Rainbow Electronics T89C5121 - Manual (Page 5)

5
A/T8xC5121
4164G–SCR–07/06
Signals All the T8xC5121 signals are detailed in Table 1.
The port structure is described in Section “Port Structure Description”.
Table 1. Ports Description
Port
Signal
Name Alternate
Internal
Power
Supply ESD Type Description
P1.0 CIO CV
CC
4 kV I/O
Smart card interface function
Card I/O.
I/O
Input/Output function
P1.0 is a bi-directional I/O port .
I
Reset configuration
Input .
P1.1 CC8 CV
CC
4 kV O
Smart card interface function
Card contact 8
O
Output function
P1.1 is a Push-pull port.
I
Reset configuration
Input
P1.2 CPRES V
CC
4 kV I
Smart card interface function
Card presence
I/O
Input/Output function
P1.2 is a bi-directional I/O port with internal pull-ups- ( External Pull-up
configuration can be selected).
I
Reset configuration
Input (high level due to internal pull-up)
P1.3 CC4 CV
CC
4 kV O
Smart card interface function
Card contact 4
O
Output function
P1.3 is a Push-pull port.
I
Reset configuration
Input (high level due to internal pull-up)
P1.4 CCLK CV
CC
4 kV O
Smart card interface function
Card clock
I/O
Input/Output function
P1.4 is a a Push-pull port.
O
Reset configuration
Output at low level
P1.5 CRST CV
CC
4 kV O
Smart card interface function
Card reset
I/O
Input/Output function
P1.5 is a a Push-pull port.
O
Reset configuration
Output at low level