SRAM 256KBIT (32 kilobytes) - how often have you come across DIP packages (shi
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Hello fan
I have one purchased (foolishly) “wide”, 70 ns... and a bunch of “narrow” ones,
pulled out from old PC mothers - all at 15 ns.
Hello, All
I only came across one (from an ancient cash register). In stores and
on antique motherboards I see only PDIP (narrow bodies, like pop ones
small circuit diagrams). I see even more planar on any scrap (we're talking about SRAM
256KBIT).
In general, the question is what is easier for you to find, and is it a problem when
available DIP (SRAM 256KBIT) find PDIP (because I want to get rid of wiring for DIP
(in favor of PDIP), it comes out very bold).
In principle, there is a similar question regarding SRAM 1024KBIT (128 kilobytes). That's how I am
Finally, I haven’t seen it in any DIP (I’ve only seen the terribly wide planar ala DIP).
ZY I'm mostly interested in statistics, rather than someone's desire to wave
soldering iron for the purpose of using these small circuits ;) So don’t be shy
speak out :)
Hello hero
her> But 1Mibt you won’t find it easier to get 62306 (512kbyte)
And in which buildings???
Hello hero
Looks like I'm looking for something strange in the eroglyphs 62306%)
Do you happen to have this beast on hand? Can you draw all the eroglyphs in their entirety?
Hello fan
fan> And in which buildings???
In principle, I have DIPs lying around at home (they look more impressive :) )
but I also saw PDIP in the price lists
Hello fan
fan> Something strange is being found in the eroglyphs 62306%
found BS62LV4006PC-70 - which are pinout compatible with Motorola 62306
(or maybe 62308 :) I don’t remember)
Very often you can find CY62148 which is the same
Hello fan
For example, 62256 can be found in wide and narrow cases; the problem is to find
70ns everything is filled with 15ns :)
But 1Mibt you definitely won’t find it easier to get 62306 (512kbyte)
Hello hero
MS62256H-20NC
Just yesterday I came across 4 pieces in the 386-DX40.
Hello fan
I have one purchased (foolishly) “wide”, 70 ns... and a bunch of “narrow” ones,
pulled out from old PC mothers - all at 15 ns.
Hello, Black_Cat
Yes, there are fast ones in a wide body and slow ones in a narrow body, you don’t have to look at
width of the case and on the markings.
Hello hero
MS62256HL:
1.1 W (Max) Operating
1 mW (Max) Power down
Ultra low data retention supply current at Vcc=2V
CMOS
I really didn't see a mention of 'HL' anywhere else in the datasheet.
designation
Hello, Black_Cat
Yes, consumption does not depend on the size of the volume of plastic in the case, it’s simple
different packaging for crystal
Hello, Ivan
Look how much the narrow ones (which are fast) eat. I have vague memories that
wide are CMOS, and narrow are nMOS. If so, then some can be used with autonomous
meals, and others only with stationary. Conclusion - leave both options
wiring.
Hello hero
her> consumption does not depend on the size of the plastic volume
I didn’t talk about plastic, there are suspicions that the narrow fast one picked out from the RS
statics are nMOP and eat a lot.
Hello, Ivan
It is clear that the more ancient ones are in DIP. I've had about a dozen lying around since the early 90s.
Korean 64с256 in wide cases. But putting them on boards in the 21st century? (and
spread out accordingly - somehow the hand does not rise)
Hello andrews
and> But putting them on boards in the 21st century?
The board is made using retro technology, that’s why the details are like this :).
her> you need to look not at the width of the case, but at the markings.
That's not the point. People have heaps of quick static from old mothers, this static and
will most likely be "recycled".
Hello, CHRV
Not quite on topic:
bought (in this store http://www.itis.spb.ru/CATSHORT.HTM) 4 pieces
AS7C4096-15 SRAM 512 KB in SOJ36 (in principle, you can solder it with wires) for
upgrading your Scorpio.
And on the topic, I saw a lot of winbond and ISSI in narrow dip cases on 486 boards (on
they made a cache), on the stumps there were microcircuits in a tqfp package as a cache
(planars with pins on 4 sides), P2 and slot P3 also had these, only
inside the cartridge.
Hello fan
fan> It turns out that it’s easier to put a whole 256KBIT battery in PDIP and rip it out
fan> available from everywhere and sold in any bakery
You can buy a Samsung in a BGA case and solder it using a home-grown method.
I saw this method on some site:
take a board on which a round contact is made for each BGA leg
platform with a through hole (with metallization, 2-sided board, Soviet type
dummies), then a microcircuit in a BGA package is placed on top, a board is placed below
heated with a hair dryer (air flow through the holes melts well
balls), after which everything is soldered from below with ordinary wires.
Hello hero
her> found BS62LV4006PC-70 - which are pinout compatible with
her> Motorola 62306 (or maybe 62308 I don’t remember)
her>
her> Very often you can find CY62148 which is the same
Hmm, these little gadgets are more likely to be unavailable than vice versa %(
Can you remember any other names of statics in the range 128k-512k?
((I didn’t find anything on eroglephs 62306 / 62308))
It turns out that it’s easier to put a whole 256KBIT battery in PDIP: D and rip it out
from where and in any bakery it is sold :D
Hello fan
fan> Hmm, these little gadgets are more likely to be unavailable than vice versa %(
fan> Can you remember any other names of statics in the range 128k-512k?
fan> ((I didn’t find anything for eroglephs 62306 / 62308))
Yes, a lot, and everything happens in DIP (see 486 mothers):
W241024 (Winbond)
K6R1008,K6R4008,K6X1008,K6X4008,K6T4008 (Samsung)
IS61C1024 (ISSI)
CY7C1009 (Cypress)
UT621024 (Utron)
Hello, CHRV
CHR> Yes, a lot, and everything happens in DIP (see 486 mothers):
CHR> W241024 (Winbond)
CHR> K6R1008,K6R4008,K6X1008,K6X4008,K6T4008 (Samsung)
CHR> IS61C1024 (ISSI)
CHR> CY7C1009 (Cypress)
CHR> UT621024 (Utron)
10X!!!
And how often were there mikruhi in wide deep cases (from the range in
128k-512k) ???
dea> you can buy a Samsung in a BGA case and solder it using a home-grown method.
Alas, the board is one-sided, do it yourself.
Hello fan
fan> In general, the question is what is easier for you to find, and whether this is a problem
fan> if you have DIP (SRAM 256KBIT) find PDIP (because I want to get rid of
fan> wiring for DIP (in favor of PDIP), it comes out very bold).
fan> Alas, the board is one-sided, do it yourself.
If you're already inventing something? :v2_wink2:
Hello, Ivan
Innovative technologies of the partisan brigade :D -
http://sblive.narod.ru/ZX-Spectrum/ReSpecT/ReSpecT.htm
Something like a news thread here -
http://zx.pk.ru/showthread.php?t=3957&goto=lastpost