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ETL9444 Datasheet(PDF) 8 Page - STMicroelectronics

Part # ETL9444
Description  4-BIT NMOS MICROCONTROLLERS
PDF  27 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ETL9444 Datasheet(HTML) 8 Page - STMicroelectronics

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Figure 2 : Connection Diagrams.
Pin
Description
L 7-L 0
8 Bidirectional I/O Ports with TRI-STATE
®
G 3-G0
4 Bidirectional I/O Ports
D 3-D 0
4 General Purpose Outputs
IN 3-IN 0
4 General Purpose Inputs (COP444L only)
SI
Serial Input (or counter input)
SO
Serial Output (or general purpose output)
SK
Logic-controlled Clock (or general purpose output)
CKI
System Oscillator Input
CKO
System Oscillator Output (or general purpose input, RAM power supply, or SYNC input)
RESET
System Reset Input
VCC
Power Supply
GND
Ground
Figure 3 : Input/output Timing Diagrams (crystal divide-by-16 mode).
ETL9444/9445–ETL9344/9345
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