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MEC1322 Datasheet(PDF) 375 Page - Microchip Technology

Part # MEC1322
Description  Keyboard and Embedded Controller for Notebook PC
PDF  456 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MEC1322 Datasheet(HTML) 375 Page - Microchip Technology

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 2014 - 2015 Microchip Technology Inc.
DS00001719D-page 375
MEC1322
34.0 VBAT-POWERED RAM
34.1
Overview
The VBAT Powered RAM provides a 64 Byte Random Accessed Memory that is operational while the main power rail
is operational, and will retain its values powered by battery power while the main rail is unpowered.
34.2
References
No references have been cited for this feature.
34.3
Terminology
There is no terminology defined for this section.
34.4
Interface
This block is designed to be accessed externally via the pin interface and internally via a registered host interface.
34.5
Signal Description
There are no external signals for this block.
34.6
Host Interface
The registers defined for the Keyboard Scan Interface are accessible by the various hosts as indicated in Section 34.11,
"Registers".
34.7
Power, Clocks and Reset
This section defines the Power, Clock, and Reset parameters of the block.
FIGURE 34-1:
I/O DIAGRAM OF BLOCK
VBAT-Powered RAM
Interrupts
Power, Clocks and Reset
Host Interface
Signal Description



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