User Manual

Introduction • 27
1.7 Overview of NuDAM-6058
1.7.1 What is NuDAM-6058 ?
NuDAM-6058 provides 28 digital I/O channels. It emulates industry
standard mode zero configuration of 8255 programmable peripheral
interface (PPI) chip. The PPI offers 3 ports A, B and C, the C port can also be
subdivided into 2 nibble-wide (4-bit) port – C upper and C lower. A 50 pin
SCSI connector equipped with ND-6058 which is corresponding to PPI chip
with 24 DIO points.
1.7.2 Features of NuDAM-6058
♦ Industry standard 8255 programmable peripheral interface mode 0
emulation
♦ 24 Programmable I/O channels
♦ 4 dedicated input channels
♦ Completely TTL compatible I/O lines
♦ Status read-back capability
♦ Direct bit set/reset capability
♦ Buffered circuits for higher driving capability
♦ Direct interface with OPTO-22 compatible I/O module
♦ Programmable host watchdog timer for host failure protection
♦ Internal watchdog timer for device failure protection
♦ On board resetable fuse to protect power supply form external
devices
♦ Easy programming by software
♦ Easy installation and wiring