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7906 Datasheet(PDF) 355 Page - Renesas Technology Corp

Part # 7906
Description  16-BIT SINGLE-CHIP MICROCOMPUTER
PDF  531 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

7906 Datasheet(HTML) 355 Page - Renesas Technology Corp

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POWER SAVING FUNCTIONS
7906 Group User’s Manual Rev.2.0
16-2
16.1 Overview
CHAPTER 15. STOP
AND WAIT MODES
CHAPTER 4. CLOCK
GENERATING CIRCUIT,
Section 15.3 Stop mode
CHAPTER 12. A-D CONVERTER
This chapter explains the functions to save the power consumption of the microcomputer and the total
system including the microcomputer.
16.1 Overview
Table 16.1.1 lists the overview of the power saving functions. Each of these functions saves the power
consumption of the total system. The registers related to the power saving functions are explained in the
following.
Table 16.1.1 Overview of power saving functions
Item
Inactivity of system clock in
wait mode
Stop of oscillation circuit
Pin VREF disconnection
In the wait mode, operating clocks for the internal peripheral
devices and fsys can be inactive.
When a stable clock externally generated is used, the drive
circuit for oscillation between pins XIN and XOUT can be stopped.
(The output level at pin XOUT is fixed to “H.”)
The VREF input can be disconnected when the A-D converter
is not used
Function
Reference



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