MN6221
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Melody-Alarm Generator
Pinout
DIP18
+---\/---+
Vdd | 1 18| Vss
NO | 2 17| MI3
PO | 3 16| MI2
SI | 4 15| MI1
SO1 | 5 14| EV2
SO2 | 6 13| EV1
TST1 | 7 12| OSC3
TST2 | 8 11| OSC2
ALON | 9 10| OSC1
+--------+
Frequency
DIP18
Set reader to FREQ, put black probe to GND, red probe to 10,11 and 12 to measure CPU clock
External links
Files
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MN6221 Datasheet
