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NEC 8086/88
  NEC D8088D-2
  NEC V20 D70108D-8
  NEC V25 D70325L-10 (Japan)
  NEC V30 D70116D-5
  NEC V30 D70116C-8
  NEC V50 D70216L-10 (USA)
  NEC V50 D70216L-10 (USA), New Logo
  NEC V50 D70216L-10 (Japan)
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NEC D8088D-2
NEC D8088D-2 Top Side
NEC
JAPAN 8643LX
D8088D -2 (C)NEC 1981
NEC D8088D-2 Back Side
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Core Frequency:8 MHz
Board Frequency:8 MHz
Data bus (ext.):8 Bit
Address bus:20 Bit
Transistors:29,000
Circuit Size:3.00
Voltage:5 V
Introduced:06/1979
Manufactured:week 43/1986
Package Type:Ceramic
DIP-40
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The NEC V20 Processor
The NEC V20 is a 16-bit CMOS microprocessor with 8-bit external data bus, object-code and pin-compatible with the Intel 8088. The V20 runs at the same speed as the 8088, but it's slightly faster due to internal improvements - dual internal 16-bit data bus, faster effective address calculation, better loop counter/shift register implementation, and some others. The V20 includes Intel 8080 emulation mode, in which it can execute all of the 8080 instructions. Native NEC V20 instruction set includes all 8086/8088 instructions, new instructions from the 80186/80188 microprocessor, and instructions unique to V20 - bit processing, packed BCD instructions and special instructions for switching the processor to 8080 emulation mode and back.
 
The V20 is almost the same as the NEC V30 with the exception that the V30 has a 16-bit data bus.
NEC V20 D70108D-8
NEC V20 D70108D-8 Top Side
NEC Japan
8622H9 V20
D70108D-8 (c)'84 NEC
NEC V20 D70108D-8 Back Side
Comment by Martin Krause (mkrause[at]fastmail.fm):
I have/had an NEC V20. It was great; the extra speed was like something for nothing. It also runs much cooler than the Intel 8088 as it used CMOS instead of NMOS. I once built an all CMOS motherbourd with it and a bunch of other descreat logic like 74HCxxx instead of 74Sxxx. I was trying to build a PC that produced very little heat and therefore required little cooling.
 
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Core Frequency:8 MHz
Board Frequency:8 MHz
Data bus (ext.):8 Bit
Address bus:20 Bit
Transistors:63,000
Introduced:1976
Manufactured:week 22/1986
Made in:Japan
Package Type:Ceramic
DIP-40
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NEC V25 D70325L-10 (Japan)
NEC V25 D70325L-10 (Japan) Top Side
NEC JAPAN
D70325L-10
V25 (c)NEC '86
0046RK001
NEC V25 D70325L-10 (Japan) Back Side
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Core Frequency:10 MHz
Board Frequency:10 MHz
Data bus (ext.):16 Bit
Address bus:24 Bit
Introduced:1986
Manufactured:week 46/2000
Package Type:Plastic
PLCC-84
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The NEC V30 Processor
The NEC V30 is a 16-bit CMOS microprocessor, object-code and pin-compatible with the Intel 8088. The V30 runs at the same speed as the 8088, but it's 10% - 30% faster (depending on application) due to internal improvements - dual internal 16-bit data bus, faster effective address calculation, better loop counter/shift register implementation, and some others. The V30 includes Intel 8080 emulation mode, in which it can execute all of the 8080 instructions. Native NEC V30 instruction set includes all 8086/8088 instructions, new instructions from the 80186/80188 microprocessor, and instructions unique to V30 - bit processing, packed BCD instructions and special instructions for switching the processor to 8080 emulation mode and back.
 
The V30 is almost the same as the NEC V20 with the exception that the V20 has an 8-bit data bus.
NEC V30 D70116D-5
NEC V30 D70116D-5 Top Side
NEC Japan
8513K9
V30 D70116D-5
NEC V30 D70116D-5 Back Side
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Core Frequency:5 MHz
Board Frequency:5 MHz
Data bus (ext.):8 Bit
Address bus:20 Bit
Transistors:63,000
Introduced:1979
Manufactured:week 13/1985
Made in:Japan
Package Type:Ceramic
DIP-40
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NEC V30 D70116C-8
NEC V30 D70116C-8 Top Side
NEC Japan
8603MX V30
D70116C-8 (C)'84 NEC
NEC V30 D70116C-8 Back Side
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Core Frequency:8 MHz
Board Frequency:8 MHz
Data bus (ext.):8 Bit
Address bus:20 Bit
Transistors:63,000
Introduced:1979
Manufactured:week 03/1986
Made in:Japan
Package Type:Plastic
DIP-40
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The NEC V50 Processor
The NEC V50 is a 16-bit embedded microprocessor compatible with NEC V30. The V50 has all of the features of the V30 (8080 emulation, new instructions, low-power consumption, standby mode, and others), and at the same time integrates many peripherals on the chip - clock generator, DRAM refresh control, timers/counters, bus interface and bus arbitration units, asynchronous serial I/O channel, wait-state generator and 8-input interrupt control unit.
 
It is typically used as a processor for embedded devices. Network switches from various manufacturers use the V50.
NEC V50 D70216L-10 (USA)
NEC V50 D70216L-10 (USA) Top Side
NEC USA
D70216L-10
V50 (c)NEC '84
9219HVC88
NEC V50 D70216L-10 (USA) Back Side
Donated by SOFTWERK. Thanks a lot!  
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Core Frequency:10 MHz
Board Frequency:10 MHz
Data bus (ext.):16 Bit
Address bus:20 Bit
Introduced:1985
Manufactured:week 19/1992
Package Type:Plastic
PLCC-68
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NEC V50 D70216L-10 (USA), New Logo
NEC V50 D70216L-10 (USA), New Logo Top Side
NEC USA
D70216L-10
V50 (c)NEC '84
9316HVB19
NEC V50 D70216L-10 (USA), New Logo Back Side
Donated by SOFTWERK. Thanks a lot!  
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Core Frequency:10 MHz
Board Frequency:10 MHz
Data bus (ext.):16 Bit
Address bus:20 Bit
Introduced:1985
Manufactured:week 16/1993
Package Type:Plastic
PLCC-68
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NEC V50 D70216L-10 (Japan)
NEC V50 D70216L-10 (Japan) Top Side
NEC JAPAN
D70216L-10
V50 (c)NEC '84
9535HK003
NEC V50 D70216L-10 (Japan) Back Side
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Core Frequency:10 MHz
Board Frequency:10 MHz
Data bus (ext.):16 Bit
Address bus:20 Bit
Introduced:1985
Manufactured:week 35/1995
Package Type:Plastic
PLCC-68
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