SONIX SN32F264 - Pin Circuit Diagrams

SN32F260 Series
32-Bit Cortex-M0 Micro-Controller
SONiX TECHNOLOGY CO., LTD Page 21 Version 1.5
1.6 PIN CIRCUIT DIAGRAMS
 Normal Bi-direction I/O Pin.
RPU
Output
Latch
Pin
GPIOn_CFG
I/O Input Bus
I/O Output Bus
GPIOPn_MODE
RPD
GPIOn_CFGGPIOPn_MODE
 Bi-direction I/O Pin Shared with Specific Digital Input Function, e.g. SPI, I2C…
RPU
Output
Latch
Pin
GPIOn_CFG
I/O Input Bus
Output Bus
GPIOPn_MODE
RPD
GPIOn_CFG
GPIOPn_MODE
Specific Input Bus
Specific Input Function Control Bit
*. Specific Output
Function Control Bit
*. Some specific functions switch I/O direction directly, not through GPIOn_MODE register.
 Bi-direction I/O Pin Shared with Specific Digital Output Function, e.g. SPI, I2C…
RPU
Output
Latch
Pin
GPIOn_CFG
I/O Input Bus
Output Bus
GPIOPn_MODE
RPD
GPIOn_CFG
GPIOPn_MODE
Specific Output Bus
Specific Input Function Control Bit
*. Specific Output
Function Control Bit
*. Some specific functions switch I/O direction directly, not through GPIOn_MODE register.