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7733 데이터시트(PDF) 460 Page - Renesas Technology Corp

부품명 7733
상세설명  16-BIT SINGLE-CHIP MICROCOMPUTER
PDF  940 Pages
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제조업체  RENESAS [Renesas Technology Corp]
홈페이지  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

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APPLICATIONS
7733 Group User’s Manual
17–52
Fig. 17.4.6 Approximate flowchart (2)
Notes 1: When pin VREF and resistor ladder network are connected, current flows into the resistor
ladder network.
When using the A-D converter after the wait mode is terminated, do as follows:
q Reconnect pin VREF and resistor ladder network.
And then, start A-D conversion after a period of 1 s or more passed.
2: When a port is connected to an external device and so on, there is a possibility that current
consumption increases according to the port’s level.
In order to avoid this problem, do as follows:
•When output mode is selected: Fix the port’s level to a level where no current flows into
the external.
•When input mode is selected: Pull the port high or low via a resistor. (Floating state is
disabled.)
3: Do not switch the system clock until oscillation of a clock which is input from the external
is stabilized.
Timer B2 interrupt routine
Register save processing
Clock count
Register return processing
RTI
INT0
interrupt routine
Register save processing
[F_WIT]
“0”
Register return processing
RTI
[F_WIT]: Flag used to determine whether an INT0 interrupt request
has occurred or not
17.4 Power saving
w



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