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PC87373 データシート(PDF) 162 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
部品番号 PC87373
部品情報  LPC SuperI/O with Glue Functions
PDF  174 Pages
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メーカー  NSC [National Semiconductor (TI)]
ホームページ  http://www.national.com
Logo NSC - National Semiconductor (TI)

PC87373 データシート(HTML) 162 Page - National Semiconductor (TI)

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13.0 Device Characteristics (Continued)
162
www.national.com
Revision 1.1
Low-Frequency Clock Timing
Figure 53. CLOCKI32 Timing
Symbol Figure Clock Input Parameters Reference Conditions
CLOCKI32
Units
Min
Typ
Max
tCP
53
Clock Period1 (50%-50%)
1. Not tested. Guaranteed by design.
30.4871
30.517578
30.5481
µs
FCK
−
Clock Frequency
F32TYP − 0.1%
32.768
(F32TYP)
F32TYP + 0.1% KHz
t32KW
53
Clock wake-up time
VSB3 stable to clock
start toggling
System dependent2
2. If t32KW of the CLOCKI32 input is lower than 0.5 ms, use the 0.5 ms value in calculations involving the total
wake-up time of the low-frequency clock (t32KW + t32KVAL).
t32KVAL
53
Clock valid time1
Clock start toggling to
clock valid
256 * tCP
CLOCKI32
(32.768 KHz)
t32KW
VSB3 (Power)
VSB3ONmin
tCP
t32KVAL
(Internal)
32 KHz Domain



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