Description
Designed around the RP5C01 RTC chip, this kit gives your system the ability to remember the date and time when power is off. Its powered offline with a CR2450 battery.
What is it?
A complete kit to add a battery backed Real Time Clock with a small onboard battery backed RAM for system configurations. This RAM can be used to store machine specific settings, such as boot screen color and mode.
The optional MSX F4 boot register feature, gives your the boot ROM the ability to determine if the system has performed a cold or warm boot.
It also includes a reliable power-on-reset feature, sending a RESET signal to your CPU when power is first applied.
Key Features
- MSX2 compatible Real Time Clock
- Optional Reset on Power signal
- MSX2+ compatible F4 cold/boot register
- Compatible with RomWBW
Key difference with Yellow MSX RGB
| Description | Yellow MSX Version | Green Stegosaur Version |
|---|---|---|
| Calibration | on board trimmer capacitor | none |
| Battery | CR2032 | CR2450 |
| Diagnostic ‘Alarm/Timing’ Signal | exposed with pull up resistor | Exposed, but no pull up resistor |
| PCB Height | 8.0 cm | 5.5 cm |
| Colour | Yellow | Green |
What’s included?
The full kits includes everything you need (PCB, capacitors, IC sockets, connectors, and the ICs), with the retro chips optionally included.
The set of tested retro chips can be optionally included, or you can source your own.
The parts to enable the MSX specific F4 register feature can be optionally included.
A battery is not included. Requires a standard coin CR2450 battery.
What else do I need?
This module can work in a standard RC2014/RCBus RomWBW bootable system, or a MSX configured bootable system.
Product Details
For full product description, construction notes and other help – please see the main guide page at: https://www.dinoboards.com.au/stegosaur/rtc/
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