RR-CirKits
144-Bit
Parallel Digital I/O Board
The ACL-7122 emulates Mode
0 of the 8255 PPI. This mode provides simple input and output for each
of the three ports. No handshaking is required as data is directly written
to, or read from, a specified port by the software. Each of the six 8255
PPI chips controls 24 bits of digital I/O, and has three 8-bit ports (A,
B and C), which can be individually programmed as either inputs or outputs
using WinLok and it's new PIA8255
driver, or your own program.
Specifications:
-
PC/AT Bus
-
IRQ Level: IRQ3, ..., IRQ15
-
Compact Mid Sized PCB
-
SMT Component Design
-
144 TTL/DTL Compatible Digital
I/O Channels
-
Emulates Six Industry Standard
Mode 0 8255 PPI Chips
-
Buffered Circuits for High
Driving Capability (24 ma. logic low will direct drive LED's)
-
OPTO-22 Compatible.
-
Direct Interface with RR-CirKits
I/O Modules
-
Programmable Interrupt Handling
-
Supported by Popular RR Layout
Interface Software
-
Output Status Readback
Product Manual for ACL-7122
(PDF:
132 KB / 35 pages)
Last updated 8-16-99
