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UMC 486 Processors

 

U5S

Vcc
TCASE
Level 1 Cache
Package
5V
0°C - +85°C ???
8—Kbyte
168—pin ceramic PGA
Core Speed 25MHz U5S-SUPER25
Core Speed 25—33MHz U5S-SUPER25-33
Core Speed 33MHz
U5S-SUPER33
Core Speed 33—40MHz U5S-SUPER33/40

Core Speed

CPUID
Stepping

40MHz

0423
Unknown (A ?)

U5S-SUPER40

U5SD

Vcc
TCASE
Level 1 Cache
Package
5V
0°C - +85°C ???
8—Kbyte
168—pin ceramic PGA
Core Speed 25MHz U5SD-SUPER25
Core Speed 33MHz U5SD-SUPER33
Core Speed 40MHz U5SD-SUPER40

U5SF

Vcc
TCASE
Level 1 Cache
Package
5V
0°C - +85°C ???
8—Kbyte
???—pin LQFP
Core Speed 33MHz U5SF-SUPER33

U5SX

Vcc
TCASE
Level 1 Cache
Package
5V
0°C - +85°C ???
8—Kbyte
168—pin ceramic PGA
Core Speed
Package
???
208—pin PQFP
U5SX 486-A

Core Speed

CPUID
Stepping

33MHz

0423
Unknown (A ?)

U5SX 486-33

Core Speed
Package
 

33MHz(40MHz ???)
208—pin PQFP
on PGA Adaptor

U5SX 486-33F /40
Core Speed 33MHz U5SX 486-33P (Green H/S)

Core Speed

CPUID
Stepping

40MHz

0423
Unknown (A ?)

U5SX 486-40
Core Speed 40MHz U5S-SUPER40
Core Speed
Package
40MHz
208—pin PQFP
U5S-SUPER40 PQFP

U486DX2

   
Core Speed ???MHz U5 GREEN CPU