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PC87591L 데이터시트(PDF) 217 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
부품명 PC87591L
상세설명  LPC Mobile Embedded Controllers
PDF  437 Pages
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제조업체  NSC [National Semiconductor (TI)]
홈페이지  http://www.national.com
Logo NSC - National Semiconductor (TI)

PC87591L 데이터시트(HTML) 217 Page - National Semiconductor (TI)

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Embedded Controller Modules (Continued)
Revision 1.07
217
www.national.com
Voltage Level Data Buffer - Input 0 through 7 (VOLDAT0-7)
This register holds the voltage level measurement result for inputs 0 through 7.
Location: 00 FD5016 - Input 0
00 FD5216 - Input 1
00 FD5416 - Input 2
00 FD5616 - Input 3
00 FD5816 - Input 4
00 FD5A16 - Input 5
00 FD5C16 - Input 6
00 FD5E16 - Input 7
Type: RO
4.14.6 Usage Hints
Voltage Level Burst
The total duration of the Voltage Level Burst measurement is a function of the system clock frequency (see Section 4.18 on
page 239) and the data sampling delay, selected by SMPDLY field in ACMTIM register. The values in Table 28 should only
be used to evaluate the maximum duration of the measurement. Actual duration may be shorter, depending on the input
level value. The software should use either EOMEV flag polling or the ACM interrupt, as described in Section 4.14.4 on
page 210.
Table 28. Voltage Level Burst Duration
Bit
76543210
Name
Reserved
VOLTLVL
Bit
Description
5-0
VOLTLVL (Voltage Level Data). Voltage level of the respective input i (KBSINi for i 0 through 7), while operating
in Voltage Level Burst mode (ACMMOD = 012 in ACMCNF register). The readout is an unsigned value with
1 LSB = VCC/64; the input voltage is calculated as: VIN = VOLTVL * (VCC/64).
7-6
Reserved.
System Clock Frequency
(MHz)
SMPDLY Setting
Maximum Burst Duration
(
µs)
4
000
176
10
010
140
20
101
118



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