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The HX1750 is a true single chip implementation of
the MIL-STD-1750A instruction set architecture,
fabricated on Honeywell's Silicon on Insulator CMOS
(SOI-IV) process. It combines a fast 16 bit
microprocessor, a 40 bit floating point processor,
counters, timers and other peripheral interface logic –
all on a single chip. Advanced architectural features,
innovative circuit design, and the high density and
performance characteristics of the SOI-IV process
enable device operation up to 40 MHz over the full
military temperature range, even after exposure to
ionizing radiation.
The HX1750 offers a wide range of features that
provide for ease of use, versatility and minimum
external components. Simplified memory interface
and adjustable cycle times allows the use of slower,
low cost memory devices.
Most of the options in the MIL-STD-1750A standard
are implemented on the HX1750 chip as listed below:
• Discrete I/O Commands
• DMA Commands
• Console Interface Commands
• Programmed I/O Commands
• IOIC Registers
• Expanded Memory Addressing
• Memory Block Protect
• Two Interval Timers
• Trigger Go Counter
• Start-ROM Support
FEATURES
• Fabricated on Honeywell’s
Radiation Hardened 0.65µm Leff
SOI CMOS Silicon On Insulator
(SOI-IV) process
• Single Supply 5V
• TTL and CMOS Compatible I/O
• 3.3 MIPS DAIS Mix Including
Floating Point
• Maximum Clock Rates 40 MHz, Fully
Static
• Separate Address and Data I/O
Busses
• Two Programmable Timers
• Trigger-go Counter
• Sixteen Levels of Vectored Interrupts
• I/O Maintenance Console Interface
• Expanded Addressing to 1Meg
with MMU
• Total Dose Hardness >1x105
rad(Si)
• Soft Error Rate < 1x10-5
Errors/1750-day
• No Latchup
• Low Power
HX1750
MIL-STD-1750A Microprocessor
HX1750
Several features are incorporated into the HX1750
to simplify the system interface, minimize external
components, reduce external memory speed
requirements, and ease software development.
• A separate address and data bus eliminates
the need for external PIC chip, address
demultiplexers and latches.
• Fast address and data buffers provide signals
early in the cycle allowing use of slower, low
cost memories.
• Enhanced Maintenance Console.
• Standard memory addressing to 64K –
expanded to 1Meg with MMU.
• Access Lock and Key implemented.
• Simple DMA control implemented
• Coprocessor supported in separate address
space.
• Variable System clock – internal
programmable divider (tie Scale pin high or
low) cuts the internal bus cycle time in half.
• Data, Instruction, and I/O access time
independently programmable.
• Full synchronous or asynchronous operation –
programmable wait states for instructions,
data, and I/O. Asynchronous operation is
slaved to an external RDY signal.
• Enhanced set of Built-In-Functions.
• Enhanced Configuration Register.
• Enhanced Maintenance Console – with single
step operation.
The processor executes all mandatory MIL-STD-
1750A instructions including floating point.
Interrupts, fault handling, memory expansion, and
I/O and the optional instructions related to these
operations are also supported in accordance with
MIL-STD-1750A. All instructions are re-startable
after access faults for true demand paging
operation.
RADIATION CHARACTERISTICS
The HX1750 has inherent radiation tolerance
because it is manufactured on SOI-IV CMOS
technology and has many cells from a radiation
hardened library. However, full radiation analysis
and verification was not performed and therefore the
radiation performance is not guaranteed.
ORDERING INFORMATION
Note 1 – Engineering Model Description: Parameters are tested -55°C to 125°C and 24 hour burn-in.
Standard Microcircuit Drawing
The HX1750 Microprocessor can be ordered under the SMD drawing 5962-0520701.
Orders may be faxed to 763-954-2051. Please contact our Customer Service Representative at 1-800-323-8295 for
further information.
For more information about Honeywell’s family of radiation hardened integrated circuit products and services, visit
www.honeywell.com/radhard.
This product and related technical data is subject to the U.S. Department of State International Traffic in Arms Regulations (ITAR) 22 CFR 120-130
and may not be exported, as defined by the ITAR, without the appropriate prior authorization from the Directorate of Defense Trade Controls, United
States Department of State. Diversion contrary to U.S. export laws and regulations is prohibited. This datasheet includes only basic marketing
information on the function of the product and therefore is not considered technical data as defined in 22CFR 120.10.
Honeywell reserves the right to make changes to any products or technology herein to improve reliability, function or design. Honeywell does not
assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent
rights nor the rights of others.
H
X
1750
Q
N
Y
SOURCE
H = Honeywell
PROCESS
X = 5V SOI
PACKAGE DESIGNATION
X= 121-Lead PGA
Y = 100-Lead LCC
Z = 112-Lead PGA
SCREEN LEVEL
Q = QML Class Q
S = Class S Equivalent
B = Class B Equivalent
E = Engineering Model (1)
TOTAL DOSE HARDNESS
N = No Level Guaranteed
Form #900393
April 2009
©2009 Honeywell International Inc.
Honeywell International Inc.
12001 Highway 55
Plymouth, MN 55441
1-800-323-8295