Datasheet

R8C/2K Group, R8C/2L Group 5. Electrical Characteristics
Rev.1.10 Dec 21, 2007 Page 31 of 45
REJ03B0219-0110
NOTES:
1. V
CC = 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. V
CC = 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 V
CC = 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
V
CC = 2.7 V to 5.5 V
−20°C ≤ T
opr ≤ 85°C
(2)
39.2 40 40.8 MHz
V
CC = 2.7 V to 5.5 V
−40°C ≤ T
opr ≤ 85°C
(2)
39.0 40 41.0 MHz
V
CC = 2.2 V to 5.5 V
−20°C ≤ T
opr ≤ 85°C
(3)
35.2 40 44.8 MHz
V
CC = 2.2 V to 5.5 V
−40°C ≤ T
opr ≤ 85°C
(3)
34.0 40 46.0 MHz
High-speed on-chip oscillator frequency when
correction value in FRA7 register is written to
FRA1 register
(4)
VCC = 5.0 V, Topr = 25°C − 36.864 − MHz
V
CC = 2.7 V to 5.5 V
−20°C ≤ T
opr ≤ 85°C
−3% − 3% %
− Value in FRA1 register after reset 08h − F7h −
− Oscillation frequency adjustment unit of high-
speed on-chip oscillator
Adjust FRA1 register
(value after reset) to -1
− +0.3 − MHz
− Oscillation stability time V
CC = 5.0 V, Topr = 25°C − 10 100 µs
− Self power consumption at oscillation V
CC = 5.0 V, Topr = 25°C − 550 −µA
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 µs
− Self power consumption at oscillation V
CC = 5.0 V, Topr = 25°C − 15 −µA
Table 5.12 Power Supply Circuit Timing Characteristics
Symbol Parameter Condition
Standard
Unit
Min. Typ. Max.
t
d(P-R) Time for internal power supply stabilization during
power-on
(2)
1 − 2000 µs
t
d(R-S)
STOP exit time
(3)
−−150 µs