TMU3100 Datasheet, PDF (7/18 Pages) List of Unclassifed Manufacturers – The TMU3100 is an 8-bit microprocessor embedded device tailored to USB/PS2 Keyboard application

DS-TMU3100
2. I/O Port
2.1 KSO[15:0]
These pins are used as keyboard scan outputs. They have at least 4mA drive and sink strength.
Read
Data
50uA
Pin
Data
/WR
D
Q
Data
Register
CK
4mA
KSO[15:0]
2.2 KSI[7:0]
These pins are used as keyboard scan inputs. Each one of them has a pull up resistor. In addition, each KSI
pin can cause Keyboard interrupt (KBDint) if the corresponding interrupt mask bit (KBDmask) is 0. The
KBDint is asserted at the falling edge of KSI pin.
Read
Pin
Data
KSI[7:0]
2.3 PA[3:0]
These pins are similar to KSO pins, except data are read from pin. They can be used as input or open drain
output.
50uA
Data
D
Q
Data
Register
4mA
CK
/WR
PA[3:0]
Pin
Read
Data
7
tenx technology, inc.
Rev 1.4 2004/03/01