hd64338023s Renesas Electronics Corporation., hd64338023s Datasheet - Page 491

• Manufacturer Part Number: hd64338023s
• Description: Renesas 8-bit Single-chip Microcomputer Super Low Power Series
• Manufacturer: Renesas Electronics Corporation.

Resistance Value Calculation Table
Ex. No
1
2
3
4
4. Using an error calculation table like the one shown below, plug in values for R1, R2, R3, and
Error Calculation Table
Vref (V)
1.3
Vref to calculate the deviation of Vreset1, Vint(D), and Vint(U). Make sure to double check
the maximum and minimum values for each value.
Section 14 Power-On Reset and Low-Voltage Detection Circuits (H8/38124 Group Only)
R1
(kΩ Ω Ω Ω )
517
Vref (V)
1.30
1.41
1.57
2.09
R2
(kΩ Ω Ω Ω )
33
R (kΩ Ω Ω Ω )
1000
1000
1000
1000
R3
(kΩ Ω Ω Ω )
450
Vreset1
2.5
2.7
3
4
Resistance Value
Error (%)
5
R1+Err, R2/R3-Err
R1-Err, R2/R3+Err
R1/R2/R3 No Err
R1/R2+Err, R3-Err
R1/R2-Err, R3+Err
Vint(D)
2.7
2.9
3.2
4.5
Comparator
Error (V)
0.1
0
-0.1
0.1
0
-0.1
0.1
0
-0.1
0.1
0
-0.1
0.1
0
-0.1
Vint(U)
2.9
3
3.5
4.7
Rev. 7.00 Mar 10, 2005 page 449 of 652
R1 (kΩ Ω Ω Ω )
517
514
511
536
Vreset1
(V)
2.59
2.49
2.39
2.59
2.49
2.39
2.59
2.49
2.39
2.59
2.49
2.39
2.59
2.49
2.39
R2 (kΩ Ω Ω Ω )
33
16
42
20
REJ09B0042-0700
Vint(D)
(V)
2.94
2.84
2.74
2.66
2.56
2.46
2.79
2.69
2.59
2.93
2.83
2.73
2.67
2.57
2.47
R3 (kΩ Ω Ω Ω )
450
470
447
444
Vint(U)
(V)
3.15
3.05
2.95
2.85
2.75
2.65
2.99
2.89
2.79
3.16
3.06
2.96
2.84
2.74
2.64