633
frequency division ratio. The system clock generated by the frequency divider can be output at the
φ
pin.
20.5.1
Register Configuration
Table 20.4 summarizes the frequency division register.
Table 20.4
Frequency Division Register
Address
*
Name
Abbreviation
R/W
Initial Value
H'EE01B
Division control register
DIVCR
R/W
H'FC
Note:
*
Lower 20 bits of the address in advanced mode.
20.5.2
Division Control Register (DIVCR)
DIVCR is an 8-bit readable/writable register that selects the division ratio of the frequency
divider.
Bit
Initial value
Read/Write
7
—
1
—
6
—
1
—
5
—
1
—
4
—
1
—
3
—
1
—
0
DIV0
0
R/W
2
—
1
—
1
DIV1
0
R/W
Reserved bits
Divide bits 1 and 0
These bits select the
frequency division ratio
DIVCR is initialized to H'FC by a reset and in hardware standby mode. It is not initialized in
software standby mode.
Bits 7 to 2—Reserved: These bits cannot be modified and are always read as 1.
Bits 1 and 0—Divide (DIV1, DIV0): These bits select the frequency division ratio, as follows.
Bit 1
DIV1
Bit 0
DIV0
Frequency Division Ratio
0
0
1/1
(Initial value)
0
1
1/2
1
0
1/4
1
1
1/8
Содержание H8/3060
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Страница 729: ...681 H8 3062F ZTAT or H8 3062F ZTAT R mask version Ports 1 2 5 LED 600 Ω Figure 22 5 Sample LED Circuit ...
Страница 748: ...700 H8 3064F ZTAT B mask version Ports 1 2 5 LED 600 Ω Figure 22 8 Sample LED Circuit ...
Страница 777: ...729 H8 3062F ZTAT B mask version Ports 1 2 5 LED 600 Ω Figure 22 14 Sample LED Circuit ...
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Страница 994: ...946 ...