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1982: NEC
  week 34, 1982: NEC D8085AC
  week 40, 1982: NEC D780C
  week 40, 1982: NEC D780C-1
  week 46, 1982: NEC D8085A
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» all chips made in 1982
 
NEC D8085AC
NEC D8085AC Top Side
NEC
JAPAN
8234HX
D8085AC
NEC D8085AC Back Side
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Core Frequency:3 MHz
Board Frequency:3 MHz
Data bus (ext.):8 Bit
Address bus:16 Bit
Transistors:6,000
Circuit Size:6.00
Voltage:5 V
Introduced:1978
Manufactured:week 34/1982
Made in:Japan
Package Type:Plastic
DIP-40
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NEC D780C
NEC D780C Top Side
NEC
JAPAN
8240PX
D780C
NEC D780C Back Side
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Core Frequency:2.5 MHz
Board Frequency:2.5 MHz
Data bus (ext.):8 Bit
Address bus:16 Bit
Manufactured:week 40/1982
Made in:Japan
Package Type:Plastic
DIP-40
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NEC D780C-1
NEC D780C-1 Top Side
NEC
JAPAN
8240X5
D780C -1
NEC D780C-1 Back Side
This is a Z80 compatible CPU and is built in my Sinclair ZX-81 computer from 1982.
 
Comment by Andrew (Lazerguy9000[at]aol.com):
This cpu is built into the daughter board of my former Omega Race arcade machine.
 
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Core Frequency:4 MHz
Board Frequency:4 MHz
Data bus (ext.):8 Bit
Address bus:16 Bit
Manufactured:week 40/1982
Made in:Japan
Package Type:Plastic
DIP-40
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NEC D8085A
NEC D8085A Top Side
NEC JAPAN
D8085A
8246H9
NEC D8085A Back Side
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Core Frequency:3 MHz
Board Frequency:3 MHz
Data bus (ext.):8 Bit
Address bus:16 Bit
Transistors:6,500
Circuit Size:3.00
Voltage:5 V
Introduced:1978
Manufactured:week 46/1982
Made in:Japan
Package Type:Ceramic
DIP-40
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