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PC87591L датащи(PDF) 121 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
номер детали PC87591L
подробное описание детали  LPC Mobile Embedded Controllers
PDF  437 Pages
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производитель  NSC [National Semiconductor (TI)]
домашняя страница  http://www.national.com
Logo NSC - National Semiconductor (TI)

PC87591L датащи(HTML) 121 Page - National Semiconductor (TI)

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Embedded Controller Modules (Continued)
Revision 1.07
121
www.national.com
Port Weak Pull-Up Registers (PxWPU, PyWPU)
These registers control the pull-up for the related pin, when it used either as GPIO or in its alternate function. The pull-up is
enabled when the corresponding bit of PxWPU or PyWPU is set and the port buffer is in TRI-STATE. Otherwise, the pull-up
is disabled (i.e., high impedance).
On reset, PxWPU or PyWPU is cleared (0), disabling all pull-ups.
Location: See Appendix A
Type: R/W
Bit
76543210
Name
Px Port Weak Pull-Up Enable
Reset
00000000
Bit
76543210
Name
Py Port Weak Pull-Up Enable
Reset
00000000



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