S/AI
Hardware Reference
Page 13 of 52
The following table shows the pin states of S during reset active.
Pin Name
State: S
EXT-RES#
Input with pull-up
(1)
XL-IN/SLCK
Input floating (disconnected)
XL-OUT
Input floating (disconnected)
UART-TXD
Input floating (disconnected)
UART-RXD
Input floating (disconnected)
UART-RTS#
Input floating (disconnected) with pull-up resistor 470k
Ω
(2)
UART-CTS#
Input floating (disconnected)
IUR-OUT#
Input floating (disconnected)
IUR-IN#
Input floating (disconnected)
GPIO[0:14]
Input floating (disconnected)
TESTMODE#
Input floating (disconnected)
BOOT0
Input floating (disconnected)
SWDIO
Input with pull-up
(1)
SWCLK
Input with pull-down
(1)
(1)
pull-up, pull-down: R
PU,
R
PD
is typ. 13k
Ω (11kΩ to 16kΩ)
(2)
a discrete resistor is used
Table 2: Pin States during Reset
The pin states as indicated in Table 2 are kept until hardware initialization has started.
