* [[Media:Um6845r.umc.pdf|UM6845R (UMC) (aka type 1)]]
* [[Media:Mc6845.motorola.pdf|MC6845 (Motorola) (aka type 2)]] [[Media:Mc6845.pdf|Other datasheet version]]
*[[Media:CRTC-5-HD6345.pdf|HD6345 (Hitachi) (aka type 5)]] Upgraded pin-compatible CRTC chip with advanced functionalities [https://thecheshirec.at/2024/05/07/un-crtc6345-sur-amstrad-cpc/ Upgrading the CPC to HD6345]
== Unused clones ==