PC - “Slimline” 22 mm Square Single-Turn Panel Control
Standard Resistance Range
Linear Tapers ½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½500 ohms to 1 megohm
Audio Tapers ½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½ 1 K ohms to 500 K ohms
Total Resistance Tolerance ½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½ ±20 %
Contact Resistance Variation ½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½ 7 % of total resistance
Dielectric Withstanding Voltage (MIL-STD-202, Method 301)
Power Rating @ 70 ºC (Voltage Limited by Power Dissipation or 350 VAC, Whichever is Less)
Linear ½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½ ½75 watt
Operating Temperature Range ½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½+1 °C to +125 °C
Storage Temperature Range½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½ -40 °C to +125 °C
Temperature Coefficient Over Storage Temperature Range ½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½ ±1000 ppm/°C
Vibration ½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½20 G
Total Resistance Shift ½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½±1 % maximum
Voltage Ratio Shift ½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½ ±20 % maximum
Shock ½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½50 G
Total Resistance Shift ½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½±1 % maximum
Voltage Ratio Shift ½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½ ±20 % maximum
Total Resistance Shift ½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½ ±10 % maximum
Rotational Life (No Load) ½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½ 50,000 cycles
Total Resistance Shift (Linear taper) ½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½ ±10 ohms or 12 %, whichever is greater
Total Resistance Shift (Audio taper)½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½ ±20 % maximum
Contact Resistance Variation ½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½±5 % maximum
Moisture Resistance ½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½ MIL-STD-202, Method 103, Condition B
Total Resistance Shift ½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½ ±20 % maximum
IP Rating½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½ IP 40
Stop Strength (1/4 ˝ and 6 mm Shaft Diameters) ½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½ 79½09 N-cm (7 lb½-in½)
Starting (Undetented)½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½ 1½5 N-cm (2½25 oz½-in½) maximum
Running (Undetented) ½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½ 0.18 to 1.06 N-cm (0.25 to 1.5 oz.-in.)
Mounting ½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½ 79½09 N-cm (7 lb½-in½) maximum
Weight (Single Section) ½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½ 21 gm (0½75 oz½) maximum
Terminals ½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½ PC pin or solder lug
Marking ½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½ Manufacturer’s trademark, resistance value, part number, and date code
Ganging ½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½ 1 cup maximum
Hardware ½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½ One lockwasher (H-37-2) and one mounting nut (H-38-11) is shipped with each potentiometer
For additional features or specifications not shown, consult factory½
FOR ORDERING INFORMATION SEE PAGE 4½
1
Electrical Characteristics
1
Environmental Characteristics
Mechanical Characteristics
WARNING
Cancer and Reproductive Harm
www.P65Warnings.ca.gov
Electrical specifications tested at 200 RPM, at room ambient: +25 °C nominal.
*RoHS Directive 2015/863, Mar 31, 2015 and Annex.
Specifications are subject to change without notice. Users should verify actual device performance in their specific
applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the
last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
PC – “Slimline” 22 mm Square Single-Turn Panel Control
Product Dimensions
Axial PC Pins
7.42
(.292)
"F"
"L"
14.7 ± 0.5
DIA.
(.578 ± .020)
22.2 ± 0.25
(.874 ± .010)
11.1
(.437)
PANEL HOLE DIMENSIONS
9.53
(.375)
1 2 3
9.0
DIA.
(.354)
M9 X 0.75-6g SPL
6.25
(.246)
1.52
(.060)
"F" =
.320
(8.13)
6.35
9.53
OR
(.250)
(.375)
11.1
(.437)
2.54
5.08
OR
(.100)
(.200)
0.79
3 PLCS.
(.031)
3.18
DIA.
(.125)
"E" 2 PLCS.
9.14
DIA.
(.360)
"E" =
"L" = SEE SHAFT LENGTH TABLE
Radial PC Pins
"L"
"F"
14.7 ± 0.5
(.578 ± .020)
DIA.
22.2 ± 0.25
(.874 ± .010)
.320
(8.13)
11.1
(.437)
PANEL HOLE DIMENSIONS
9.53
(.375)
8.36
(.329)
1 2 3
11.1
(.437)
0.79
(.031) 3 PLCS.
3.18
DIA.
(.125)
9.14
DIA.
(.360)
.28
(.011)
3 PLCS.
6.25
(.246)
"E" 2 PLCS.
