Re: D2164A-20

> ... Here's the pinout of a 4164:
... as seen from the top. (JIC)

----- Original Message ----- 
From: "Gerrit Heitsch" <gerrit@laosinh.s.bawue.de>
To: <cbm-hackers@musoftware.de>
Sent: Friday, December 16, 2016 11:59 AM
Subject: Re: D2164A-20


> On 12/16/2016 12:12 AM, Terry Raymond wrote:
>> Hi all,
>>
>> I found out my C128 does have D2164A-20 DRAM
>>
>> The previous owner installed it, terrible desoldering, terrible
>> soldering, so I'm having to clean it up,
>> Carefully. As far as desoldering older RAM chips!
>>
>> One wire came off so in moving it the other one did, is it pin4 that is
>> grounded?
> 
> No... Here's the pinout of a 4164:
> 
>         _____
>     NC [o V  ] GND
>    Din [     ] /CAS
>    /WE [     ] Dout
>   /RAS [     ] A6
>     A0 [     ] A3
>     A2 [     ] A4
>     A1 [     ] A5
>    Vcc [_____] A7
> 
> 
> The 'V' is the notch in the package and the 'o' is the mark for pin 1 
> that some of them have.
> 
> To help count: NC = pin1, GND = pin16, Vcc=pin8, A7=pin9
> 
>   Gerrit
> 
> 
> 
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