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From: r12110@email.sps.mot.com (Jeff Loeliger)
Subject: Re: Info wanted: Motorola 68306
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References: <1994May4.024933.8470@selway.umt.edu> <BILLW.94May4003827@glare.cisco.com>
Date: Wed, 4 May 1994 20:27:03 GMT

In article <BILLW.94May4003827@glare.cisco.com> billw@glare.cisco.com (William ) writes:
>From: billw@glare.cisco.com (William )
>Subject: Re: Info wanted: Motorola 68306
>Date: 4 May 94 00:38:27

>All of the 683xx motarola processors are pretty cool.  What you get is
>either a 68000 or "CPU32" (somewhat between 68000 and 68020) processor core
>with some peripherals on-chip, along with a "system integration" unit that
>allows the chip to directly generate chip select signals, wait-states (eg it
>will generate an internal DTACK for you on a per chip-select basis after a
>settable number of cycles,) and so on.  You can build up quite a powerful
>little system with very little glue logic.

>The peripherals and on-board memory vary from chip to chip.  Here are
>a couple I know of offhand:

>68302   68000, 2kRam?, Fancy 3-port serial controller aimed at ISDN or
>                channelized T1, some timers, etc.  Can be operated in
>                "slave mode" as serial controllers (cisco ISDN routers
>                use a 60302 as the ISDN controller.)
>60330   CPU32, no RAM, some GP timers, not much else.
>68331   68330 plus onboard uart.
>68332   68331 plus "Time processing unit" coprocessor and some ram.  Sort
>        of aimed at automotive applications.  The TPU can do PWM stuff with
>        very little CPU intervention.

Almost, here is a little more detail on the 68330,1,2:
68330   CPU32
        SIM (one periodic interrupt timer, chip selects, etc.)
68331   CPU32
        SIM (like 68330 SIM)
        GPT (like 68HC11E9 timers with 2 PWMs)
        QSM (serial port and Queued SPI)
68332   CPU32
        SIM (like 68330 SIM)
        2K SRAM
        QSM (like 68331)
        TPU 

>68340   68331 plus DMA controllers, some ram.

>The chips aren't particularly hacker-friendly, being in fine-pitch surface
>mount packages, and usually require both external ROM and RAM...

Several companies make sockets for the 132 & 160 QFP parts. The sockets
have standard through hole pins. The 68332 can be used with just an
external ROM. If you want single-chip operation, look at the 68F333. It
has CPU32, SIM, 4K SRAM, 64K FLASH, QSM, TPU, and an ADC.

>BillW

Jeff
r12110@email.sps.mot.com

