Datasheet

V850ES/JG3-H, V850ES/JH3-H CHAPTER 12 REAL-TIME COUNTER
R01UH0042EJ0500 Rev.5.00 Page 643 of 1513
Aug 12, 2011
(4) Real-time counter control register 3 (RC1CC3)
The RC1CC3 register is an 8-bit register that controls the interval interrupt function and RTCDIV pin.
This register can be read or written in 8-bit or 1-bit units.
Reset sets this register to 00H.
RINTE
Does not generate interval interrupt.
Generates interval interrupt.
RINTE
0
1
Interval interrupt (INTRTC2) control
RC1CC3 CLOE2 CKDIV 0 0
ICT2
ICT1 ICT0
654321
Disables RTCDIV pin output.
Enables RTCDIV pin output.
CLOE2
0
1
RTCDIV pin output control
Outputs 512 Hz (1.95 ms) from RTCDIV pin.
Outputs 16.384 kHz (0.061 ms) from RTCDIV pin.
CKDIV
0
1
RTCDIV pin output frequency selection
07
After reset: 00H R/W Address: FFFFFAE0H
2
6
/fXT (1.953125 ms)
2
7
/fXT (3.90625 ms)
2
8
/fXT (7.8125 ms)
2
9
/fXT (15.625 ms)
2
10
/fXT (31.25 ms)
2
11
/fXT (62.5 ms)
2
12
/fXT (125 ms)
ICT2
0
0
0
0
1
1
1
Interval interrupt (INTRTC2) selection
ICT1
0
0
1
1
0
0
1
ICT0
0
1
0
1
0
1
×
Cautions 1. See 12.4.7 Changing INTRTC2 interrupt setting during the real-time counter operation
when rewriting the RINTE bit during real-time counter operation (RC1PWR bit = 1).
2. The RTCDIV output operates as follows when the CLOE2 bit setting is changed.
• When changed from 0 to 1: A pulse set by the CKDIV bit is output after two clocks (2 x
32.768 kHz) or less.
• When changed from 1 to 0: Output of the RTCDIV output is stopped after two clocks (2
x 32.768 kHz) or less (fixed to low level).
3. See 12.4.7 Changing INTRTC2 interrupt setting during the real-time counter operation
when rewriting the ICT2 to ICT0 bits while the real-time counter operates (RC1PWR bit =
1).