upd78f0148m1gka1-9eu Renesas Electronics Corporation., upd78f0148m1gka1-9eu Datasheet - Page 474

• Manufacturer Part Number: upd78f0148m1gka1-9eu
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

(2) Low-voltage detection level selection register (LVIS)
474
Address: FFBFH
Symbol
This register selects the low-voltage detection level.
This register can be set by an 8-bit memory manipulation instruction.
RESET input clears LVIS to 00H.
LVIS
Notes 1. When the detection voltage of the POC circuit is specified as V
Caution Be sure to clear bits 3 to 7 to 0.
LVIS2
Figure 25-3. Format of Low-Voltage Detection Level Selection Register (LVIS)
7
0
0
0
0
0
1
1
1
1
2. Settable only for the expanded-specification/conventional products of the standard products
3. When the detection voltage of the POC circuit is specified as V
4. Settable only for expanded-specification products of the standard products and (A) grade
After reset: 00H
option, do not select V
selected, the POC circuit has priority.
and (A) grade products.
mask option, do not select V
POC circuit has priority.
products.
LVIS1
6
0
0
0
1
1
0
0
1
1
CHAPTER 25 LOW-VOLTAGE DETECTOR
LVIS0
R/W
5
0
0
1
0
1
0
1
0
1
User’s Manual U15947EJ3V1UD
LVI4
V
V
V
V
V
V
V
V
LVI0
LVI1
LVI2
LVI3
LVI4
LVI5
LVI6
LVI7
to V
4
0
(4.3 V ±0.2 V)
(4.1 V ±0.2 V)
(3.9 V ±0.2 V)
(3.7 V ±0.2 V)
(3.5 V ±0.2 V)
(3.3 V ±0.15 V)
(3.1 V ±0.15 V)
(2.85 V ±0.15 V)
LVI7
LVI7
as the LVI detection voltage. Even if V
as the LVI detection voltage. Even if V
3
0
Note 1
Notes 1, 2
Notes 1, 2
Notes 1, 3, 4
Detection level
LVIS2
2
LVIS1
1
POC
POC
= 3.5 V ±0.2 V by a mask
= 2.85 V ±0.15 V by a
LVIS0
LVI7
0
LVI4
is selected, the
to V
LVI7
are