HL11.DEC RM intel
Notebooks will sport 3.3-V 486 with power management, expect to run
four hours
All-static i486SL integrates 486DX core with SL power-management
architecture, including system-management interrupts
THe latest in the proliferating 486 family, the i486SL from Intel, comes
initially running 25 and 33 MHz. THe fully static, 3.3-V chip includes
system management mode like the 386SL, as well as a peripheral interface
(PI) bus connection, usable for graphics controllers and flash card
drives. Also on chip is an ISA bus controller and dynamic-RAM controller.
The functionality is full 486DX, with floating-point hardware included.
Its power supply is always 3.3 V, but with 5 V on a second power pin it
can talk to 5-V peripherals No SX version is planned, but who knows. The
chip works with the 82360SL I/O chip, the existing companion to the 386SL.
A low-power version of the I/O chip will work with both 3.3-V and 5-V
peripherals. One package option, the PQFP, is the same as the 386SL
package. Pinouts are similar, but not identical. The shrink QFP (SQFP)
and socketed land grid array (LGA) are available for new designs. The
82360SL comes in PQFP and SQFP. The PI bus shares address and data lines
with the ISA bus, but runs at local bus frequency, instead of the 8 MHz of
ISA. Like ISA, it has 24-bit addresses and 16-bit data. Its control lines
include sepaarate chip selects for VGA and flash disks. An evaluation kit
is available (25-MHz 486SL, $269 ea/1,000; 82360SL, $32 ea/1,000; evaluation
kit $5,750–available now) Intel Corp. Santa Clara, CA Barbara Holtz
408-765-4302
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