View source for RAMDAC 256 x 24

{| style="float: right;" border="1" cellpadding="4" cellspacing="0" class="sortable"
|+ style="background:silver" | Cross-Reference
!BRAND
!TAG
!NUMBER
!PIN COUNT
!OUTPUT
!MARKINGS
|-
|Brooktree || BT || 478 || LCC44 || . || BT478KP BT478KPJ
|}

'''Random Access Memory Digital-to-Analog Converter 256 x 24 Color Palette (LCC44)'''

=Size=
{| border="1" cellpadding="4" cellspacing="0"
|-align="left" 
!bit
!Byte (unpadded)
!Hex
|-
|6177 || 768 || 1800hex
|}

=Pinout=
<pre>
              LCC44-690x690mil
+-----------------------------------------------+
| 40 Clock  |  7 *BLANK  | 18 RS1    | 29 COMP  |
| 41 OL0    |  8 D0      | 19 GND    | 30 OPA   |
| 42 OL1    |  9 D1      | 20 Vcc    | 31 Vref  |
| 43 OL2    | 10 D2      | 21 Vcc    | 32 P0    |
| 44 OL3    | 11 D3      | 22 Vcc    | 33 P1    |
|  1 NC     | 12 D4      | 23 SETUP  | 34 P2    |
|  2 NC     | 13 D5      | 24 GND    | 35 P3    |
|  3 GND    | 14 D6      | 25 RED    | 36 P4    |
|  4 Vcc    | 15 D7      | 26 GREEN  | 37 P5    |
|  5 GND    | 16 *WR     | 27 BLUE   | 38 P6    |
|  6 *RS    | 17 RS0     | 28 Iref   | 39 P7    |
+-----------------------------------------------+
</pre>

=External links=
[https://en.wikipedia.org/wiki/RAMDAC RAM-DAC page on wikipedia]

=Frequency=
'''PLCC44'''<br>
Set reader to FREQ, put black probe to GND, red probe to 40 to measure CPU clock

=Files=
<gallery widths="150px">
File:bt471.pdf|BT478 Datasheet
</gallery>

[[Category:RAM]]
[[Category:LCC44-690x690mil]]