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PC87591L Datasheet(PDF) 377 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) 377 Page - National Semiconductor (TI)

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7.0 Device Specifications (Continued)
Revision 1.07
377
www.national.com
7.3
INTERNAL RESISTORS
DC Test Conditions
Notes:
1. The equivalent resistance of the pull-up resistor is calculated by RPU = (VSUP − VPIN) / IPU.
2. The equivalent resistance of the pull-down resistor is calculated by RPD = VPIN / IPD.
7.3.1
Pull-Up Resistor
Symbol: PUnn
7.3.2
Pull-Down Resistor
Symbol: PDnn
Symbol
Parameter
Conditions
Typical
Min
Max
Unit
RPU
1
1. Not tested; guaranteed by characterization.
Pull-up equivalent resistance
VPIN =0V
nn
nn – 34% nn + 47%
K
Ω
VPIN = 0.17 VDD
nn – 44%
K
Ω
VPIN = 0.8 VDD
nn – 41%
K
Ω
Symbol
Parameter
Conditions
Typical
Min
Max
Unit
RPD
1
1. Not tested; guaranteed by characterization.
Pull-down equivalent resistance
VPIN =VDD
nn
nn – 35% nn + 60%
K
Ω
VPIN = 0.17 VDD
nn – 37%
K
Ω
VPIN = 0.8 VDD
nn – 48%
K
Ω
Device
Under
Test
RPU
Pull-Up Resistor Test Circuit
Pull-Down Resistor Test Circuit
VSUP
Pin
A
IPU
V
VPIN
Device
Under
Test
RPD
VSUP
Pin
A
IPD
V
VPIN
VSUP
Figure 123. Internal Resistor Test Conditions, TA =0°Cto70°C, VSUP = 3.3V



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