8275: Difference between revisions
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=Pinout= | =Pinout= | ||
<pre> | <pre> | ||
DIP40 | DIP40 | ||
+---\/---+ | |||
LC3 | 1 40| Vcc | |||
LC2 | 2 39| LA0 | |||
LC1 | 3 38| LA1 | |||
LC0 | 4 37| LTEN | |||
DRQ | 5 36| RVV | |||
*DACK | 6 35| Vsp | |||
HRTC | 7 34| GPA1 | |||
VRTC | 8 33| GPA0 | |||
*RD | 9 32| HLGT | |||
*WR |10 31| IRQ | |||
LPEN |11 30| CCLK | |||
DB0 |12 29| CC6 | |||
DB1 |13 28| CC5 | |||
DB2 |14 27| CC4 | |||
DB3 |15 26| CC3 | |||
DB4 |16 25| CC2 | |||
DB5 |17 24| CC1 | |||
DB6 |18 23| CC0 | |||
DB7 |19 22| *CS | |||
GND |20 21| A0 | |||
+--------+ | |||
</pre> | </pre> | ||
=Frequency= | =Frequency= | ||
Set reader to FREQ, put black probe to GND, red probe to 30 to measure CPU clock | |||
=External links= | =External links= | ||
| Line 13: | Line 37: | ||
=Files= | =Files= | ||
<gallery widths="150px"> | <gallery widths="150px"> | ||
File:8275.pdf|8275 Datasheet | |||
</gallery> | </gallery> | ||
[[Category:Other Chips]] | [[Category:Other Chips]] | ||
[[Category:DIP40-600mil]] | [[Category:DIP40-600mil]] | ||
Latest revision as of 22:00, 24 March 2019
Programmable CRT controller
Pinout
DIP40
+---\/---+
LC3 | 1 40| Vcc
LC2 | 2 39| LA0
LC1 | 3 38| LA1
LC0 | 4 37| LTEN
DRQ | 5 36| RVV
*DACK | 6 35| Vsp
HRTC | 7 34| GPA1
VRTC | 8 33| GPA0
*RD | 9 32| HLGT
*WR |10 31| IRQ
LPEN |11 30| CCLK
DB0 |12 29| CC6
DB1 |13 28| CC5
DB2 |14 27| CC4
DB3 |15 26| CC3
DB4 |16 25| CC2
DB5 |17 24| CC1
DB6 |18 23| CC0
DB7 |19 22| *CS
GND |20 21| A0
+--------+
Frequency
Set reader to FREQ, put black probe to GND, red probe to 30 to measure CPU clock
External links
Files
-
8275 Datasheet
