tda8026 NXP Semiconductors, tda8026 Datasheet - Page 11

• Manufacturer Part Number: tda8026
• Description: Multiple Smart Card Slot Interface Ic
• Manufacturer: NXP Semiconductors

NXP Semiconductors
TDA8026_1
Product data sheet
8.3.1 Block diagram
8.3.2 Description
8.3 Voltage supervisors
The voltage supervisor can be used to perform Power-On Resets (POR) and supply drop
detection during a card session. The supervisors control the internal regulated supply
voltage (V
ensure problem-free operation of the TDA8026. This block controls:
When an alarm occurs, the internal digital controller resets the TDA8026.
Fig 6.
Fig 7.
•
•
(internal signal)
V
V
the microcontroller interface supply voltage (V
PORADJ pin (V
DD(INTREGD)
DD
V
ALARMN
th
using the internal voltage regulator’s output (V
The voltage supervisor circuit
+ V
V
power-up
DD(INTREGD)
DD
V
hys
th
voltage supervisor
All information provided in this document is subject to legal disclaimers.
PORADJ
V
) and the microcontroller interface supply voltage (V
DD(INTF)
Rev. 1 — 9 March 2010
R1
R2
)
V
DD(INTREGD)
PORADJ
t
wake
V
DD(INTREGD)
V
activation
DD
ready for
device
V
REFERENCE
DD(INTREGD)
supply
VOLTAGE
drop
DD(INTF)
Multiple smart card slot interface IC
DD(INTREGD)
t
wake
) using the voltage on the
001aai961
activation
)
ready for
device
TDA8026
© NXP B.V. 2010. All rights reserved.
DD(INTF)
001aal088
) to
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