I/O Device

Tews TIP675
Industry Pack	PowerPC	v. 4.0
Digital I/O

Tews' TIP675 is an IndustryPack®-compatible module providing 48 digital TTL tri-state I/O lines with pull-up resistors. Each of the 48 I/O lines is ESD protected and protected against overvoltage.

The line inputs are always enabled, which allows determining the state of the I/O line at any time. This can be used as read-back function for lines configured as outputs.

All 48 input lines can generate an interrupt. Each input interrupt can individually be enabled and cleared. Interrupts for negative and positive transitions could be used together with separate interrupt pending registers.

All interrupt inputs have an electronic debounce circuit to prevent short spikes on input lines to cause an IP interrupt.

Optionally, the I/O lines can be configured for simultaneous update internally and across several IPs by an external clock source. The polarity of the external clock source is programmable.

After power-on or reset, all I/O lines are configured as input and all pending interrupts are cleared.

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