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MSM66573 Family User's Manual
Chapter 1 Overview
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1. Overview
1.1
Overview
The MSM66573 family of highly functional CMOS 16-bit single chip microcontrollers utilizes
the nX-8/500S, Oki’s proprietary CPU core.
A wide variety of internal multi-functioned timers provide timer functions such as compare
out, capture, event counter, auto reload, and PWM, and can be used for periodic and timed
measurements. In addition to the main clock, there is a sub clock (32.768 kHz) that is
suitable for low power applications. A three channel serial interface and a high-speed bus
interface that has separate address and data buses and does not require external address
latches are provided as interfaces to external devices.
With a 16-bit CPU core that enables high-speed 16-bit arithmetic computations and a
variety of bit processing functions, this general-purpose microcontroller is optimally suited
for PC peripheral devices such as a high-speed CD-ROM, or system control such as AV
and OA devices.
There is also a Flash ROM version (MSM66Q573L/MSM66Q573) that is programmable
with a single power supply (VDD = 2.4 to 3.6 V/4.5 to 5.5 V).
[Note]
The MSM66P573/MSM66Q573Y/MSM66Q573LY are supplied as stock lasts.
1.2
Features
The MSM66573 family has the following features.
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Instruction set with a wide variety of instructions
Dual instraction set
8- and 16-bit arithmetic instructions
Multiply and divide instructions
(High speed multiplier is not provided)
Bit manipulate instructions
Bit logical instructions
ROM table reference instructions
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Variety of addressing modes
Register addressing
Page addressing
Pointing register indirect addressing
Stack addressing
Immediate addressing
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Minimum instruction cycles
67 ns at 30 MHz (4.5 to 5.5 V)
143 ns at 14 MHz (2.4 to 3.6 V)
61
ms at 32.768 kHz (2.4 to 3.6 V/4.5 to 5.5 V)
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Clock oscillation circuits
Main clock : 30 MHz (max.) crystal oscillator or ceramic resonator oscillator circuit
Subclock
: 32.768 kHz crystal oscillator circuit