pc87591l-n05 National Semiconductor Corporation, pc87591l-n05 Datasheet - Page 198

• Manufacturer Part Number: pc87591l-n05
• Description: Lpc Mobile Embedded Controller
• Manufacturer: National Semiconductor Corporation

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4.0 Embedded Controller Modules
4.14.3 Voltage Level
V
(parts of FS), were V
The 6-bit Voltage Level Data field (VOLTLVL) in VOLDATn (n = 0 to 7) registers and the Comparison Threshold Data field
(THRSHD5-THRSHD0) in THRDAT register are converted to input voltage, according to input voltage ratio (to FS), as
shown in Figure 72.
CC
supply is the reference and full scale (FS) voltage for the D/A converter. This enables ratiometric voltage measurement
KBSIN0
KBSIN1
KBSIN7
CC
PC87591L-N05
ACM
is used to power an external voltage divider connected to the KBSINn inputs.
+
+
+
D/A Converter
Comparison
Figure 71. ACM Functional Diagram
(6-bit)
Result
(Continued)
198
Control/Status
Voltage In7
Voltage In0
Voltage In1
Control
Logic
System
Clock
LFCLK
T0IN
Interrupt
Peripheral Bus
Revision 1.2