28123 Parallax Inc, 28123 Datasheet - Page 180

• Manufacturer Part Number: 28123
• Description: TEXT WHAT'S A MICROCONTROLLER
• Manufacturer: Parallax Inc
• Type: Programmingr

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

P15
P14
P13
P12
P10
P11
P9
P8
Be careful with the resistors connected to P13 and P14. Look carefully at the resistors
connected to P13 and P14 in Figure 6-11. There is gap between these two resistors. The
gap is shown because pin 8 on the 7-segment LED display is left unconnected. A resistor
connects I/O pin P13 to 7-segment LED display pin 9. Another resistor connects P14 to 7-
segment LED display pin 7.
1 k
(All)
LED’s
Ω
E
C
DP
Vss
common
G
F
A
B
Figure 6-10
BASIC Stamp
Controlled 7-
Segment LED
Display
Schematic