Return-Path: Delivered-To: craig@sbc-85.com Received: from gator4254.hostgator.com by gator4254.hostgator.com with LMTP id +KnmJv7mr2aqHAIAcizydQ (envelope-from ) for ; Sun, 04 Aug 2024 15:39:26 -0500 Return-path: Envelope-to: 052922@SBC-85.COM Delivery-date: Sun, 04 Aug 2024 15:39:26 -0500 Received: from c-73-240-244-150.hsd1.wa.comcast.net ([73.240.244.150]:53277 helo=BasementDesk) by gator4254.hostgator.com with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96.2) (envelope-from ) id 1sai0k-000bKF-1L; Sun, 04 Aug 2024 15:39:26 -0500 From: To: =?utf-8?B?J+iOqyDnq5/miJAn?= , <052922@SBC-85.COM> References: In-Reply-To: Subject: RE: About bubble memories Date: Sun, 4 Aug 2024 13:39:26 -0700 Message-ID: <4e6f01dae6ae$662cc900$32865b00$@sbc-85.com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_4E70_01DAE673.B9CE1810" X-Mailer: Microsoft Outlook 16.0 Thread-Index: AQKhS62k0/Y2OBRqw5I0nFK6zsZwT7CKu5eg Content-Language: en-us This is a multipart message in MIME format. ------=_NextPart_000_4E70_01DAE673.B9CE1810 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Hello =20 For the 7110-0 -1 and -2 -4 -5, the dash number is the temperature = rating =20 Originally these were -0 0-50=C2=B0C -1 0-70=C2=B0C -2 10-50=C2=B0C =20 But very quickly they changed the temperature ranges so -1 -40=C2=B0C to 90=C2=B0C -4 -20=C2=B0C to 75=C2=B0C -5 -40=C2=B0C to 100=C2=B0C -6 -40=C2=B0C to 85=C2=B0C =20 For the A suffix, when intel came out with the second generation bubble = devices, they changed the manufacturing process and could now use a = leaded carrier. Around 1983 intel introduced the 4Mbit bubble chip = (7114) and the repackaged 7110. So while the 7110 was leadless and went = into a special socket, the 7110A was a leaded design that could be = soldered directly to the board. In early literature, intel referred to = the 1Mbit leaded as the 7110 thin and leaded but then settled on the = 7110A =20 Shortly before intel spun off the bubble memory into another company = (MemTech), they created the Z version. The Z means there is an = additional coil in the device that cancels the bias field and causes all = the bubble domains to merge into one, thereby erasing the device. I = presume this was done for some high-end or military application where = they wanted to force erase the entire device in an instant. This = required reassigning a couple of pins to drive the Z coil, so to use a = 7110AZ in place of a 7110A, the z-axis coil pins need to be lifted out = of the socket. =20 Regards craig =20 =20 =20 From: =E8=8E=AB =E7=AB=9F=E6=88=90 =20 Sent: Sunday, August 4, 2024 8:05 AM To: 052922@SBC-85.COM Subject: About bubble memories =20 =E2=80=82=E2=80=82=E2=80=82=E2=80=82=E2=80=82=E2=80=82Hello, Craig, I've = known your project recently, It's amazing! I wanted to know more about = it, so I started to learn some basic things about it, but the difference = between 7110 and 7110AZ confused me. Could you tell me the meaning of = "AZ" and those suffixes such as "-1", "-4" and "-5"?=20 ------=_NextPart_000_4E70_01DAE673.B9CE1810 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable

Hello

 

For the 7110-0 = =C2=A0=C2=A0=C2=A0-1=C2=A0 and -2 -4 -5, the dash number is the = temperature rating=C2=A0

Originally these = were

-0 = =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 = 0-50=C2=B0C

-1 = =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 = 0-70=C2=B0C

-2 = =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 = 10-50=C2=B0C

 

But very quickly they = changed the temperature ranges so

-1 = =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 -40=C2=B0C = to 90=C2=B0C

-4 = =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 -20=C2=B0C = to 75=C2=B0C

-5 = =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 -40=C2=B0C = to 100=C2=B0C

-6=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0 -40=C2=B0C to 85=C2=B0C

 

For the A suffix, = when intel came out with the second generation bubble devices, they = changed the manufacturing process and could now use a leaded = carrier.=C2=A0 Around 1983 intel introduced the 4Mbit bubble chip (7114) = and the repackaged 7110.=C2=A0 So while the 7110 was leadless and went = into a special socket, the 7110A was a leaded design that could be = soldered directly to the board.=C2=A0 In early literature, intel = referred to the 1Mbit leaded as the 7110 thin and leaded but then = settled on the 7110A

 

Shortly before intel = spun off the bubble memory into another company (MemTech), they created = the Z version.=C2=A0 The Z means there is an additional coil in the = device that cancels the bias field and causes all the bubble domains to = merge into one, thereby erasing the device.=C2=A0 I presume this was = done for some high-end or military application where they wanted to = force erase the entire device in an instant.=C2=A0 This required = reassigning a couple of pins to drive the Z coil, so to use a 7110AZ in = place of a 7110A, the z-axis coil pins need to be lifted out of the = socket.

 

Regards

craig

 

 

 

From:<= /b> = =E8=8E=AB = =E7=AB=9F=E6=88=90 = <JasonMo2009@hotmail.com>
Sent: Sunday, August 4, 2024 = 8:05 AM
To: 052922@SBC-85.COM
Subject: About bubble = memories

 

=E2=80=82=E2=80=82=E2=80=82=E2=80=82=E2=80=82=E2=80= =82Hello, Craig, I've known your project recently, It's amazing! I = wanted to know more about it, so I started to learn some basic things = about it, but the difference between 7110 and 7110AZ confused me. Could = you tell me the meaning of "AZ" and those suffixes such as = "-1", "-4" and = "-5"? 

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