tmp89fm42l TOSHIBA Semiconductor CORPORATION, tmp89fm42l Datasheet - Page 155
tmp89fm42l
Manufacturer Part Number
tmp89fm42l
Description
8 Bit Microcontroller Tlcs-870/c1 Series
Manufacturer
TOSHIBA Semiconductor CORPORATION
Datasheet
1.TMP89FM42L.pdf
(428 pages)
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RA001
11.3
DVOCR<DVOCK> is output from DVO pin.
DVO pin outputs the "H" level.
at DVOCR<DVOCK>.
is cleared to "0", the frequency of the divider output is not the frequency set at DVOCR<DVOCK>.
the divider output frequency does not reach the expected value due to synchronization of the gear clock (fcgck) and
the low-frequency clock (fs).
Select the divider output frequency at DVOCR<DVOCK>.
The divider output is enabled by setting DVOCR<DVOEN> to "1". Then, The rectangular waves selected by
It is disabled by clearing DVOVR<DVOEN> to "0". And DVO pin keeps "H" level.
When the operation is changed to STOP or IDLE0/SLEEP0 mode, DVOCR<DVOEN> is cleared to "0" and the
The divider output source clock operates, regardless of the value of DVOCR<DVOEN>.
Therefore, the frequency of the first divider output after DVOCR<DVOEN> is set to "1" is not the frequency set
When the operation is changed to the software, STOP or IDLE0/SLEEP0 mode is activated and DVOCR<DVOEN>
When the operation is changed from NORMAL mode to SLOW mode or from SLOW mode to NORMAL mode,
Function
Example:0.977 kHz pulse output (fcgck = 4.0 MHz)
Table 11-1 Divider Output Frequency (Example: fcgck = 4.0 MHz, fs = 32.768 kHz)
LD
DVOCK
00
01
10
11
TBTCR<DVOEN>
DVO output
(DVOCR), 0y00000100
Figure 11-2 Divider Output Timing
DV9CK = 0
0.977 k
1.953 k
3.906 k
7.813 k
NORMAL 1/2, IDLE 1/2 mode
Divider output timing chart
Divider output frequency [Hz]
Page 141
DV9CK = 1
Reserved
1.024 k
2.048 k
4.096 k
;DVOCK ← "00", DVOEN ← "1"
SLOW1/2, SLEEP1
Reserved
1.024 k
2.048 k
4.096 k
mode
TMP89FM42L
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