tmp19a43fzxbg TOSHIBA Semiconductor CORPORATION, tmp19a43fzxbg Datasheet - Page 348

• Manufacturer Part Number: tmp19a43fzxbg
• Description: 32bit Tx System Risc
• Manufacturer: TOSHIBA Semiconductor CORPORATION

RTCCR
(0xFFFF_F0A0) Read/Write
3.18 Timer for Real-Time Clock
3.18.1
(32.768 kHz)
fs
interrupts every 0.0625 s, 0.125 s, 0.25 s or 0.50 s.
addition, a real-time clock interrupt can be used to release the device from a standby mode (other than STOP
mode). When using a real-time clock interrupt (INTRTC), set the IMCGB3 register in the CG block
appropriately.
The TMP1942 contains a timer for real-time clock.
Using the 32.768-kHz low-frequency clock, the timer implements a time-keeping function by generating
The timer for real-time clock can operate in any mode in which low-frequency oscillation is enabled. In
Configuration
(RTCCR). Figure 3.18.2 shows the functions of this register.
Bit symbol
After Reset
Function
Figure 3.18.1 shows a block diagram of the timer for real-time clock.
The timer for real-time clock can be controlled using the timer for real-time clock control register
RTCCR <RTCRUN>
RTCCR <RTCSEL>
Figure 3.18.1 Block Diagram of Timer for Real-Time Clock
Figure 3.18.2 Timer for Real-Time Clock Control Register
Must
always be
set to 0.
⎯
⎯
7
0
⎯
⎯
⎯
6
RUN
TMP1942CY/CZ-347
/CLEAR
14-Stage Binary Counter
⎯
⎯
⎯
5
⎯
⎯
⎯
4
2
11
Selector
2
12
Clears
accumulator
1: Don't
RTCRCLR RTCSEL1
0: Clear
care
2
R/W
13
3
0
2
14
00: 2
01: 2
10: 2
11: 2
Accumulator
TMP1942CY/CZ
RTCREG
2
0
14
13
12
11
8-bit
/fs
/fs
/fs
/fs
R/W
Interrupt generation cycle
(fs = 32.768 kHz)
00
01
10
11
RTCSEL0
0.50 s
0.25 s
0.125 s
0.0625 s
1
0
Interrupt Request
INTRTC
0: Stop and
1: Count
RTCRUN
clear
R/W
0
0