Article View: sci.electronics
Article #4333Re: Need pointer to CMOS Uart
From: Gordon Vickers
Date: Thu, 15 Mar 1990 17:02
Date: Thu, 15 Mar 1990 17:02
45 lines
2590 bytes
2590 bytes
In article <53558@microsoft.UUCP> gordonl@microsoft.UUCP (Gordon LETWIN) writes:
>I need a quick and easy PC interface to about 8 RS232 lines. Performance
>requirements are low so I was thinking of just wrapping a kuldge card
>with several UARTs. The last one I worked with was the 8250, 10 years ago
>or so. I find it very convenient, but I don't want to give up the real
>estate and power drain to put 8 of those on a card.
>
>If someone knows of a easy to use UART/USART, ideally CMOS and ideally
>multi-channel per package, I'd appreciate it if you could email me the
>part #; I'm sure that in the last 8 years there've been some good chips
>
> thanks
> gordon letwin
Signetics, a division of Philips Components makes the SCC2698 :
o CMOS
o Octal UART
o quadruple buffered receiver data register
o Programmable data format :
- 5 to 8 data bits plus parity
- Odd, even, no parity, or force parity
- 1, 1.5 or 2 stop bits
o Baud rate for receiver and transmitter selectable from :
- 18 fixed rates: 50 to 38.4K
- four user-defined rates derived from the programmable
counter/timer associated with each of the four blocks
- External 1X or 16X clock
o Parity, framing, and overrun error dectection
o False start bit detection
o Line break detection and generation
o Programmable channel mode :
- Normal (full duplex), automatic echo, local loopback,
remote loopback
o Four multi-function programmable 16-bit counter/timers
o Four interrupt outputs with eight maskable interrupting conditions
for each output
o On-chip crystal oscillator
o TTL compatible
o Single +5V power supplly with low power mode
Gordon Vickers 408/991-5370, at Signetics (Sunnyvale, California, USA )
{mips|pyramid|philabs}!prls!facv01!gordon ** All disclaimers apply **
Earth is a complex array of symbiotic relationships: Every extinction, whether
animal, mineral, vegetable, or cultural hastens our own demise.
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!dino!ceres!zaphod.mps.ohio-state.edu!mips!prls!gordon From: gordon@prls.UUCP (Gordon Vickers) Newsgroups: sci.electronics Subject: Re: Need pointer to CMOS Uart Message-ID: <34002@prls.UUCP> Date: 15 Mar 90 17:02:38 GMT References: <53558@microsoft.UUCP> Reply-To: gordon@prls.UUCP (Gordon Vickers) Distribution: na Organization: Philips Research Labs, Sunnyvale, California Lines: 45