Datasheet

Section 26 Low-Voltage Detection Circuits
Page 862 of 982 REJ09B0465-0300 Rev. 3.00
Sep 17, 2010
H8S/20103, H8S/20203, H8S/20223, H8S/20115, H8S/20215, H8S/20235 Group
26.2.3 Low-Voltage Detection Circuit 2 Control Register L (LD2CRL)
Address:
Bit:
Value after reset:
b7
VD2E
0
b6
VD2CVS
0
b5
VD2RVS
0
b4
⎯
0
b3
⎯
0
b2
⎯
0
b1
⎯
0
b0
⎯
0
H'FF0623
Bit Symbol Bit Name Description R/W
7 VD2E LVD2 circuit
enable
0: The LVD2 circuit is not used. (In standby mode)
1: The LVD2 circuit is used.
R/W
6 VD2CVS LVD2 circuit
reference voltage
input select
0: VCC voltage is used as the reference voltage.
1: Externally input (PA7) voltage is used as the
reference voltage.*
R/W
5 VD2RVS LVD2 circuit
detection voltage
input select
0: Internally generated voltage is used as the
detection voltage.
1: Externally input (PA6) voltage is used as the
detection voltage.*
R/W
4 to 0 ⎯ Reserved These bits are read as 0. The write value should
be 0.
⎯
Notes: When an externally input voltage is used as the reference voltage or detection voltage, the
externally input voltage must not exceed ½ Vcc.
* This register is not initialized by an LVD2 reset and LVD1 reset.