UPD78F9418AGK-9EU Renesas Electronics America, UPD78F9418AGK-9EU Datasheet - Page 94
UPD78F9418AGK-9EU
Manufacturer Part Number
UPD78F9418AGK-9EU
Description
Manufacturer
Renesas Electronics America
Datasheet
1.UPD78F9418AGK-9EU.pdf
(322 pages)
Specifications of UPD78F9418AGK-9EU
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92
SCKM
(2)
Note The feedback resistor is necessary to adjust the bias point of the oscillation waveform to close to the mid
Cautions 1. Bits 2 to 7 must be fixed to 0.
Symbol
Suboscillation mode register (SCKM)
SCKM selects whether a feedback resistor is used for the subsystem clock, and controls the oscillation of the
clock.
SCKM is set using a 1-bit or 8-bit memory manipulation instruction.
RESET input sets SCKM to 00H.
point of the supply voltage. Only when the subclock is not used, the power consumption in STOP mode
can be further reduced by setting FRC = 1.
SCC
FRC
7
0
0
1
0
1
2. Do not set the SCC bit when an external clock pulse is input, because the XT2 pin is pulled
up to V
On-chip feedback resistor used
On-chip feedback resistor not used
Operation enabled
Operation disabled
6
0
DD0
5
0
or V
Figure 5-3. Format of Suboscillation Mode Register
4
0
DD1
.
3
0
CHAPTER 5 CLOCK GENERATOR
2
0
Control of subsystem clock oscillator operation
User’s Manual U13952EJ3V1UD
FRC
1
Feedback resistor selection
SCC
0
Address
FFF0H
Note
After reset
00H
R/W
R/W
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