Hitachi H*/3694F-ZTAT User Manual

Rev. 1.0, 07/01, page 267 of 372

7

LVDE

0

R/W

LVD Enable

0: The low-voltage detection circuit is not used. (In standby

mode)

1: The low-voltage detection circuit is used.

6 to 4

−

1

−

Reserved

These bits are always read as 1, and cannot be modified.

3

LVDSEL

0

R/W

LVDI Detection Level Select

0: When the voltage falls below 3.6 V (typ.) or rises above 3.9 V

(typ.)

1: When the voltage falls below 3.2 V (typ.) or rises above 3.5 V

(typ.)

2

LVDRE

0

R/W

LVDR Enable

0: Disables the LVDR function

1: Enables the LVDR function

1

LVDDE

0

R/W

Voltage-Fall-Interrupt Enable

0: Interrupt on the power-supply voltage falling below the

selected detection level enabled

1: Interrupt on the power-supply voltage falling below the

selected detection level disabled

0

LVDUE

0

R/W

Voltage-Rise-Interrupt Enable

0: Interrupt on the power-supply voltage rising above the

selected detection level enabled

1: Interrupt on the power-supply voltage rising above the

selected detection level disabled