R8C/28 Group, R8C/29 Group
5. Electrical Characteristics
Rev.2.10
Sep 26, 2008
REJ03B0169-0210
NOTES:
1. VCC = 2.2 to 5.5 V, Topr = -20 to 85
°C (N version) / -40 to 85°C (D version), unless otherwise specified.
2. These standard values show when the FRA1 register value after reset is assumed.
3. These standard values show when the corrected value of the FRA6 register is written to the FRA1 register.
4. This enables the setting errors of bit rates such as 9600 bps and 38400 bps to be 0% when the serial interface is used in
UART mode.
NOTE:
1. VCC = 2.2 to 5.5 V, Topr = -20 to 85
°C (N version) / -40 to 85°C (D version), unless otherwise specified.
NOTES:
1. The measurement condition is VCC = 2.2 to 5.5 V and Topr = 25
°C.
2. Waiting time until the internal power supply generation circuit stabilizes during power-on.
3. Time until system clock supply starts after the interrupt is acknowledged to exit stop mode.
Table 5.10
High-speed On-Chip Oscillator Circuit Electrical Characteristics
Symbol
Parameter
Condition
Standard
Unit
Min.
Typ.
Max.
fOCO40M
High-speed on-chip oscillator frequency
temperature supply voltage dependence
VCC = 4.75 to 5.25 V
0
39.2
40
40.8
MHz
VCC = 3.0 to 5.5 V
-20
38.8
40
41.2
MHz
VCC = 3.0 to 5.5 V
-40
38.4
40
41.6
MHz
VCC = 2.7 to 5.5 V
-20
38
40
42
MHz
VCC = 2.7 to 5.5 V
-40
37.6
40
42.4
MHz
VCC = 2.2 to 5.5 V
-20
35.2
40
44.8
MHz
VCC = 2.2 to 5.5 V
-40
34
40
46
MHz
VCC = 5.0 V ± 10%
-20
38.8
40
40.8
MHz
VCC = 5.0 V ± 10%
-40
38.4
40
40.8
MHz
High-speed on-chip oscillator frequency when
correction value in FRA7 register is written to
VCC = 5.0 V, Topr = 25
°C
36.864
MHz
VCC = 3.0 to 5.5 V
-20
°C ≤ Topr ≤ 85°C
-3%
3%
%
Value in FRA1 register after reset
Oscillation frequency adjustment unit of high-
speed on-chip oscillator
Adjust FRA1 register
(value after reset) to -1
+0.3
MHz
Oscillation stability time
10
100
s
Self power consumption at oscillation
VCC = 5.0 V, Topr = 25
°C
400
A
Table 5.11
Low-speed On-Chip Oscillator Circuit Electrical Characteristics
Symbol
Parameter
Condition
Standard
Unit
Min.
Typ.
Max.
fOCO-S
Low-speed on-chip oscillator frequency
30
125
250
kHz
Oscillation stability time
10
100
s
Self power consumption at oscillation
VCC = 5.0 V, Topr = 25
°C
15
A
Table 5.12
Power Supply Circuit Timing Characteristics
Symbol
Parameter
Condition
Standard
Unit
Min.
Typ.
Max.
td(P-R)
Time for internal power supply stabilization during
1
2000
s
td(R-S)
150
s