286
Tibbo Project System (TPS)
© Tibbo Technology Inc.
LEDs
Two yellow LEDs are connected to two control lines of the CPU (through buffering
gates). LEDs light up for the LOW state of control lines.
7.2.9.4
#01, M1S: Four-line RS232 Port
Function:
Simple RS232 port with only TX, RX, RTS, and CTS lines
Category:
Input/output module
Special needs:
Power requirements:
5V/20mA
Mates with:
See also:
Details
This is a standard "simple" RS232 port. This Tibbit is based on a generic RS232
transceiver (we use Zywyn ZT232F).
For "normal" RS232 applications, this Tibbit has to be connected to the TX and RX
lines of the CPU's UART (see
). Planning to use RTS/CTS flow control as well?
An interrupt line must be available, too (see
).
Combining this Tibbit with the "C" device
(DB9M connector) will create a serial
port with standard pin assignment on the DB9M: