I remember some folks who discussed very low cost designs that included 4-bit MCUs. At the time, the 4-bit chips were mostly made by companies in the orient with fully depreciated foundries.with a 4-bit MCU. I seem to recall if you had an existing design, they would even do the software port to the 4-bit chip, since they were all custom CPU designs by the vendor.
I haven't been able to find anyone selling these devices currently. I think it was always a business that isn't advertised much, since the customers all know the sellers. You have to be building a million of something to make it worthwhile designing
Anyone know who is still selling these lowest end MCUs?
On 6/11/2022 10:28 AM, Ricky wrote:with a 4-bit MCU. I seem to recall if you had an existing design, they would even do the software port to the 4-bit chip, since they were all custom CPU designs by the vendor.
I remember some folks who discussed very low cost designs that included 4-bit MCUs. At the time, the 4-bit chips were mostly made by companies in the orient with fully depreciated foundries.
I haven't been able to find anyone selling these devices currently. I think it was always a business that isn't advertised much, since the customers all know the sellers. You have to be building a million of something to make it worthwhile designing
Anyone know who is still selling these lowest end MCUs?
Is this an academic question or do you have a particular function and per-device budget in mind
On 11/06/2022 16:28, Ed Lee wrote:designing with a 4-bit MCU. I seem to recall if you had an existing design, they would even do the software port to the 4-bit chip, since they were all custom CPU designs by the vendor.
On Saturday, June 11, 2022 at 8:21:50 AM UTC-7, bitrex wrote:
On 6/11/2022 10:28 AM, Ricky wrote:
I remember some folks who discussed very low cost designs that included 4-bit MCUs. At the time, the 4-bit chips were mostly made by companies in the orient with fully depreciated foundries.
I haven't been able to find anyone selling these devices currently. I think it was always a business that isn't advertised much, since the customers all know the sellers. You have to be building a million of something to make it worthwhile
Is this an academic question or do you have a particular function and
Anyone know who is still selling these lowest end MCUs?
per-device budget in mind
If it costs less than a dime and run at 12V, i might be interested.They tend to be lower voltage 1.2-3v and very low power ~2uA. eg
https://www.emmicroelectronic.com/sites/default/files/products/datasheets/em6607_ds.pdf
Designed for high volume near throw away consumer kit.
On Saturday, June 11, 2022 at 8:21:50 AM UTC-7, bitrex wrote:with a 4-bit MCU. I seem to recall if you had an existing design, they would even do the software port to the 4-bit chip, since they were all custom CPU designs by the vendor.
On 6/11/2022 10:28 AM, Ricky wrote:
I remember some folks who discussed very low cost designs that included 4-bit MCUs. At the time, the 4-bit chips were mostly made by companies in the orient with fully depreciated foundries.
I haven't been able to find anyone selling these devices currently. I think it was always a business that isn't advertised much, since the customers all know the sellers. You have to be building a million of something to make it worthwhile designing
Is this an academic question or do you have a particular function and
Anyone know who is still selling these lowest end MCUs?
per-device budget in mind
If it costs less than a dime and run at 12V, i might be interested.
On Saturday, June 11, 2022 at 8:54:25 AM UTC-7, Martin Brown wrote:designing with a 4-bit MCU. I seem to recall if you had an existing design, they would even do the software port to the 4-bit chip, since they were all custom CPU designs by the vendor.
On 11/06/2022 16:28, Ed Lee wrote:
On Saturday, June 11, 2022 at 8:21:50 AM UTC-7, bitrex wrote:
On 6/11/2022 10:28 AM, Ricky wrote:
I remember some folks who discussed very low cost designs that included 4-bit MCUs. At the time, the 4-bit chips were mostly made by companies in the orient with fully depreciated foundries.
I haven't been able to find anyone selling these devices currently. I think it was always a business that isn't advertised much, since the customers all know the sellers. You have to be building a million of something to make it worthwhile
Is this an academic question or do you have a particular function and >> per-device budget in mind
Anyone know who is still selling these lowest end MCUs?
If it costs less than a dime and run at 12V, i might be interested.They tend to be lower voltage 1.2-3v and very low power ~2uA. eg
https://www.emmicroelectronic.com/sites/default/files/products/datasheets/em6607_ds.pdf
Designed for high volume near throw away consumer kit.I know. I need very old semi production machine that can handle 12V. Power is not a problem.
lørdag den 11. juni 2022 kl. 17.59.18 UTC+2 skrev Ed Lee:designing with a 4-bit MCU. I seem to recall if you had an existing design, they would even do the software port to the 4-bit chip, since they were all custom CPU designs by the vendor.