6.35
9.53
OR
(.250)
(.375)
"F" =
"E" =
2.54
5.08
OR
(.100)
(.200)
DIMENSIONS:
MM
(INCHES)
"L" = SEE SHAFT LENGTH TABLE
2
1
Hardware
LOCKWASHER H-37-2
9.58 ± 0.36
(.377 ± .014)
13 ± 0.3
(.512 ± .012)
TOLERANCES EXCEPT WHERE NOTED:
3
.25
(.010)
.13
.XXX = ±
(.005)
.XX = ±
Date Code Description
NUT H-38-11
2.3 ± 0.2
(.091 ± .008)
YYWWM
M = COUNTRY OF MANUFACTURE
(MEXICO)
WW = WEEK NUMBER
YY = LAST TWO DIGITS OF YEAR
MANUFACTURED
M9 x .75
12.52 ± 0.36
(.493 ± .014)
0.56 ± 0.05
(.022 ± .002)
30 ° ± 15 ° TYP.
DIMENSIONS:
MM
(INCHES)
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
PC – “Slimline” 22 mm Square Single-Turn Panel Control
Product Dimensions
SOLDER LUGS
(Dimensions not given are the same as
Axial PC pins.
"L"
"F"
22.2 ± 0.25
(.874 ± .010)
8.36
(.329)
7.75
(.305)
1.02 X 2.29
3 PLCS.
(.040 X .090)
5.08
(.200)
2 PLCS.
2.03
3 PLCS.
(.080)
6.35
9.53
"F" =
OR
(.250)
(.375)
.28
3 PLCS.
(.011)
6.25
(.246)
Axial PC PINS
With Rear Mounting Bracket
6.83
(.269)
"L"
8.31
(.327)
23.37
(.92)
0.76
(.030)
4 PLCS.
15.2
18.87 (.600)
(.743)
17.07
(.672)
1.19
DIA. 7 PLCS.
(.047)
11.43
(.450)
2 PLCS.
"E" 2 PLCS.
5.87
(.231)
2.54
5.08
"E" =
OR
(.100)
(.200)
1.19
DIA. 7 PLCS.
(.047)
7.62
(.300)
2 PLCS.
17.07
(.672)
12.62
(.497)
6.83
(.269)
5.08
(.200)
"E" 2 PLCS.
11.43
2 PLCS.
(.450)
Radial PC PINS
With Side Mounting Bracket
"L"
23.37
(.92)
5.48
(.216)
0.76
4 PLCS.
(.030)
"E" 2 PLCS.
0.79
(.031) 3 PLCS.
2.54
5.08
"E" =
OR
(.100)
(.200)
SHAFT STYLES AND ORIENTATION (Full CCW Rotation)
Shaft Style
C
5.54 ± .076
(.218 ± .003)
Shaft Style
J
3.94 + .051/ - .025
(.155 + .002/ - .001)
Shaft Style
R
6.00 ± 0.05
DIA.
(.236 ± .002)
Shaft Style
B
6.32 + 0.03/ - 0.08
(.249 + .001/ - .003)
DIA.
1.19
(.047)
1.19
(.047)
Shaft Style
Y
1.57
(.062)
DIA.
4.7 ± 0.05
(.185 ± .002)
"D"
6.32 + 0.03/ - 0.08
(.249 + .001/ - .003)
DIA.
"D"
4.75 ± .051
DIA.
