TDA8025 Datasheet, PDF (5/38 Pages) NXP Semiconductors – IC card interface

NXP Semiconductors
7. Pinning information
7.1 Pinning
TDA8025
IC card interface
terminal 1
index area
CMDVCCN 1
TEST1 2
TEST2 3
V_DD(INTF) 4
CLKDIV2 5
CLKDIV1 6
VCC_SEL1 7
VCC_SEL2 8
TDA8025
24 TEST3
23 OFFN
22 RSTIN
21 V_DDI(REG)
20 GND
19 V_DD(INTREGD)
18 V_CC
17 RST
Transparent top view
Fig 2. Pin configuration (HVQFN32)
001aai958
7.2 Pin description
Table 3. Pin description
Symbol
Pin Type^[1] Description
CMDVCCN 1 I
microcontroller start activation sequence input; active LOW
TEST1
2I
test pin; connect to GND
TEST2
3I
test pin; connect to GND
V_DD(INTF)
CLKDIV2
4P
5I
interface supply voltage
sets the clock frequency; used together with pin CLKDIV1;
see Table 4 on page 12
CLKDIV1 6 I
sets the clock frequency; used together pin CLKDIV2; see Table 4 on
page 12
VCC_SEL1 7 I
optional 1.2 V selection control signal:
active HIGH: V_CC = 1.2 V
active LOW: disables 1.2 V selection
VCC_SEL2 8 I
3 V or 1.8 V selection control signal:
PRESN
9I
active LOW: V_CC = 3 V
active HIGH: V_CC = 1.8 V when pin VCC_SEL1 is active LOW
card presence contact input; active LOW^[2]
PRES
10 I
card presence contact input; active HIGH^[2]
I/O
11 I/O
card input/output data line (C7)^[3]
AUX2
12 I/O
card auxiliary 2 input/output data line (C8)^[3]
AUX1
13 I/O
card auxiliary 1 input/output data line (C4)^[3]
TDA8025_1
Product data sheet
Rev. 01 — 6 April 2009
© NXP B.V. 2009. All rights reserved.
5 of 38