28123 Parallax Inc, 28123 Datasheet - Page 116
![TEXT WHAT'S A MICROCONTROLLER](/photos/6/49/64955/mfg_28123_sml.jpg)
28123
Manufacturer Part Number
28123
Description
TEXT WHAT'S A MICROCONTROLLER
Manufacturer
Parallax Inc
Type
Programmingr
Datasheet
1.28123.pdf
(340 pages)
Specifications of 28123
Style
Book
Title
What's a Microcontroller?
Contents
Whats a Microcontroller? Text
Product
Microcontroller Accessories
Core Processor
PIC16C57c
Flash
128 Bytes
Operating Supply Voltage
9 V
Board Size
31 mm x 16 mm
Lead Free Status / RoHS Status
Not applicable / Not applicable
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White
Black
Red
√
√
P15
P14
P13
P12
P11
P10
P9
P8
P7
P6
P5
P4
P3
P2
P1
P0
X2
X3
The jumper allows you to choose the power supply (Vin or Vdd) for the Parallax
Standard Servo. If you are using a 9 V battery, it is best to set it to Vdd. Either setting will
work if you are using a 6 V battery pack. Use only Vdd if you are using a DC supply that
plugs into an AC outlet. Before using a DC supply, make sure to check the specifications for
acceptable DC supplies listed in Appendix D: Batteries and Power Supplies.
Build the circuit shown in Figure 4-6.
Make sure you did not plug the servo in upside-down. The white, red and
black wires should line up as shown in the figure.
Vdd
15
X4
14
Vdd
Vin
13 12
X5
+
Vss
15 14
Red
Black
X4
Vdd
Vin
13 12
X5
Red
Black
www.parallax.com
standard servo
Figure 4-5
Servo
Header
Jumper
Set to Vdd
Figure 4-6
Servo and LED
Indicator on Board
of Education Rev C
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