Intel 386 User Manual

Intel386™ EX EMBEDDED MICROPROCESSOR USER’S MANUAL
17-10
Figure 17-4. WDT Reload Value Registers (WDTRLDH and WDTRLDL)
WDT Reload Value (High)
WDTRLDH
(read/write)
Expanded Addr:
ISA Addr:
Reset State:
F4C0H
—
003FH
15 8
WR31 WR30 WR29 WR28 WR27 WR26 WR25 WR24
7 0
WR23 WR22 WR21 WR20 WR19 WR18 WR17 WR16
WDT Reload Value (Low)
WDTRLDL
(read/write)
Expanded Addr:
ISA Addr:
Reset State:
F4C2H
—
FFFFH
15 8
WR15 WR14 WR13 WR12 WR11 WR10 WR9 WR8
7 0
WR7 WR6 WR5 WR4 WR3 WR2 WR1 WR0
Bit
Number
Bit
Mnemonic
Function
High 15–0 WR31:16 WDT Reload Value (High Word and Low Word):
Write the high word of the reload value to WDTRLDH and the low word
to the WDTRLDL.
Low 15–0 WR15:0

Intel 386 Specifications

General

Architecture	x86
Clock Speed	12 MHz to 40 MHz
Transistor Count	275, 000
Data Bus Width	32-bit
Address Bus Width	32-bit
Instruction Set	x86
Introduced	1985
Maximum Memory	4 GB
Operating Modes	Real mode, Protected mode, Virtual 8086 mode
MMU	Yes
Voltage	5V
Model	Intel 386
Package	PGA
Process	1.5 μm to 1 μm