Kontron KTLX800-pITX User Manual download pdf (Page 31)

KTD-S0022-C Page 26 Digital I/O Interface

KTLX800/pITX User's Guide

The KTLX800/pITX features sixteen bidirectional I/O lines. All I/O lines are TTL tolerant. Inputs can be

13.1 Electrical Specifications

Digital Inputs

13 Digital I/O Interface

driven from either +3.3V or +5V devices. This feature allows a mixed +3.3V / +5V system environment.

Parameter Min. Typ. Max. Units

voltage Input LOW +0.8 V

Input HIGH voltage +1.7 +5.5 V

Input rate (direct access) 200 kHz

Digital Outputs

Parameter Min. Typ. Max. Units

Output LOW voltage +0.45 V

Output HIGH voltage +2.4 +3.3 V

Output LOW/HIGH current 16 mA

Switching rate (direct access) 200 kHz

13.2 Connector (Lower 8 Bits)

The digital I/O interface is available through the connector J1300 (10 pins).

Header Pin Signal Name Function

VCC

1 Power +3.3V

2 GPIO4 Bidirectional I/O 4

3 GPIO0 Bidirectional I/O 0

4 GPIO5 Bidirectional I/O 5

5 GPIO1 Bidirectional I/O 1

GPIO6 6 Bidirectional I/O 6

GPIO2 7 Bidirectional I/O 2

GPIO7 8 Bidirectional I/O 7

GPIO3 9 Bidirectional I/O 3

GND 10 Ground

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 65 66

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Kontron KTLX800-pITX User Manual Page 31