Renesas rl78 User Manual
RL78/G1A
CHAPTER 30 ELECTRICAL SPECIFICATIONS (G: INDUSTRIAL APPLICATIONS T
A
=
−40 to +105°C)
R01UH0305EJ0200 Rev.2.00
949
Jul 04, 2013
30.6.4 LVD circuit characteristics
LVD Detection Voltage of Reset Mode and Interrupt Mode
(T
A
=
−40 to +105°C, V
PDR
≤ V
DD
≤ 3.6 V, V
SS
= 0 V)
Parameter Symbol Conditions
MIN.
TYP.
MAX.
Unit
Power supply rise time
3.01
3.13
3.25
V
V
LVD2
Power supply fall time
2.94
3.06
3.18
V
Power supply rise time
2.90
3.02
3.14
V
V
LVD3
Power supply fall time
2.85
2.96
3.07
V
Power supply rise time
2.81
2.92
3.03
V
V
LVD4
Power supply fall time
2.75
2.86
2.97
V
Power supply rise time
2.70
2.81
2.92
V
V
LVD5
Power supply fall time
2.64
2.75
2.86
V
Power supply rise time
2.61
2.71
2.81
V
V
LVD6
Power supply fall time
2.55
2.65
2.75
V
Power supply rise time
2.51
2.61
2.71
V
Detection
voltage
Supply voltage level
V
LVD7
Power supply fall time
2.45
2.55
2.65
V
Minimum pulse width
t
LW
300
μs
Detection delay time
300
μs
Remark V
LVD (n
−1)
> V
LVDn
: n = 3 to 7
LVD Detection Voltage of Interrupt & Reset Mode
(T
A
=
−40 to +105°C, V
PDR
≤ V
DD
≤ 3.6 V, V
SS
= 0 V)
Parameter Symbol
Conditions
MIN.
TYP.
MAX.
Unit
V
LVD5
VPOC2, VPOC1, VPOC0 = 0, 1, 1, falling reset voltage
2.64
2.75
2.86
V
Rising release reset voltage
2.81
2.92
3.03
V
V
LVD4
LVIS1, LVIS0 = 1, 0
Falling interrupt voltage
2.75
2.86
2.97
V
Rising release reset voltage
2.90
3.02
3.14
V
Interrupt & reset
mode
V
LVD3
LVIS1, LVIS0 = 0, 1
Falling interrupt voltage
2.85
2.96
3.07
V
Caution Set the detection voltage (V
LVD
) to be within the operating voltage range. The operating voltage range
depends on the setting of the user option byte (000C2H/010C2H). The following shows the operating
voltage range.
HS (high-speed main) mode: V
DD
= 2.7 to 3.6 V@1 MHz to 32 MHz
V
DD
= 2.4 to 3.6 V@1 MHz to 16 MHz
30.6.5 Supply voltage rise slope characteristics
(T
A
=
−40 to +105°C, V
SS
= 0 V)
Parameter Symbol
Conditions
MIN.
TYP.
MAX.
Unit
Supply voltage rise
SV
DD
54 V/ms
Caution Be sure to maintain the internal reset state until V
DD
reaches the operating voltage range specified in
30.4 AC Characteristics, by using the LVD circuit or external reset pin.