Rainbow Electronics ATVaultIC200 - Manual (Page 16)

16
TPR0460AX–SMS–02/10
ATVaultIC200
Table 3-6. External components, Bill of Materials
3.6 Pin & Package Configuration
3.6.1 Pin Configuration
Table 3-7. Pin List Configuration
Others pins are not connected (do not connect to GND).
When communicating with SPI, all pins not used for SPI must not be connected (do not connect
to GND).
Configuration Reference Description Typ.Value Comment
I 2 C
R1, R2 Pull-Up Resistors
2.2 k Ω Recommended
C1 Power Supply Decoupling Capacitors 4.7 μF Recommended
C2 Power Supply Decoupling Capacitors 10 nF Recommended
SPI
C1 Power Supply Decoupling Capacitors 4.7 μF Recommended
C2 Power Supply Decoupling Capacitors
10 nF Recommended
ISO7816
R1 Pull-Up Resistor 20 k Ω usually on reader side
C1 Power Supply Decoupling Capacitors 4.7 μF usually on reader side
C2 Power Supply Decoupling Capacitors
10 nF usually on reader side
Designation
Pin #
Description
SOIC8 DFN8
RST
6 6 CPU reset
VCC 7 7 Power supply
MISO
8 8 SPI Master Input Slave Output
MOSI
1 1 SPI Master Output Slave Input
SCL / SS
3 3 I²C SCL / SPI Slave Select
IO0 / SDA / SPI_SEL 4 4 ISO7816 I/O0 / I²C SDA / SPI/I²C selection PIN
CLK / SCK
5 5 ISO7816 CLK / SPI Master clock
GND
2 2 Ground (reference voltage)