4D product information for

Acorn BBC Master Clock chip (RTC) HD146818 AP
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Product Title: Acorn BBC Master Clock chip (RTC) HD146818 AP
Manufacturer/Publisher: Hitachi
Stock Code: HIT-M128RTC
QuickCode: 20669
Format: Hardware
Product Group: 8 bit Computing: Hardware
Condition: Refurbished
Availability: Usually available from stock

Description:
HD146818 AP RTC chip (labelled IC11 on the Master motherboard).

This chip contains the Master's Real Time Clock, and also provides 50 bytes worth of RAM storage for various system parameters such as the default serial baud rate, video mode and similar settings. When the system is switched off it is powered by a 4.5V battery pack connected to PL8, thus allowing the clock to keep running and providing non-volatile storage.

Price: £19.99 no UK VAT to pay!
Free UK delivery on orders of £40 or more! (exceptions apply)

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Items marked S/H are secondhand and have a 3 month warranty
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Last updated: Fri, 12 Apr 2024