(.187 ± .002)
1.6
(.063)
1.6
(.063)
"D" dimensions extend from shaft end to bushing face
"D" = (shaft length, FMS) – (bushing length)
Shaft Orientations
Shaft Styles
C, J
DIMENSIONS:
MM
(INCHES)
Slot depth (Y shaft) 9.65 (.380)
for shafts <1 " (2.54) length;
14.7 (.520) for shafts
≥1
"
(2.54) length
Shaft Styles
B, R
60 ° ± 2 °
Shaft Style
Y
60 ° ± 2 °
120 ° ± 2 °
TOLERANCES EXCEPT WHERE NOTED:
.25
(.010)
.13
.XXX = ±
(.005)
.XX = ±
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
How to Order PC “Slimline” Panel Controls
P
C
W
1
J
-
B
2
4
-
B
A
B
1
0
3
L
RoHS IDENTIFIER
Code Description
L
Compliant
SHAFT LENGTH (FMS)
Code
16
20
24
28
32
36
19
22
24
Description
1/2 ” (12.7 mm) Length
5/8 ” (15.9 mm) Length
3/4 ” (19 mm) Length
7/8 ” (22.2 mm) Length
1 ” (25.4 mm) Length
1-1/8 ” (28.6 mm) Length
Metric
19 mm Length
22 mm Length
24 mm Length
Available Shaft
Styles
B
J
B, C, J, Y
B, C, J, Y
B, C, J, Y
B, C, J, Y
R
R
R
Code
501
102
252
502
RESISTANCE VALUES
TR
Code TR
Code
500
103 10 K
104
1K
203 20 K
254
2.5 K
253 25 K
504
5K
503 50 K
105
TR
100 K
250 K
500 K
1M
ELEMENT TAPER VERSIONS
Code Taper Description
B
Lin. CP ±20 %
D
CW Audio CP ±20 %
G
CCW Audio CP ±20 %
DETENT CONFIGURATIONS
Code Taper Description
A
No Detents
B
10 Detents
C
Center Detent Only
D
20 Detents
E
30 Detents
F
CCW Detent Only
SHAFT STYLES (See Outline Drawing)
Code Description
B
1/4 ” (6.35 mm) Dia. Slotted
C
1/4 ” (6.35 mm) Dia. Flatted
J
3/16 ” (4.76 mm) Dia. Flatted
R
6 mm Dia. Slotted
(Use Metric Lengths Only)
Y
3/16 ” (4.76 mm) Dia. Split Shaft
ANTI-ROTATION LUG
Code Description
J
9:00 Position
D
None
NO. SECTIONS
Single
HOUSING TERMINAL CONFIGURATION
Features
Rear Mounting Bracket
Side Mounting Bracket
Axial Terminals .100 ” (2.54 mm) Centers
Radial Terminals .100 ” (2.54 mm) Centers
Radial Terminals .200 ” (5.08 mm) Centers
Solder Lugs .200” (5.08 mm) Centers
Axial Terminals .200 ” (5.08 mm) Centers
Hardware Included
Available Shaft
Styles
All
B, C, R
1
BUSHING CONFIGURATION
Code Description
W 9 mm x .250 ” (6.35 mm) Length
Threaded M9 x 0.75 6g 5 Pl
L
9 mm x .375 ” (9.53 mm) Length
Threaded M9 x 0.75 6g 5 Pl
Code
A B C D E F G H J K L M N
X
X X
X
X
X
X X
X X
X
X X
X
X X
X
X
X X
X
X
X X
X
X
X X X X
Panel mount hardware not included as standard on bracketed versions.
The sample part number demonstrates the identification code for Bourns
Slimline Potentiometers. The part number shown is a commonly used model,
typically available from stock.
Boldface features are Bourns standard options. All others are available with
higher minimum order quantities.
Asia-Pacific:
Tel: +886-2 2562-4117 • Email: asiacus@bourns.com
EMEA:
Tel: +36 88 885 877 • Email: eurocus@bourns.com
The Americas:
Tel: +1-951 781-5500 • Email: americus@bourns.com
www.bourns.com
REV. 10/20
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
Legal Disclaimer Notice
This legal disclaimer applies to purchasers and users of Bourns
®
products manufactured by or on behalf of Bourns, Inc. and
Unless otherwise expressly indicated in writing, Bourns
®
products and data sheets relating thereto are subject to change
and complete before placing orders for Bourns
®
products.
The characteristics and parameters of a Bourns
®
product set forth in its data sheet are based on laboratory conditions, and
statements regarding the suitability of products for certain types of applications are based on Bourns’ knowledge of typical
requirements in generic applications. The characteristics and parameters of a Bourns
®
®
product with other components
the actual performance of the Bourns
®
®
®
product as meeting the requirements of a particular industry
®
of Bourns products are responsible for ensuring compliance with safety-related requirements and standards applicable to
®
Bourns
®
on a case-by-case basis, use of any Bourns
®
®
®
®
®
Bourns
®
®
standard products that are suitable for use in aircraft
®
standard
the user’s sole risk.
®
and the user for which such Bourns
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custom products shall be negotiated on a case-by-case basis by Bourns
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also apply to such Bourns custom products.
Users shall not sell, transfer, export or re-export any Bourns
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Bourns
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products and Bourns technology and technical data may not under any circumstance be
exported or re-exported to countries subject to international sanctions or embargoes. Bourns
一.首先,我们先看一下它的中断向量表: 由中断向量表,可知如果有任何一个IRQ中断源产生中断,CPU都会到0x18地址读指令。 二.在启动代码中,下面的指令分别在中断向量地址中: 即0x18地址处是指令 b HandlerIRQ b ResetHandler b HandlerUndef ;handler for Undefined mode b HandlerSWI ;ha...[详细]