High-Reliability CMOS 8-Bit Microprocessor
October 17, 2008
The CDP1802A/3 High-Reliability LSI CMOS 8-bit register
oriented Central-Processing Unit (CPU) is designed for use
as a general purpose computing or control element in a wide
range of stored-program systems or products.
The CDP1802A/3 includes all of the circuits required for
fetching, interpreting, and executing instructions which have
been stored in standard types of memories. Extensive
input/output (I/O) control features are also provided to
facilitate system design.
The 1800 Series Architecture is designed with emphasis on
the total microcomputer system as an integral entity so that
systems having maximum flexibility and minimum cost can be
realized. The 1800 Series CPU also provides a synchronous
interface to memories and external controllers for I/O devices,
and minimizes the cost of interface controllers. Further, the I/O
interface is capable of supporting devices operating in polled,
interrupt-driven, or direct memory-access modes.
The CDP1802AC/3 is functionally identical to its
predecessor, the CDP1802. The “A” version includes some
performance enhancements and can be used as a direct
replacement in systems using the CDP1802.
This type is supplied in a 40 Ld dual-in-line sidebrazed
ceramic package (D suffix).
For Use In Aerospace, Military, and Critical Industrial
• Minimum Instruction Fetch-Execute Time of 4.5µs
(Maximum Clock Frequency of 3.6MHz) at VDD = 5V,
TA = +25°C
• Operation Over the Full Military
Temperature Range . . . . . . . . . . . . . . . -55°C to +125°C
• Any Combination of Standard RAM and ROM Up to
• 8-Bit Parallel Organization With Bi-directional Data
Bus and Multiplexed Address Bus
• 16x16 Matrix of Registers for Use as Multiple Program
Counters, Data Pointers, or Data Registers
• On-Chip DMA, Interrupt, and Flag Inputs
• High Noise Immunity . . . . . . . . . . . . . . . . . . 30% of VDD
• Pb-Free (RoHS compliant)
-55 to +125
Up to 3.2MHz
40 Ld SBDIP
NOTE: These Intersil Pb-free Hermetic packaged products employ 100% Au plate - e4 termination finish, which is RoHS compliant and compatible
with both SnPb and Pb-free soldering operations.
FN1441 Rev 3.00
October 17, 2008
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