tmp89fm42a TOSHIBA Semiconductor CORPORATION, tmp89fm42a Datasheet - Page 236
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tmp89fm42a
Manufacturer Part Number
tmp89fm42a
Description
8 Bit Microcontroller
Manufacturer
TOSHIBA Semiconductor CORPORATION
Datasheet
1.TMP89FM42A.pdf
(431 pages)
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Part Number:
tmp89fm42aUG
Manufacturer:
TOSHIBA/东芝
Quantity:
20 000
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RA000
15. Real Time Clock (RTC)
15.1
15.2
Low power consumption register 2
POFFCR2
(32.768 kHz)
(0x0F76)
SLEEP0.
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
The real time clock is controlled by following resisters.
Configuration
Control
fs
SIO0EN
RTCEN
Read/Write
Bit Symbol
After reset
RTC control
SIO0 control
RTCCR
R/W
7
0
-
RTCRUN
RTCSEL
Figure 15-1 Real Time Clock
R/W
6
0
-
2
15
RTCEN
/fs 2
R/W
Binary counter
5
0
Page 217
14
/fs 2
0
1
0
1
Disable
Enable
Disable
Enable
13
/fs 2
R/W
Selector
4
0
-
12
/fs 2
11
/fs 2
R/W
3
0
-
10
/fs 2
9
/fs
2
R/W
8
2
0
/fs
-
R/W
INTRTC
interrupt request
1
0
-
TMP89FM42A
SIO0EN
R/W
0
0
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