Maxim Integrated MAXQ Family - Manual (Page 5)

1-3
MAXQ Family User’s Guide
• Real-Time Clock
• 1-Wire® Bus Master
• General-Purpose Digital I/O Ports
1.4 MAXQ10 and MAXQ20 Microcontrollers
This user’s guide covers both the 8-bit MAXQ10 and 16-bit MAXQ20 microcontrollers. The primary difference between the MAXQ10
and MAXQ20 implementations is the width of the internal data bus and ALU. The MAXQ10 design implements an 8-bit internal data
bus and ALU, while the MAXQ20 design implements a 16-bit internal data bus and ALU. This difference is most evident when com-
paring the instruction set, and more specifically, those operations that involve the ALU and accumulators. The registers on the MAXQ10
and MAXQ20 can be either 8 bits or 16 bits wide.
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