HD6473847RHV Datasheet, PDF (469/546 Pages) Renesas Technology Corp – Renesas 8-Bit Single-Chip Microcomputer H8 Family / H8/300L Super Low Power Series

Section 17 Electrical Characteristics
Table 17.26 Power Supply Voltage Detection Circuit Characteristics (5)
Using external reference voltage and detect voltage external input (VREFSEL = VINTDSEL =
VINTUSEL = 1)
Rated Values
Item
Symbol Test Condition Min Typ Max
Unit
Comparator detection Vcdl
| VextU – Vref | 0.1 —
—
V
accuracy
| VextD – Vref |
extD/extU pin input
VextD^* V_CC = 2.7 to 3.3 V –0.3 —
V_CC + 0.3 or
V
voltage
VextU^*
AV + 0.3,
CC
whichever is
lower
V_CC = 3.3 to 5.5 V –0.3 —
3.6 or AV_CC
V
+ 0.3, whichever
is lower
Vref pin input voltage Vref5
V_CC = 2.7 to 5.5 V 0.8
—
2.8
V
Note: * The VextD voltage must always be greater than the VextU voltage.
17.6.8 Power-On Reset Circuit Characteristics
Table 17.27 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 Test Condition Min
Typ
Max
Unit
RES pin pull-up
R_RES
resistance
65
100
—
k
Power-on reset start V
por
voltage
—
—
100
mV
Note:
Make sure to drop the power supply voltage, V_CC, 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 V_CC side is recommended. The power-on reset function may not
work properly if the power supply voltage, V_CC, is raised from a level exceeding 100 mV.
Rev. 7.00 Mar. 08, 2010 Page 437 of 510
REJ09B0024-0700