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SX28AC/SS Datasheet(PDF) 6 Page - Parallax Inc

No. de pieza SX28AC/SS
Descripción Electrónicos  Configurable Communications Controllers with EE/Flash Program Memory, In-System Programming Capability and On-Chip Debug
PDF  51 Pages
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Fabricante Electrónico  PARALLAX [Parallax Inc]
Página de inicio  https://www.parallax.com/
Logo PARALLAX - Parallax Inc

SX28AC/SS Datasheet(HTML) 6 Page - Parallax Inc

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Parallax SX20AC/SX28AC
www.parallax.com
© Parallax Inc.
Page 6 of 51
Rev 1.6 11/20/2006
2.0
CONNECTION DIAGRAMS
2.1.
Pin Assignments
Figure 2-1: Pin Assignments
2.2.
Pin Descriptions
Table 2-1: Pin Descriptions
Name
Pin Type
Input Levels
Description
RA0
I/O
TTL/CMOS
Bidirectional I/O Pin; symmetrical source / sink capability
RA1
I/O
TTL/CMOS
Bidirectional I/O Pin; symmetrical source / sink capability
RA2
I/O
TTL/CMOS
Bidirectional I/O Pin; symmetrical source / sink capability
RA3
I/O
TTL/CMOS
Bidirectional I/O Pin; symmetrical source / sink capability
RB0
I/O
TTL/CMOS/ST
Bidirectional I/O Pin; comparator output; MIWU/Interrupt input
RB1
I/O
TTL/CMOS/ST
Bidirectional I/O Pin; comparator negative input; MIWU/Interrupt input
RB2
I/O
TTL/CMOS/ST
Bidirectional I/O Pin; comparator positive input; MIWU/Interrupt input
RB3
I/O
TTL/CMOS/ST
Bidirectional I/O Pin; MIWU/Interrupt input
RB4
I/O
TTL/CMOS/ST
Bidirectional I/O Pin; MIWU/Interrupt input
RB5
I/O
TTL/CMOS/ST
Bidirectional I/O Pin; MIWU/Interrupt input
RB6
I/O
TTL/CMOS/ST
Bidirectional I/O Pin; MIWU/Interrupt input
RB7
I/O
TTL/CMOS/ST
Bidirectional I/O Pin; MIWU/Interrupt input
RC0
I/O
TTL/CMOS/ST
Bidirectional I/O Pin
RC1
I/O
TTL/CMOS/ST
Bidirectional I/O Pin
RC2
I/O
TTL/CMOS/ST
Bidirectional I/O Pin
RC3
I/O
TTL/CMOS/ST
Bidirectional I/O Pin
RC4
I/O
TTL/CMOS/ST
Bidirectional I/O Pin
RC5
I/O
TTL/CMOS/ST
Bidirectional I/O Pin
RC6
I/O
TTL/CMOS/ST
Bidirectional I/O Pin
RC7
I/O
TTL/CMOS/ST
Bidirectional I/O Pin
RTCC
I
ST
Input to Real-time Clock/counter
MCLR
I
ST
Master Clear reset input – active low. When not controlled externally, this pin must
be pulled high with a 10 kΩ resistor.
OSC1/In/Vpp
I
ST
Crystal oscillator input; external clock source input
OSC2/Out
O
CMOS
Crystal oscillator output; in R/C mode, internally pulled to Vdd through weak pull-up
Vdd
P
-
Positive supply pin
Vss
P
-
Ground pin
Note: I = input, O = output, I/O = Input/Output, P = Power, TTL = TTL input, CMOS = CMOS input, ST = Schmitt Trigger input, MIWU =
Multi-Input Wakeup input.



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