STM6522 Pin descriptions
Doc ID 17045 Rev 3 9/25
2 Pin descriptions
2.1 Power supply (V
CC
)
This pin is used to provide the power to the device. A 0.1 µF decoupling ceramic capacitor is
recommended to be connected between V
CC
and V
SS
pins.
2.2 Ground (V
SS
)
This is the supply ground for the device.
2.3 Primary Smart Reset™ input (SR0)
The primary push-button Smart Reset™ input, active-low pin is connected to the push-
button switch. The input logic voltage levels are set to a fixed voltage level and have no
internal pull-up resistor.
2.4 Secondary Smart Reset™ input (SR1)
The secondary push-button Smart Reset™ input, active-low pin is connected to the second
push-button switch. The input logic voltage levels are set to a fixed voltage level and have no
internal pull-up resistor. Keeping both Smart Reset™ inputs SR0
and SR1 active for longer
than t
SRC
activates the reset output pulse.
Figure 7. STM6522 timing
Reset is asserted “low” right after the Smart Reset™ setup delay (t
SRC
) has been met and
returns to high after the t
REC
period.
AM04873v2
SR0
SR1
t
SRC
t
REC
RST1,
RST2
