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Intel i386 SL
  Intel KU80386SLBA-25, Engineering Sample
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The Intel 386 SL Processor
In October 1990, Intel released the 80386SL, which was basically an 855,000 transistor version of the 386SX processor, with cache, bus, and memory controllers, ISA compatibility and power management circuitry. It added a special system management mode (SMM), in which the BIOS could more easily perform power management and other functions without requiring OS support. The 386SL was the first chip specifically made for portable computers.
Intel KU80386SLBA-25, Engineering Sample
Intel KU80386SLBA-25, Engineering Sample Top Side
KU80386SLBA-25
I1402112 ES
ISA SXE89
INTEL(m)(c)'85'90
Intel KU80386SLBA-25, Engineering Sample Back Side
81314GBW
CD 139
B EE
 
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Core Frequency:25 MHz
Board Frequency:25 MHz
Data bus (ext.):32 Bit
Address bus:32 Bit
Transistors:855,000
Circuit Size:1.00
Voltage:5 V
Introduced:Sept. 30, 1991
Manufactured:week 40/1991
CPU Code:i386 SL
Intel S-Spec: SXE89
Package Type:Plastic
PQFP-132
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