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TMP89FM42
RA001
11. Divider Output (
DVO
)
This function outputs approximately 50% duty pulses that can be used to drive the piezoelectric buzzer or other
device.
11.1 Configuration
Figure 11-1 Divider Output
11.2 Control
The divider output is controlled by the divider output control register (DVOCR).
Note 1: fcgck: Gear clock [Hz], fs: Low-frequency clock [Hz]
Note 2: DVOCR<DVOEN> is cleared to "0" when the operation is switched to STOP or IDLE0/SLEEP0 mode. DVOCR<DVOCK>
holds the value.
Note 3: When SYSCR1<DV9CK> is "1" in the NORMAL 1/2 or IDLE 1/2 mode, the DVO frequency is subject to some fluctuations
to synchronize fs and fcgck.
Note 4: Bits 7 to 3 of DVOCR are read as "0".
11.2.1 Function
Select the divider output frequency at DVOCR<DVOCK>.
Divider output control register
DVOCR
(0x0038)
7
6
5
4
3
2
1
0
Bit Symbol
-
-
-
-
-
DV0EN
DVOCK
Read/Write
R
R
R
R
R
R/W
R/W
After reset
0
0
0
0
0
0
0
0
DVOEN
Enables/disables
the divider output
0: Disable the divider output
1: Enable the divider output
DVOCK
Selects the divider output frequency
Unit: [Hz]
NORMAL 1/2, IDLE 1/2 mode
SLOW1/2
SLEEP1
mode
DV9CK=0
DV9CK=1
00
fcgck/2
12
fs/2
5
fs/2
5
01
fcgck/2
11
fs/2
4
fs/2
4
10
fcgck/2
10
fs/2
3
fs/2
3
11
fcgck/2
9
Reserved
Reserved
DVOCR
Selector
DVOEN
DVO pin
DVOCK
2
A
B
C Y
D
S
fcgck/2
12
or fs/2
5
fcgck/2
11
or fs/2
4
fcgck/2
10
or fs/2
3
fcgck/2
9
Содержание TLCS-870/C1 Series
Страница 1: ...8 Bit Microcontroller TLCS 870 C1 Series TMP89FM42 查询TMP89FM42供应商 捷多邦 专业PCB打样工厂 24小时加急出货 ...
Страница 3: ...Revision History Date Revision 2007 10 25 1 First Release 2007 11 3 2 Contents Revised ...
Страница 4: ......
Страница 14: ......
Страница 18: ...1 3 Block Diagram TMP89FM42 1 3 Block Diagram Figure 1 2 Block Diagram ...
Страница 22: ...1 4 Pin Names and Functions TMP89FM42 ...
Страница 60: ...2 CPU Core 2 5 Revision History TMP89FM42 ...
Страница 76: ...3 Interrupt Control Circuit 3 8 Revision History TMP89FM42 ...
Страница 86: ...4 External Interrupt control circuit 4 3 Function TMP89FM42 ...
Страница 102: ...7 Voltage Detection Circuit 7 5 Revision History TMP89FM42 ...
Страница 126: ...8 I O Ports 8 3 I O Port Registers TMP89FM42 Note 2 i 0 to 1 ...
Страница 136: ...8 I O Ports 8 5 Revision History TMP89FM42 ...
Страница 142: ...9 Special Function Registers 9 3 SFR3 0x0E40 to 0x0EFF TMP89FM42 ...
Страница 146: ...10 Low Power Consumption Function for Peripherals TMP89FM42 ...
Страница 149: ...TMP89FM42 11 3 Revision History Rev Description RA001 Deleted SLEEP2 description ...
Страница 150: ...11 Divider Output DVO 11 3 Revision History TMP89FM42 ...
Страница 220: ...15 Real Time Clock RTC 15 4 Real Time Clock Operation TMP89FM42 ...
Страница 250: ...16 Asynchronous Serial Interface UART 16 15 Revision History TMP89FM42 ...
Страница 302: ...18 Serial Bus Interface SBI 18 7 Revision History TMP89FM42 ...
Страница 336: ...21 Flash Memory 21 4 Toggle Bit D6 TMP89FM42 Note 1 Make sure that you set the C register to 0x00 LD FLSCR2 0xD5 ...
Страница 338: ...21 Flash Memory 21 4 Toggle Bit D6 TMP89FM42 ...
Страница 384: ...22 Serial PROM Mode 22 15 Revision History TMP89FM42 ...
Страница 388: ...24 Input Output Circuit 24 1 Control Pins TMP89FM42 ...
Страница 404: ...25 Electrical Characteristics 25 11 Revision History TMP89FM42 ...
Страница 406: ...26 Package Dimensions TMP89FM42 ...
Страница 408: ......