSOR_VP IO36 Provides about 60 dB gain by using larger
capacitors on PCB
SENSOR_VN
IO39
DAC
DAC_1
IO25
Two 8-bit DACs
DAC_2 IO26
Touch Sensor
TOUCH0
IO4
Capacitive touch sensors
TOUCH1
IO0
TOUCH2 IO2
TOUCH3 IO15
TOUCH4 IO13
TOUCH5
IO12
TOUCH6
IO14
TOUCH7
IO27
TOUCH8
IO33
TOUCH9 IO32
SD/SDIO/MMC Host
Controller
HS2_CLK
MTMS
Supports SD memory card V3.01 standard
HS2_CMD
MTDO
HS2_DATA0
IO2
HS2_DATA1 IO4
HS2_DATA2 MTDI
HS2_DATA3
MTCK
Espressif Systems 9 ESP01 Datasheet V1.0