30 Sep
2008
30 Sep
'08
9:49 p.m.
Date: Tue, 30 Sep 2008 22:58:00 -0400
From: "Roy J. Tellason" <rtellason at verizon.net>
Subject: Re: LED displays (TIL305, TIL308, etc.)
On Tuesday 30 September 2008 16:43, Chuck Guzis wrote:
Didn't Motorola package one if its early
mask-programmed RTL ROMs as
a standard BCD-to-seven segment part?
I remember that, but if you wanted more bits either way than the number of
bits the chip was set up for their app info had you cascading some absurd
number of them.
-----------------------------
And then there's Motorola's MC14489, directly drives 5 7-seg LED displays
(and/or discrete LEDs &c), cascadable, hexadecimal decoding (among others) etc.
Serial input, only 1 resistor required to limit current.
mike