This manual describes how to use the SH3000 MicroBuddy™.
The SH3000 MicroBuddy™ provides mandatory microcontroller support functions such as CPU supervision, clock management, real‑time clock, periodic interrupt, and auxiliary features. It can operate stand‑alone or under microcontroller control via a single‑wire interface that also carries interrupt/wake‑up signals.
The device stores configuration, calibration, and status in a 36‑byte register bank and supports backup power from various battery types or a super‑capacitor. The manual includes register maps, timing diagrams, and programming guidelines for developers.
| Clock‑frequency accuracy (no crystal) | +0.5% |
|---|---|
| Clock‑frequency accuracy (32.768 kHz crystal) | +0.0256% (+256 ppm) |
| Control register storage | 36 bytes |
| Backup power options | 2/3‑cell zinc‑carbon/alkaline, 2/3‑cell mercury, 2/3/4‑cell NiCd/NiMH, 1‑cell Li/Li+, super cap |
A microcontroller, the SH3000 chip, and a bypass capacitor are needed for a complete system.
It uses a single‑wire interface that handles bi‑directional communication and the interrupt/wake‑up signal.