T83C5121 datasheet(4/110 Pages) ATMEL

4 / 110 page

T8xC5121

4164E–SCR–02/04

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

CVCC

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 .

Reset configuration

Input .

P1.1

CC8

CVCC

4 kV

Smart card interface function

Card contact 8

Output function

P1.1 is a Push-pull port.

Reset configuration

Input

P1.2

CPRES

VCC

4 kV

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).

Reset configuration

Input (high level due to internal pull-up)

P1.3

CC4

CVCC

4 kV

Smart card interface function

Card contact 4

Output function

P1.3 is a Push-pull port.

Reset configuration

Input (high level due to internal pull-up)

P1.4

CCLK

CVCC

4 kV

Smart card interface function

Card clock

I/O

Input/Output function

P1.4 is a a Push-pull port.

Reset configuration

Output at low level

P1.5

CRST

CVCC

4 kV

Smart card interface function

Card reset

I/O

Input/Output function

P1.5 is a a Push-pull port.

Reset configuration

Output at low level

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