RAMDAC 256 x 18: Difference between revisions
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File:adv476.pdf|ADV476 Datasheet | File:adv476.pdf|ADV476 Datasheet | ||
File:bt471.pdf|BT471 BT476 | File:bt471.pdf|BT471 BT476 Datasheet | ||
File:hm86171.pdf|HM86171 Datasheet | File:hm86171.pdf|HM86171 Datasheet | ||
</gallery> | </gallery> | ||
Latest revision as of 20:37, 16 January 2023
| BRAND | TAG | NUMBER | PIN COUNT | OUTPUT | MARKINGS |
|---|---|---|---|---|---|
| Analod Devices | ADV | 476 | DIP28-600mil LCC44 | ADV476 | |
| Brooktree | BT | 471 | LCC44 | . | BT471KP BT471KPJ |
| Brooktree | BT | 476 | DIP28-600mil LCC44 | . | BT476KP BT476KPJ |
| Hualon Microelectronics | HM | 86171 | DIP28-600mil | HM86171 |
Random Access Memory Digital-to-Analog Converter 256 x 18 Color Palette (DIP28, 600mil)(LCC44)
Size
| bit | Byte (unpadded) | Hex |
|---|---|---|
| 4608 | 576 | 1200hex |
Pinout
DIP28
+---\/---+
RED | 1 28| Vcc
GREEN | 2 27| RS1
BLUE | 3 26| RS0
Iref | 4 25| *WR
P0 | 5 24| D7
P1 | 6 23| D6
P2 | 7 22| D5
P3 | 8 21| D4
P4 | 9 20| D3
P5 |10 19| D2
P6 |11 18| D1
P7 |12 17| D0
Pclk |13 16| *BLANK
Vss(gnd) |14 15| *RD
+--------+
LCC44-690x690mil (valid for 476)
+-----------------------------------------------+
| 40 Clock | 7 *BLANK | 18 RS1 | 29 COMP |
| 41 GND | 8 D0 | 19 GND | 30 OPA |
| 42 GND | 9 D1 | 20 Vcc | 31 Vref |
| 43 GND | 10 D2 | 21 Vcc | 32 P0 |
| 44 GND | 11 D3 | 22 Vcc | 33 P1 |
| 1 NC | 12 D4 | 23 GND | 34 P2 |
| 2 GND | 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 |
+-----------------------------------------------+
LCC44-690x690mil (valid for 471)
+-----------------------------------------------+
| 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 |
+-----------------------------------------------+
External links
Frequency
DIP28
Set reader to FREQ, put black probe to GND, red probe to 13 to measure CPU clock
PLCC44
Set reader to FREQ, put black probe to GND, red probe to 40 to measure CPU clock
Files
-
ADV476 Datasheet
-
BT471 BT476 Datasheet
-
HM86171 Datasheet
