AT83EC5123 ATMEL Corporation, AT83EC5123 Datasheet - Page 138

• Manufacturer Part Number: AT83EC5123
• Description: (AT8xx512x) Smart Card Reader ICs
• Manufacturer: ATMEL Corporation

Figure 84. Power-up and Steady-state Conditions Monitored
138
DVCC
AT8xC5122/23
Vcc
Reset
Power-up
t
G
VPFDP
VPFDM
Such device when it is integrated in a microcontroller, forces the CPU in reset mode
when VCC reaches a voltage condition which is out of the specification.
The thresholds and their functions are:
•
•
A glitch filtering prevents the system to RESET when short duration glitches are carried
on DVCC power-supply.
VPFDP: the output voltage of the regulator has reached a minimum functional value
at the power-up. The circuit leaves the RESET mode.
VPFDM: the output voltage of the regulator has reached a low threshold functional
value for the microcontroller. An internal RESET is set.
Steady State Condition
t
4202B–SCR–07/03