The document introduces the MSM66573 family of highly functional CMOS 16-bit single chip microcontrollers, which utilize Oki's proprietary CPU core. It features multi-function timers for periodic and timed measurements. It also provides a serial interface and a high-speed bus interface for communication with external devices. This microcontroller is suitable for digital audio devices such as Mini-Disc and MP3 players.
The MSM66573 family consists of highly functional CMOS 16-bit single chip microcontrollers utilizing the proprietary nX-8/500S CPU core. These devices are optimized for digital audio applications such as Mini-Disc players and MP3 players, offering high-speed arithmetic computations and bit processing functions.
The family includes various versions including low voltage (2.4 to 3.6 V) and standard (4.5 to 5.5 V) operating ranges, with options for mask ROM, OTP ROM, and flash ROM programmable with a single power supply.
| CPU Core | nX-8/500S, Oki's proprietary CPU core |
|---|---|
| Internal ROM Size | 64 KB (max. external 1 MB) |
| Internal RAM Size | 4KB (max. external 1 MB) |
| I/O Pins | 75 I/O pins with programmable pull-up resistors |
| Timers | 16-bit free running timer x 1ch, Compare out/capture input x 2ch |
| A/D Converter | 10-bit A/D converter, 8-ch multiplexer |
The low-voltage version (MSM66573L) can be programmed with a single 2.4 V minimum power supply.
The standard voltage version operates at a maximum frequency of 30 MHz.
There are a total of seven interrupt channels, including six maskable and one non-maskable.