Um8250b: Difference between revisions
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'''Asynchronous Communication Element (ACE)''' | |||
=Pinout= | |||
<pre> | |||
DIP40 | |||
+---\/---+ | |||
D0 | 1 40| Vdd | |||
D1 | 2 39| *RI | |||
D2 | 3 38| *DCD | |||
D3 | 4 37| *DSR | |||
D4 | 5 36| *CTS | |||
D5 | 6 35| MR | |||
D6 | 7 34| *OUT1 | |||
D7 | 8 33| *DTR | |||
RCLK | 9 32| *RTS | |||
SIN |10 31| *OUT2 | |||
SOUT |11 30| INTRPT | |||
CS0 |12 29| NC | |||
CS1 |13 28| A0 | |||
*CS2 |14 27| A1 | |||
*BAUDOUT |15 26| A2 | |||
XTAL1 |16 25| *ADS | |||
XTAL2 |17 24| CSOUT | |||
*DOSTR |18 23| DDIS | |||
DOSTR |19 22| DISTR | |||
Vss |20 21| *DISTR | |||
+--------+ | |||
</pre> | |||
=Frequency= | |||
'''DIP40'''<br> | |||
Set reader to FREQ, put black probe to GND, red probe to 16 and to 17 to measure CPU clock | |||
=External links= | |||
=Files= | |||
<gallery widths="150px"> | <gallery widths="150px"> | ||
File:um8250b.pdf|Datasheet | File:um8250b.pdf|UM8250B Datasheet | ||
</gallery> | </gallery> | ||
[[Category: | [[Category:Other Chips]] | ||
[[Category:DIP40]] | |||
Revision as of 13:07, 23 October 2009
Asynchronous Communication Element (ACE)
Pinout
DIP40
+---\/---+
D0 | 1 40| Vdd
D1 | 2 39| *RI
D2 | 3 38| *DCD
D3 | 4 37| *DSR
D4 | 5 36| *CTS
D5 | 6 35| MR
D6 | 7 34| *OUT1
D7 | 8 33| *DTR
RCLK | 9 32| *RTS
SIN |10 31| *OUT2
SOUT |11 30| INTRPT
CS0 |12 29| NC
CS1 |13 28| A0
*CS2 |14 27| A1
*BAUDOUT |15 26| A2
XTAL1 |16 25| *ADS
XTAL2 |17 24| CSOUT
*DOSTR |18 23| DDIS
DOSTR |19 22| DISTR
Vss |20 21| *DISTR
+--------+
Frequency
DIP40
Set reader to FREQ, put black probe to GND, red probe to 16 and to 17 to measure CPU clock
External links
Files
-
UM8250B Datasheet
