TPM754A NXP Semiconductors, TPM754A Datasheet - Page 9

• Manufacturer Part Number: TPM754A
• Description: Microcontroller With Trackpoint Microcode From Ibm
• Manufacturer: NXP Semiconductors

–X
TYPICAL WIRING SHOWN FOR
STICK WIRING MAY VARY
FORCE SENSOR
–Y
+Y
REFERENCE ONLY
+X
10. A Z axis series resistor and a fifth stick terminal may be present.
11. For most current information, see www.ibm.com.
TYPCIAL TARGET SETTINGS
50 counts per Z DAC step
18 counts per XY DAC step
3.2 grams/count XY
10 grams/count Z
NOTES:
1. All resistors 1% low noise unless noted.
2. Middle button switch is optional.
3. Jumper JMP1 is only installed when middle button is not present, otherwise it is not populated.
4. Connectors are shown for reference only.
5. Connection between analog and digital ground must be a single point connection close to the TPM754.
6. Component values that are not specified depend upon stick sensitivity, geometry, impedance, and tolerance.
7. TPM754 Reset pin (Pin 5) can be driven by system power on reset signal (active High). Omit C4, R 8 in this case.
8. If Pin 3 is grounded, positive voltage swing on the stick’s Y terminal will move the cursor downward (–Y), otherwise upward.
9. If Pin 28 is grounded, positive voltage swing on the stick’s terminal will be interpreted as downward (–Z) force, otherwise upward.
X
SEE NOTE 10
SEE NOTE 10
COMMON
Z or +
+
Y
X
C6
0.01uF
C7
0.01uF
C8
0.01uF
R1
13
12
R23
R24
LMC6036
U2
10
6
5
9
14
LMC6036
U2
LMC6036
U2
7
8
R4
R5
LMC6036
R16
R17
2
3
R18
U2
R9
4
11
1
R15
R11
C2
0.01uF
10% OR BETTER
TEMPERATURE STABLE
+
C1
R7
R6
MID
15
16
17
18
21
10
11
12
20
19
26
27
25
9
BUTTON ASSEMBLY
DEC
VREG
XYDB
XYS
WIN
ZIN
YIN
XIN
RMP
XYD
ZDAC
P3.1
P3.2
P3.0
14
13
AVCC
AVSS
BUTTONS
+5
TPM754
1
2
3
4
U1
COM
RIGHT
LEFT
MIDDLE
22
TXD/T1
RXD/T0
VCC
VSS
8
+5
P3.6
P3.3
P1.1
INT0
INT1
RST
X2
X1
5
3
28
23
24
2
4
1
6
7
SEE NOTE 3
12.0MHz
JMP1
+
INVERT Y
INVERT Z
TACTILE
+5
1
1
1
X1
R8
100K
5%
C4
2.2uF
RIGHT
LEFT
MIDDLE
2
2
2
SEE NOTE 8
SEE NOTE 9
JMP2
JMP3
+5
TACTILE FEEDBACK OUTPUT
C3
0.1uF
+5
R10
10K
5%
+5
R2
4.7K
5%
+5
+
R14
10K
5%
+5
+5
C5
10uF
R3
4.7K
5%
CLK
DATA
GND
TO SYSTEM BOARD
+5
+5
MOUSE
6 PIN MINI DIN
CN1
5
6
1
2
3
4
COM
VCC
CLK
DATA
3
1
2
4