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Sun Microsystems microSPARC II
  Sun Microsystems microSPARC II STP 1012, 70 MHz
  Sun Microsystems microSPARC II STP 1012A, 85 MHz
  Sun Microsystems microSPARC II STP 1012, 110 MHz
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The Sun Microsystems microSPARC II Processor
Sun microSPARC II
The microSPARC II, introduced in 1994, is a highly integrated microprocessor, implementing the SPARC V8 specification. It includes a variety of chipset logic functions on the chip like a programmable DRAM controller, graphics interface support, internal and boundary scan through JTAG interface, power management and clock generation capabilities. It was targeted for low-cost uniprocessor applications operating at low voltage for optimized power consumption.
 
The microSPARC II was used in Sun SPARCstation 4, 5 and Voyager workstations and the JavaStation thin client.
Sun Microsystems microSPARC II STP 1012, 70 MHz
Sun Microsystems microSPARC II STP 1012, 70 MHz Top Side
SUN
STP1012PGA
MB86904
JAPAN
9422 Y89F
-70
Sun Microsystems microSPARC II STP 1012, 70 MHz Back Side
Comment by Rambo (m_roguski[at]yahoo.com):
Not surprisingly, these chips were manufactured by Fujitsu, as the logo and mark suggests: MB86904
 
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Core Frequency:70 MHz
Data bus (ext.):32 Bit
Address bus:32 Bit
Transistors:2,300,000
Circuit Size:0.50 µ
Voltage:3.3 V
Introduced:1994
Manufactured:week 22/1994
Made in:Japan
L1 Cache:8+16 KB
Package Type:Ceramic
PGA-321
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Sun Microsystems microSPARC II STP 1012A, 85 MHz
Sun Microsystems microSPARC II STP 1012A, 85 MHz Top Side
microSPARC II
STP1012APGA
MB86905
JAPAN
9502 Y33 -85
Sun
(c)(M)1994, SMI
Sun Microsystems microSPARC II STP 1012A, 85 MHz Back Side
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Core Frequency:85 MHz
Data bus (ext.):32 Bit
Address bus:32 Bit
Transistors:2,300,000
Circuit Size:0.50 µ
Voltage:3.3 V
Introduced:1994
Manufactured:week 02/1995
Made in:Japan
L1 Cache:8+16 KB
Package Type:Ceramic
PGA-321
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Sun Microsystems microSPARC II STP 1012, 110 MHz
Sun Microsystems microSPARC II STP 1012, 110 MHz Top Side
microSPARC II
STP1012PGA
MB86904
JAPAN
9530 Y57H
-110
Sun
(C)(M)1995, SMI
Sun Microsystems microSPARC II STP 1012, 110 MHz Back Side
add comment
Core Frequency:110 MHz
Data bus (ext.):32 Bit
Address bus:32 Bit
Transistors:2,300,000
Circuit Size:0.50 µ
Voltage:3.3 V
Introduced:1994
Manufactured:week 30/1995
Made in:Japan
L1 Cache:8+16 KB
Package Type:Ceramic
PGA-321
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