
I/O Software Control in Low-Power Flash Devices
8- 12
v1.1
I/O Function
Figure 8-9 shows an example of the I/O Function table included in the I/O bank report:
This table lists the number of input I/Os, output I/Os, bidirectional I/Os, and differential input and
output I/O pairs that use I/O and DDR registers.
Certain rules must be met to implement registered and DDR I/O functions (refer to the I/O
Structures section of the handbook for the device you are using and the
"DDR" section onI/O Technology
The I/O Technology table (shown in Figure 8-10) gives the values of VCCI and VREF (reference voltage) for all the I/O standards used in the design. The user should assign these voltages
appropriately.
Figure 8-9 I/O Function Table
Figure 8-10 I/O Technology Table