HD64F3687GHV Datasheet, PDF (417/566 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 19 Band-Gap Circuit, Power-On Reset, and Low-Voltage Detection Circuits
Initial
Bit
Bit Name Value R/W Description
1
LVDDE 0
R/W Voltage-Fall-Interrupt Enable
0: Interrupt on the power-supply voltage falling disabled
1: Interrupt on the power-supply voltage falling enabled
0
LVDUE 0
R/W Voltage-Rise-Interrupt Enable
0: Interrupt on the power-supply voltage rising disabled
1: Interrupt on the power-supply voltage rising enabled
Notes: 1. Not initialized by an LVDR but initialized by a power-on reset or a watchdog timer reset.
2. For 3.3-V-specification models, this bit 3 of this register is a reserved bit (initial value is
0) and the reset detection voltage is 2.3 V (typ.).
Table 19.1 LVDCR Settings and Select Functions
LVDCR Settings
VDDII
LVDSEL LVDDE LVDUE
*
1
0
0
*
0
1
0
*
0
1
1
Note: * Set these bits if necessary.
Power-On
Reset
√
√
√
Select Functions
LVDR
Low-Voltage- Low-Voltage-
Detection Fall Detection Rise
Interrupt
Interrupt
√


√
√

√
√
√
Rev. 3.00 Sep. 10, 2007 Page 383 of 528
REJ09B0216-0300