STM6520 STMicroelectronics, STM6520 Datasheet - Page 7

• Manufacturer Part Number: STM6520
• Description: Push-button controlled smart reset
• Manufacturer: STMicroelectronics

Specifications of STM6520

• Dual Smart Reset™ Push-button Inputs, With User-selectable Extended Reset Setup Delay (by Two-state Input Logic): tSRC = 6, 10 s (min.)
• Operating Temperature: –30 °C to +85 °C
• Tdfn8 Package: 2 mm x 2 mm x 0.75 mm

STM6520
3
3.1
3.2
3.3
3.4
3.5
Figure 3.
SR1
DSR
SR0
SR1
DSR
SR0
Pin descriptions
Power supply (V
This pin is used to provide power to the Smart Reset
capacitor is recommended to be connected between the V
STM6520 device as possible.
Ground (V
This is the ground pin for the device.
Smart Reset™ inputs (SR0, SR1)
Push-button Smart Reset™ inputs, active-low. Both inputs need to be asserted
simultaneously for at least t
User-selectable Smart Reset™ delay (DSR)
An input that allows the user to program the setup time (t
buttons need to be pressed to activate the reset outputs. Controlled by different voltage
levels on the DSR pin: when connected to ground, t
t
permanently connected to V
Reset outputs (RST1, RST2)
RST1 is active-low, open-drain, RST2 active-high, push-pull. Neither fixed nor minimum
output reset pulse duration, nor power-on reset is implemented. Releasing any of the push-
buttons while reset outputs are active, causes both outputs to deassert.
Block diagram
SRC
Smart Reset TM
Smart Reset TM
= 12.5 s (typ.). DSR is a DC-type input, intended to be either permanently grounded or
two-state logic
t SRC selector
two-state logic
t SRC selector
reset logic
reset logic
SS
)
CC
SRC
)
CC
Doc ID 15953 Rev 6
.
to activate the reset outputs.
t SRC
t SRC
Oscillator
Oscillator
SRC
™
device. A 0.1 µF ceramic decoupling
Output
= 7.5 s, when connected to V
Output
SRC
logic
logic
CC
) for which both the push-
and V
SS
pins, as close to the
Pin descriptions
RST1
RST2
RST1
RST2
AM00436V2
AM00436V2
CC
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,