MSM6585 is a version-up product of the MSM5205 voice synthesis IC. The main improvements are the precision of the internal DA converter, a built-in low-pass filter, and expansion on the sampling frequency. The MSM6585 does not include a control circuit to drive an external memory like the MSM5205. Therefore, the MSM6585 can be connected to not only semiconductor memories, but also other memory media (CD-ROM, etc.) by the control of CPU.
The MSM6585 is an upgraded version of OKI's MSM5205 voice synthesis IC. It adds a higher‑precision 12‑bit DAC, an internal low‑pass filter and a wider range of selectable sampling frequencies (4 kHz, 8 kHz, 16 kHz, 32 kHz). The device can be driven directly by a CPU and works with various memory media such as semiconductor memories or CD‑ROMs.
The datasheet provides pin configurations, electrical characteristics, absolute maximum ratings, recommended operating conditions, and package information for the three available package types (DIP‑18, SOP‑24, SSOP‑30). It also includes timing diagrams and external oscillator recommendations.
| Sampling frequencies | 4 kHz / 8 kHz / 16 kHz / 32 kHz |
|---|---|
| Master clock frequency | 640 kHz |
| Power supply voltage (recommended) | 4.5 V to 5.5 V |
| Operating temperature range | -40 °C to +85 °C |
| DAC resolution | 12‑bit |
| Low‑pass filter attenuation | -40 dB/oct |
| No‑load current consumption | 10 mA |
It supports 4 kHz, 8 kHz, 16 kHz and 32 kHz sampling rates.
The master clock frequency is 640 kHz.
The recommended supply voltage is 4.5 V to 5.5 V.
It operates from –40 °C up to +85 °C.