TDA5230 Datasheet, PDF (25/186 Pages) Infineon Technologies AG – Universal Low Power ASK/FSK Single Conversion Multi-Channel Image-Reject Receiver

TDA523x
Functional Description
2.4.2 Chip Reset
Power down and power on are controlled by the P_ON pin. A low at this pin keeps the
IC in Power Down Mode. All voltage regulators and the internal biasing are switched off.
A high at the P_ON pin activates the appropriate voltage regulators and the internal
biasing of the chip. A power up reset is generated at the same time.
.
Supply-Voltage
at Pin VDDD
3V
Reset- / Brownout-
Threshold (typ. 2.45V)
Functional-
Threshold (typ. 2V)
Internal Reset
Voltage at Pin
NINT/NSTR
3V
Reset- / Brownout-
Threshold (typ. 2.45V)
Functional-
Threshold (typ. 2V)
t
t_Reset
Supply-Voltage falls below
Reset- / Brownout-Threshold
Level on Pin
NINT/NSTR
is undefined
Supply-Voltage
falls below
Functional-Threshold
A ‚LOW’ is generated
at PIN NINT/NSTR
Figure 13 Reset Behavior
A ‚LOW’ is
generated at
PIN NINT/NSTR
A ‚HIGH’ is
generated at
PIN NINT/NSTR
Supply-Voltage
rises above
Functional-Threshold
t
µC reads
Interrupt-
Status-Register
A ‚LOW’ is
generated at
PIN NINT/NSTR
Data Sheet
21
Version 4.0, 2007-06-01