Specifications

20
PB11
I/O
GPIO,SDPG,SPDIF_OUT
21
no
no
no
22
no
no
no
23
PB8
I/O
GPIO,AMUX1R,SPI2_DIA,ADC8,CLKOUT1
24
PB5
I/O
GPIO,PWM3,CAP1,UART0TXC,UART0RXC
25
PB1
I/O
GPIO,SPI1DOA
26
PB0
I/O
GPIO,SPI1CLKA,UART1TXA,PWMCH1H
27
GND
P
Power ground
Note: P refers to the power pin, i/o refers to the input and output pin, and I refers to the input
pin
4 Electrical parameters
4.1 Absolute electrical parameters
parameter
describe
Min
Max
Unit
T
stg
Storage temperature
-65
+150
°C
VBAT
Supply Voltage
2.2
5.5
V
V
3.3IO
3.7V IO Input Voltage
-0.3
V
3.3IO
+0.3
V
4.2 Working conditions
Parameter
describe
Min
Typ
Max
Unit
T
amb
Ambient Temperature
-20
-
+70
°C
VBAT
Supply Voltage
2.2
3.7
5.5
V
V
3.3IO
3.3V IO Output Voltage
-
3.3
V
3.3IO
+0.3
V
V
DACVDD
DAC Voltage
-
2.7
-
V
I
L3.3
Loading current
-
-
150
mA
V
IL
Low-Level Input Voltage
-0.3
-
0.3* V
3.3IO
V
V
IH
High-Level Input Voltage
0.7*V
3.3IO
-
V
3.3IO
+0.3
V
V
OL
Low-Level Output Voltage
-
-
0.33
V
V
OH
High-Level Output Voltage
2.7
-
-
V
4.3Internal Resistor Characteristics
Port
General
Output
High
Drive
Internal
Pull-Up
Resistor
Internal
Pull-Down
Resistor
Comment
PA0、PA1
8mA
24mA
10K
10K
1、PB1 default pull up