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PC87591L Datasheet(PDF) 45 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # PC87591L
Description  LPC Mobile Embedded Controllers
PDF  437 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

PC87591L Datasheet(HTML) 45 Page - National Semiconductor (TI)

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2.0 Signal/Pin Description and Configuration (Continued)
Revision 1.07
45
www.national.com
2.2.6
General-Purpose I/O (GPIO) and Internal Keyboard Scan
Signal
128-Pin
LQFP
176-Pin
LQFP
I/O
Buffer
Type
Power
Well
Description
KBSIN7-0
60-53
80-77,
74-71
IINCS/INAC VCC Keyboard Scan Inputs. The input side of the
internal keyboard scan lines. These inputs may
be configured to work with either Schmitt trigger
inputs, for operation with switch based
keyboards, or with internal analog voltage
comparators to interface to a resistive keyboard
matrix. KBSIN7-0 are referenced to VCC and
are designed to work using a 3.3V supply. See
Section 4.14 on page 208 for more details.
KBSOUT15-0 52-37
68-64,
61-56,
53-49
OOD6
VCC Keyboard Scan Outputs. The output side of
the internal keyboard scan lines.



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