HD64F38024HV Datasheet, PDF (546/684 Pages) Renesas Technology Corp – Hardware Manual Renesas 8-Bit Single-Chip Microcomputer H8 Family/H8/300L Super Low Power Series

Section 16 Electrical Characteristics
Table 16. 32 Power Supply Voltage Detection Circuit Characteristics (5)
Using external reference voltage and detect voltage external input (VREFSEL = VINTDSEL =
VINTUSEL = 1)
Rated Values
Item
Symbol Min Typ Max
Unit Test Condition
Comparator detection Vcdl
accuracy
0.1 —
extD/extU pin input
voltage
VextD^* –0.3 —
VextU^*
—
VCC + 0.3 or
AVCC + 0.3,
whichever is
lower
V | VextU – Vref |
| VextD – Vref |
V VCC = 2.7 to 3.3 V
–0.3 —
3.6 or AVCC
V
+ 0.3, whichever
is lower
VCC = 3.3 to 5.5 V
Vref pin input voltage Vref5
0.8 —
2.8
V
Note: * The VextD voltage must always be greater than the VextU voltage.
VCC = 2.7 to 5.5 V
16.8.8 Power-On Reset Circuit Characteristics
Table 16.33 Power-On Reset Circuit Characteristics
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 Condition
RES pin pull-up
RRES
65
100
—
kΩ
resistance
Power-on reset start Vpor
—
—
100
mV
voltage
Note:
Make sure to drop the power supply voltage, VCC, to below Vpor = 100 mV and then raise it
after the RES pin load had thoroughly dissipated. To drain the load of the RES pin,
attaching a diode to the VCC side is recommended. The power-on reset function may not
work properly if the power supply voltage, VCC, is raised from a level exceeding 100 mV.
Rev. 8.00 Mar. 09, 2010 Page 524 of 658
REJ09B0042-0800