Table of Contents
Advertisement
(1) Elimination of digital noise on RESET pin
For the RESET pin of the V850ES/KE1+, an analog/digital + analog noise eliminator can be selected.
The digital noise eliminator is selected when the RNZC.RNZSEL bit = 1. The digital noise is sampled using
the main clock (f
), and the number of samplings can be selected from 10 or 20 by the RNZC.SMPSEL bit.
X
(a) Reset noise elimination control register (RNZC)
The RNZC register can be read or written in 8-bit units.
Reset sets this register to 00H.
After
reset: 00H
RNZC
0
SMPSEL
0
1
RNZSEL
0
1
Note If the sampling clock is stopped, only the analog noise is eliminated automatically, regardless of the
setting of the RNZSEL bit.
Caution The RNZC register can be set (written) only once after the reset signal is released. Even if the
register is written two or more times, the first value written to it is not updated. To change the
set value of the register, input the reset signal.
CHAPTER 20 RESET FUNCTION
R/W
Address: FFFFF860H
0
0
0
Selection of number of samplings
20 times
10 times
Note
Selection of noise eliminator of RESET pin
Analog noise elimination only
Digital + analog noise elimination
User's Manual U16896EJ2V0UD
0
0
SMPSEL RNZSEL
Note
593
Advertisement
Table of Contents
