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TDA8025HN Datasheet(PDF) 6 Page - NXP Semiconductors |
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TDA8025HN Datasheet(HTML) 6 Page - NXP Semiconductors |
6 / 38 page TDA8025_1 © NXP B.V. 2009. All rights reserved. Product data sheet Rev. 01 — 6 April 2009 6 of 38 NXP Semiconductors TDA8025 IC card interface [1] I = input, O = output, I/O = input/output, G = ground and P = power supply. [2] If pin PRESN or pin PRES is true, the card is considered to be present. During card insertion, debouncing can occur on these signals. To counter this, the TDA8025 has a built-in debouncing timer (typically 4.5 ms). [3] Using the internal pull-up resistor connected to pin VCC. [4] Using the internal pull-up resistor connected to pin VDD(INTF). CGND 14 G card signal ground CLK 15 O card clock (C3) CONFIG 16 I 3.3 V or 5 V core regulator supply voltage selection; see Figure 3 on page 7 RST 17 O card reset (C2) VCC 18 P card supply (C1); decouple to pin CGND using one 470 nF and one 220 nF capacitor with an Equivalent Series Resistance (ESR) < 100 m Ω VDD(INTREGD) 19 P internally regulated supply voltage GND 20 G ground VDDI(REG) 21 P regulator input supply voltage RSTIN 22 I microcontroller card reset input; active HIGH OFFN 23 O NMOS interrupt to microcontroller[4]; active LOW; see Section 8.10 on page 19 TEST3 24 O test pin; do not connect to the application PORADJ 25 I power-on reset threshold adjustment input[4] ENCLKIN 26 I enable external clock on pin XTAL1; active HIGH XTAL2 27 O crystal connection pin; open when used with an external clock source XTAL1 28 I crystal connection pin; supply reference VDD(INTREGD) external clock input; supply reference VDD(INTF) I/OUC 29 I/O microcontroller input/output data line[4] AUX1UC 30 I/O microcontroller auxiliary 1 input/output data line[4] AUX2UC 31 I/O microcontroller auxiliary 2 input/output data line[4] TEST4 32 I test pin; connect to GND Table 3. Pin description …continued Symbol Pin Type[1] Description |
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