Differences

This shows you the differences between two versions of the page.

--- mos6581 [2011/10/03 20:39] – wadmin
+++ mos6581 [2011/12/06 13:57] – wadmin
@@ Line 306: / Line 306: @@
 ==== Power Supply ====
+SID power consumption during normal operation is around 600mW. Expect a little more from a 6581 (around 650mW), and less from 6582 and 8580 (around 550W).
+The SID shall heat a lot during operation. The design of the analog part of the chip has been improved from 6581 to 6582/8580, allowing to reduce the operating voltage of the chip, and at the same time lowering its consumed power.
+This also means that 6581 and 6582/8580 __are not compatible__. The power voltages listed below shall be respected, otherwise SID might be damaged.
 === VCC - Pin 25 ===
-This pin shall be powered by a 5V DC coupled power supply. Coupling capacitor of at least 100nf is recommended for proper operation.
+This pin shall be powered by a 5V DC coupled power supply.
+About 70mA is drawn from VCC during normal operation. Coupling capacitor of at least 10uf and filtering capacitor of 100nf are recommended for proper operation.
 === VDD - Pin 28 ===
-This pin shall be connected to either 9V or 12V DC coupled power supply, according to your SID chip version.
+This pin shall be connected to either 9V or 12V DC coupled power supply, according to your SID chip version:
+^  SID Model  ^  VDD Voltage  ^  Current   ^
+|  6581  |  12V  |  25mA  |
+|  6582  |  9V  |  :::  |
+|  8580  |  :::  |  :::  |
+Filtering capacitor of 100nf is recommended.
+=== GND - Pin 14 ===
+Signal Grounds. To lower the noise, the digital and analog ground shall be connected together on this pin and only at it. Keep in mind that the VDD is used only by the analog part of the chip, which includes it inside the analog section. This makes a basic ground plane domain for analog around pins 26, 27 and 28.
+==== Filter Configuration ====
-^  SID Model  ^  VDD Voltage  ^
-|  6581  |  12V  |
-|  6582  |  9V  |
-|  8580  |  :::  |