Parts required for a personal project

[jareyeschi]

Hi !!
I am searching for these parts
Microcontroller Intel 8032 or similar
Nec d7210c
Eprom 27c128
Eprom 27c512
Please contact me!
Thanks in advance

 

[ahsrabrifat]

ST electronics has this one. https://www.st.com/resource/en/datasheet/cd00004980.pdf

 

[danadak]

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Nec 7210 for sale | eBay

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[rjenkinsgb]

Hi !!
I am searching for these parts

Add your approximate location (Country and nearby major city) in your user settings, then people can figure out the nearest source to you.

 

[Jon Wilder]

Hi !!
I am searching for these parts
Microcontroller Intel 8032 or similar
Nec d7210c
Eprom 27c128
Eprom 27c512
Please contact me!
Thanks in advance

Microcontroller can be any one of the Atmel AT89S series. I highly recommend the Atmel AT89S8253. Hardware, pin, and code compatible with the 8032 with 64KB external code and data addressing modes just like the MCS-51 family. Also has dual data pointers, 12KB internal flash, and 1KB internal data EEPROM.

Microchip also makes the EEPROMs, but in 256Kb and 512Kb (AT27C512R-70PU and AT27C256R-70PU). The 27C256 can function as a 27C128 by tying its address pin A14 (pin 27) to ground.

 

[Ian Rogers]

I'm wondering about the bus controller!! most people just use a 74hc283 to decode addresses for external devices
And a separate data latch like a 74hc 573. much more easy to get hold of.

 

[Jon Wilder]

I'm wondering about the bus controller!! most people just use a 74hc283 to decode addresses for external devices
And a separate data latch like a 74hc 573. much more easy to get hold of.

74HC(T)573 is the most common bus latch I’ve seen used. I’ve also seen a 74HC138 used for external device addressing.

 

[shokjok]

I have only three versions of the 27C512 ( Intel, AMD, NEC), needing erasure and all are DIP-28 format. As suggested by rjenkinsgb, your location details are appreciated.

 

[Jon Wilder]

You could also go with AT28C256C. 27C EPROM is a bit antiquated. Microchip Direct has the AT28C256 in stock. If you need a full 64KB of EEPROM, you can use two of them and use the upper address pin on the 8051 to gate mask the PSEN signal, which will assign one EEPROM to the lower 32KB of the address space, while assigning the other EEPROM to the upper 32KB of address space.

Something like this -

 

[ZipZapOuch]

Add your approximate location (Country and nearby major city) in your user settings, then people can figure out the nearest source to you.

Profile says, Peru - I don't think closest major city will help much.

 

[BertPvandenBerg]

Hi !!
I am searching for these parts
Microcontroller Intel 8032 or similar
Nec d7210c
Eprom 27c128
Eprom 27c512
Please contact me!
Thanks in advance

Hi, I have some 27C128, 27C256 and 27C512 on hand. How many do you need/want?

Regards,

Bert van den Berg