TDA8026ET/C2,518 NXP Semiconductors, TDA8026ET/C2,518 Datasheet - Page 9

• Manufacturer Part Number: TDA8026ET/C2,518
• Description: IC SMART CARD SLOT 64TFBGA
• Manufacturer: NXP Semiconductors

Specifications of TDA8026ET/C2,518

• Controller Type: Smart Card Interface
• Interface: I²C
• Voltage - Supply: 2.7 V ~ 5.5 V
• Current - Supply: 210mA
• Operating Temperature: -25°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 64-TFBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

NXP Semiconductors
TDA8026_1
Product data sheet
8.2.4.1 Entering shutdown mode
8.2.1 Standby mode
8.2.2 Active mode
8.2.3 Clock-stop mode
8.2.4 Shutdown mode
In Standby mode, both the supply voltages V
specification limits as described in
converter is not running and the card slots are not activated.
In active mode, both the V
within the specification limits as described in
slot is activated. All card slots can be activated at once and communication performed
with up to two cards slots.
The DC-to-DC converter has been developed to handle a 116 mA (typical) DC load. This
allows two active card slots to communicate with a load of 55 mA while the three
remaining card slots are in clock-stop mode (see
mode) with a 2 mA load.
The DC-to-DC converter overload protection is triggered when a higher current load than
specified in
for further information).
Clock-stop mode is a low-power mode which is triggered when a card is activated without
any communication. In this mode, a supply voltage with a low frequency clock is applied to
cards that do not support the clock-stop feature.
Shutdown mode is the very low power consumption mode, typically 25 A. The TDA8026
enters this mode when the SDWNN pin is driven LOW. Only presence monitoring on card
slot 1 remains enabled. When card insertion or removal is detected on card slot 1, an
interrupt signal (IRQN) is sent to the microcontroller.
In shutdown mode, it is assumed that the V
and the SDWNN pin is active LOW.
Shutdown mode is activated when the SDWNN pin is driven LOW. On entering this mode:
This causes the following:
1. All card slots are automatically deactivated
2. The power consumption is reduced on completion of the deactivation sequence.
•
•
•
•
•
Digital module moves in to reset mode. However, card presence monitoring on slot 1
continues to operate normally
All card slots are disabled and all card pins are forced to 0 V. Again, card presence
monitoring on slot 1 continues to operate normally
Thermal protection is disabled
The DC-to-DC converter is bypassed
All interface signal pull-up resistors are disconnected from their supply rail (except the
pull-up resistor on the SDWNN pin)
Table 40 on page 39
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 9 March 2010
DD
and V
is supplied to the DC-to-DC converter (see
Table 40 on page
DD(INTF)
supply voltages are applied to the device
DD(INTF)
Table 40 on page
DD
and V
Section 8.2.3
Multiple smart card slot interface IC
and V
39. In addition, the DC-to-DC
DD(INTF)
DD
supply voltages are stable
are applied within the
39. A minimum of one card
for information about this
TDA8026
© NXP B.V. 2010. All rights reserved.
Section 8.11
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