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6545-1 fiches techniques PDF

Commodore - CRT Controller

Numéro de référence 6545-1
Description CRT Controller
Fabricant Commodore 
Logo Commodore 





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6545-1 fiche technique
,..,commodore
~ aernlcanductoor group
~UYAJ@@
MPS
6545-1
CRT
CONTROLLER
(CRTC)
6545-1 CRT Controller (CRTC)
CONCEPT
The 6545-1 is a CRT Controller intended to provide capability for interfacing the 6500/6800
microprocessor families to CRT or TV-type raster scan displays. A unique feature is the inclusion of
several modes of operation, so that the system designer can configure the system with a wide
assortment of techniques.
FEATURES:
• Single +5 volt (±5%) power supply.
• Alphanumeric and limited graphics
capabi Iities.
• Fully programmable display (rows, columns,
blanking, etc.).
• Non-interlaced scan.
.50/60 Hz operation.
• Fully programmable cursor.
• External light pen capability.
• Capable of addressing up to 16K character
video display RAM.
• No DMA required.
• Pin-compatible with MC6845.
• Row/Column or straight-binary addressing
for video display RAM.
• Internal 8-bit status register.
I
ORDERING INFORMATION
MXS 6545-1 1 MHz
MXS 6545A-1 2 MHz
- - - - PACKAGE DESIGNATOR
C = CERAMIC
P = PLASTIC
6545-1 PIN DESIGNATION
GNO
RES
LPEN
CCO/MAO
CC1/MAl
CC2/MA2
CC3/MA3
CC4/MA4
CC5/MA5
CC6/MA6
CC7/MA7
CRO/MA8
CR1/MA9
CR2/MA10
CR3/MA11
CR4/MA12
CR5/MA13
DISPLAY ENA8LE
CURSOR
VCC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40 VSYNC
39 HSYNC
38 RAO
37 RAl
36 RA2
35 RA3
34 RA4
33 080
32 081
31 082
30 083
29 084
28 085
27 086
26 087
25 CS
24 RS
23 !1\2
22 R/w
21 CCLK
2-117

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