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PDF TDA8005 Data sheet ( Hoja de datos )
| Número de pieza | TDA8005 | |
| Descripción | Low-power smart card coupler | |
| Fabricantes | NXP Semiconductors | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TDA8005 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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INTEGRATED CIRCUITS
DATA SHEET
TDA8005
Low-power smart card coupler
Product specification
Supersedes data of 1995 Apr 13
File under Integrated Circuits, IC17
1996 Sep 25
1 page  
Philips Semiconductors
Low-power smart card coupler
Product specification
TDA8005
PINNING
SYMBOL
n.c.
AGND
S3
K5
P03
P02
P01
n.c.
P00
VDDD
n.c.
TEST1
P11
P12
P13
P14
n.c.
P15
P16
TEST2
P17
RESET
n.c.
n.c.
n.c.
n.c.
n.c.
RxD
TxD
INT1
T0
AUX1
AUX2
P37
XTAL2
XTAL1
DGND
n.c.
PIN
LQFP64 QFP44
SOT314-2 SOT307-2
DESCRIPTION
1 − not connected
2 1 analog ground
3 2 contact 3 for the step-up converter
4 − output port from port extension
5 3 general purpose I/O port (connected to P03)
6 4 general purpose I/O port (connected to P02)
7 5 general purpose I/O port (connected to P01)
8 − not connected
9 6 general purpose I/O port (connected to P00)
10 7 digital supply voltage
11 − not connected
12 8 test pin 1 (connected to P10; must be left open-circuit in the application)
13 9 general purpose I/O port or interrupt (connected to P11)
14 10 general purpose I/O port or interrupt (connected to P12)
15 11 general purpose I/O port or interrupt (connected to P13)
16 12 general purpose I/O port or interrupt (connected to P14)
17 − not connected
18 13 general purpose I/O port or interrupt (connected to P15)
19 14 general purpose I/O port or interrupt (connected to P16)
20 15 test pin 2 (connected to PSEN; must be left open-circuit in the application)
21 16 general purpose I/O port or interrupt (connected to P17)
22 17 input for resetting the microcontroller (active HIGH)
23 − not connected
24 − not connected
25 − not connected
26 − not connected
27 − not connected
28 18 serial interface receive line
29 19 serial interface transmit line
30 20 general purpose I/O port or interrupt (connected to P33)
31 21 general purpose I/O port (connected to P34)
32 22 push-pull auxiliary output (±5 mA; connected to timer T1 e.g. P35)
33 23 push-pull auxiliary output (±5 mA; connected to timer P36)
34 24 general purpose I/O port (connected to P37)
35 25 crystal connection
36 26 crystal connection or external clock input
37 27 digital ground
38 − not connected
1996 Sep 25
5
5 Page 
Philips Semiconductors
Low-power smart card coupler
Product specification
TDA8005
Clock circuitry
The clock to the microcontroller and the clock to the card
are derived from the main clock signal (XTAL from
2 to 16 MHz, or an external clock signal).
Microcontroller clock (fclk) after reset, and during power
reduction modes, the microcontroller is clocked with fINT/8,
which is always present because it is derived from the
internal oscillator and gives the lowest power
consumption. When required, (for card session, serial
communication or anything else) the microcontroller may
choose to clock itself with 1⁄2fxtal, 1⁄4fxtal or 1⁄2fINT.
All frequency changes are synchronous, thereby ensuring
no hang-up due to short spikes etc.
Cards clock: the microcontroller may select to send the
card 1⁄2fxtal, 1⁄4fxtal, 1⁄8fxtal or 1⁄2fINT (≈1.25 MHz), or to stop
the clock HIGH or LOW. All transition are synchronous,
ensuring correct pulse length during start or change in
accordance with ISO 7816.
After power on, CLK is set at STOP LOW, and fclk is set at
1⁄8fINT.
Power-down and sleep modes
The TDA8005 offers a large flexibility for defining power
reduction modes by software. Some configurations are
described below.
In the power-down mode, the microcontroller is in
power-down and the supply and the internal oscillator are
active. The card is not active; this is the smallest power
consumption mode. Any change on P1 ports or on PRES
will wake-up the circuit (for example, a key pressed on the
keyboard, the card inserted or taken off).
In the sleep mode, the card is powered, but configured in
the Idle or sleep mode. The step-up converter will only be
active when it is necessary to reactivate VUP. When the
microcontroller is in Power-down mode any change on P1
ports or on PRES will wake up the circuit.
In both power reduction modes the sequencer is active,
allowing automatic emergency deactivation in the event of
card take-off, hardware problems, or supply drop-out.
The TDA8005 is set into Power-down or sleep mode by
software. There are several ways to return to normal
mode, Introduction or extraction of the card, detection of a
change on P1 (which can be a key pressed) or a command
from the system microcontroller. For example, if the
system monitors the clock on XTAL1, it may stop this clock
after setting the device into power-down mode and then
wake it up when sending the clock again. In this situation,
the internal clock should have been chosen before the fclk.
Peripheral interface
This block allows synchronous serial communication with
the three peripherals (ISO UART, CLOCK CIRCUITRY
and OUTPUT PORTS EXTENSION).
handbook, full pagewidth
RESET
P24 P06 P07 P27
DATA STROBE ENABLE REG0
P26
REG1
P25
R/W
P32
INT
PERIPHERAL CONTROL
clock configuration
CC0 CC1 CC2 CC3 CC4 CC5 CC6 CC7
Uart configuration
UC0 UC1 UC2 UC3 UC4 UC5 UC6 UC7
Uart transmit
UT0 UT1 UT2 UT3 UT4 UT5 UT6 UT7
ports extension
PE0 PE1 PE2 PE3 PE4 PE5 PE6 PE7
Uart receive
UR0 UR1 UR2 UR3 UR4 UR5 UR6 UR7
Uart status register
US0 US1 US2 US3 US4 US5 US6 US7
MBH635
1996 Sep 25
Fig.5 Peripheral interface diagram.
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet TDA8005.PDF ] | |
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