On Saturday, June 11, 2022 at 8:54:25 AM UTC-7, Martin Brown wrote:
On 11/06/2022 16:28, Ed Lee wrote:
On Saturday, June 11, 2022 at 8:21:50 AM UTC-7, bitrex wrote:
On 6/11/2022 10:28 AM, Ricky wrote:
I remember some folks who discussed very low cost designs that included 4-bit MCUs. At the time, the 4-bit chips were mostly made by companies in the orient with fully depreciated foundries.
I haven't been able to find anyone selling these devices currently. I think it was always a business that isn't advertised much, since the customers all know the sellers. You have to be building a million of something to make it worthwhile
Is this an academic question or do you have a particular function and >> per-device budget in mind
Anyone know who is still selling these lowest end MCUs?
If it costs less than a dime and run at 12V, i might be interested.They tend to be lower voltage 1.2-3v and very low power ~2uA. eg
https://www.emmicroelectronic.com/sites/default/files/products/datasheets/em6607_ds.pdf
just needs to be powered from 12V or does it need 12V io?Designed for high volume near throw away consumer kit.I know. I need very old semi production machine that can handle 12V. Power is not a problem.
On Saturday, June 11, 2022 at 9:03:41 AM UTC-7, lang...@fonz.dk wrote:designing with a 4-bit MCU. I seem to recall if you had an existing design, they would even do the software port to the 4-bit chip, since they were all custom CPU designs by the vendor.
lørdag den 11. juni 2022 kl. 17.59.18 UTC+2 skrev Ed Lee:
On Saturday, June 11, 2022 at 8:54:25 AM UTC-7, Martin Brown wrote:
On 11/06/2022 16:28, Ed Lee wrote:
On Saturday, June 11, 2022 at 8:21:50 AM UTC-7, bitrex wrote:
On 6/11/2022 10:28 AM, Ricky wrote:
I remember some folks who discussed very low cost designs that included 4-bit MCUs. At the time, the 4-bit chips were mostly made by companies in the orient with fully depreciated foundries.
I haven't been able to find anyone selling these devices currently. I think it was always a business that isn't advertised much, since the customers all know the sellers. You have to be building a million of something to make it worthwhile
just needs to be powered from 12V or does it need 12V io?I know. I need very old semi production machine that can handle 12V. Power is not a problem.They tend to be lower voltage 1.2-3v and very low power ~2uA. egIs this an academic question or do you have a particular function and >>>>>> per-device budget in mind
Anyone know who is still selling these lowest end MCUs?
If it costs less than a dime and run at 12V, i might be interested.
https://www.emmicroelectronic.com/sites/default/files/products/datasheets/em6607_ds.pdf
Designed for high volume near throw away consumer kit.
12V I/O
I remember some folks who discussed very low cost designs that included 4-bit MCUs. At the time, the 4-bit chips were mostly made by companies in the orient with fully depreciated foundries.with a 4-bit MCU. I seem to recall if you had an existing design, they would even do the software port to the 4-bit chip, since they were all custom CPU designs by the vendor.
I haven't been able to find anyone selling these devices currently. I think it was always a business that isn't advertised much, since the customers all know the sellers. You have to be building a million of something to make it worthwhile designing
Anyone know who is still selling these lowest end MCUs?
On Saturday, June 11, 2022 at 9:03:41 AM UTC-7, lang...@fonz.dk wrote:
I know. I need very old semi production machine that can handle 12V. Power is not a problem.just needs to be powered from 12V or does it need 12V io?
12V I/O
On 6/11/2022 9:08 AM, Ed Lee wrote:
On Saturday, June 11, 2022 at 9:03:41 AM UTC-7, lang...@fonz.dk wrote:
I know. I need very old semi production machine that can handle 12V. Power is not a problem.just needs to be powered from 12V or does it need 12V io?
12V I/OYou should look carefully at the actual field requirements.
If, for example, you need to add protection networks on the I/Os,
you may find you can do that and address the lower i/f levels
for no additional cost.
On Saturday, June 11, 2022 at 10:44:09 AM UTC-7, Don Y wrote:
On 6/11/2022 9:08 AM, Ed Lee wrote:
On Saturday, June 11, 2022 at 9:03:41 AM UTC-7, lang...@fonz.dk wrote:
I know. I need very old semi production machine that can handle 12V. Power is not a problem.just needs to be powered from 12V or does it need 12V io?
Modern MCU designs often require level-shiftings and/or regulators to deal with 12V. I wish there is a simple MCU just run straight with high voltage. Can they build very big (large geometry) chips with modern semi processes?12V I/OYou should look carefully at the actual field requirements.
If, for example, you need to add protection networks on the I/Os,
you may find you can do that and address the lower i/f levels
for no additional cost.
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