HD64F38024HV Datasheet, PDF (543/684 Pages) Renesas Technology Corp – Hardware Manual Renesas 8-Bit Single-Chip Microcomputer H8 Family/H8/300L Super Low Power Series

Section 16 Electrical Characteristics
16.8.7 Power Supply Voltage Detection Circuit Characteristics
Table 16.28 Power Supply Voltage Detection Circuit Characteristics (1)
V_CC = 2.7 V to 5.5 V, AV_CC = 2.7 V to 5.5 V, V_SS = AV_SS = 0.0 V, unless otherwise specified
Rated Values
Item
Symbol Min
Typ
Max
Unit Test Conditions
LVDR operation drop
VLVDRmin
1.0
—
—
V
voltage^*
LVD stabilization time
TLVDON
150
—
Standby mode current
ISTBY
—
—
consumption
—
µs
100
µA LVDE = 1
VCC = 5.0 V
32 oscillator not
used
Note: * In some cases no reset may occur if the power supply voltage, VCC, drops below
VLVDRmin = 1.0 V and then rises, so thorough evaluation is called for.
Table 16. 29 Power Supply Voltage Detection Circuit Characteristics (2)
Using on-chip reference voltage and ladder resistor (VREFSEL = VINTDSEL = VINTUSEL = 0)
Rated Values
Item
Symbol Min
Typ
Max
Unit Test Conditions
Power supply drop
Vint(D)^*3 3.3
3.7
4.2
V
LVDSEL = 0
detection voltage
Power supply rise
detection voltage
Vint(U)^*3 3.6
4.0
4.5
V
LVDSEL = 0
Reset detection voltage Vreset1^*3 2.0
2.3
2.7
V
LVDSEL = 0
1^*1
Reset detection voltage Vreset2^*3 2.7
3.3
3.9
V
LVDSEL = 1
2^*2
Notes: 1. The above function should be used in conjunction with the voltage drop/rise detection
function.
2. Low-voltage detection reset should be selected for low-voltage detection reset only.
3. The values of Vint(D), Vint(U), Vreset1, and Vreset2 change relative to each other.
Example: If Vint(D) is the minimum value, Vint(U), Vreset1, and Vreset2 are also the
minimum values.
Rev. 8.00 Mar. 09, 2010 Page 521 of 658
REJ09B0042-0800