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Clock Generator
(7)
Access
Address
Initial Value
Table 4-10
Bit position
Bit name
7
RSTS
1
HRSTOP
0
RSTOP
RCM - Internal oscillator mode register
The 8-bit RCM register specifies the operation and informs about the status of
the low-speed and high-speed internal oscillators.
This register can be read/written in 1-bit or 8-bit units.
FFFF F80C
.
H
80
. The register is initialized by any reset.
H
7
6
5
RSTS
0
0
R
R
R
RCM register contents
Oscillation stability status of 8 MHz internal oscillator:
0: 8 MHz internal oscillator stopped or waiting for oscillation stability.
1: 8 MHz internal oscillator operating.
Operation/stop of 8 MHz internal oscillator:
0: 8 MHz internal oscillator operating.
1: 8 MHz internal oscillator stopped.
Caution:
When the CPU clock source is the 8 MHz internal oscillator, do not set this
bit to 1.
Operation/stop of 240 KHz internal oscillator:
0: 240 KHz internal oscillator operating.
1: 240 KHz internal oscillator stopped.
Note: Setting this bit is ignored if bit RMOPIN of option byte 007A
Caution:
When the CPU clock source is the 240 KHz internal oscillator, do not set
this bit to 1.
User's Manual U18743EE1V2UM00
4
3
2
0
0
0
HRSTOP RSTOP
R
R
R
Function
Chapter 4
1
0
R/W
R/W
is set.
H
177
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