Page 203
TMP89FM42
RA000
15. Real Time Clock (RTC)
The real time clock is a function that generates interrupt requests at certain intervals using the low-frequency
clock.
The number of interrupts is counted by the software to realize the clock function.
The real time clock can be used only in the operation modes where the low-frequency clock oscillates, except for
SLEEP0.
15.1 Configuration
Figure 15-1 Real Time Clock
15.2 Control
The real time clock is controlled by following resisters.
Low power consumption register 2
POFFCR2
7
6
5
4
3
2
1
0
(0x0F76)
Bit Symbol
-
-
RTCEN
-
-
-
-
SIO0EN
Read/Write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
After reset
0
0
0
0
0
0
0
0
RTCEN
RTC control
0
1
Disable
Enable
SIO0EN
SIO0 control
0
1
Disable
Enable
Real time clock control register
RTCCR
(0x0FC8)
7
6
5
4
3
2
1
0
Bit Symbol
-
-
-
-
RTCSEL
RTCRUN
Read/Write
R
R
R
R
R/W
R/W
After reset
0
0
0
0
0
0
0
0
RTCSEL
RTCRUN
INTRTC
interrupt request
fs
(32.768 kHz)
RTCCR
Selector
Binary counter
2
15
/fs
2
14
/fs
2
13
/fs
2
12
/fs
2
11
/fs
2
10
/fs
2
9
/fs
2
8
/fs
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: ......