Datasheet

R8C/3JC Group 5. Electrical Characteristics
REJ03B0302-0100 Rev.1.00 Page 36 of 54
May 25, 2010
Notes:
1. V
CC = 1.8 to 5.5 V, Topr = −20 to 85°C (N version), unless otherwise specified.
2. 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 = 1.8 to 5.5 V, Topr = −20 to 85°C (N version), unless otherwise specified.
Notes:
1. The measurement condition is V
CC = 1.8 to 5.5 V and Topr = 25°C.
2. Waiting time until the internal power supply generation circuit stabilizes during power-on.
Table 5.25 High-speed On-Chip Oscillator Circuit Electrical Characteristics
Symbol Parameter Condition
Standard
Unit
Min. Typ. Max.
− High-speed on-chip oscillator frequency after
reset
VCC = 1.8 V to 5.5 V
−20°C ≤ Topr ≤ 85°C
37.80 40 42.60 MHz
High-speed on-chip oscillator frequency when
the FRA4 register correction value is written into
the FRA1 register and the FRA5 register
correction value into the FRA3 register
(2)
VCC = 1.8 V to 5.5 V
−20°C ≤ Topr ≤ 85°C
34.836 36.864 39.261 MHz
High-speed on-chip oscillator frequency when
the FRA6 register correction value is written into
the FRA1 register and the FRA7 register
correction value into the FRA3 register
V
CC = 1.8 V to 5.5 V
−20°C ≤ Topr ≤ 85°C
30.24 32 34.08 MHz
− Oscillation stability time VCC = 5.0 V, Topr = 25°C − 0.5 3 ms
− Self power consumption at oscillation VCC = 5.0 V, Topr = 25°C − 400 −µA
Table 5.26 Low-speed On-Chip Oscillator Circuit Electrical Characteristics
Symbol Parameter Condition
Standard
Unit
Min. Typ. Max.
fOCO-S Low-speed on-chip oscillator frequency 60 125 250 kHz
− Oscillation stability time VCC = 5.0 V, Topr = 25°C − 30 100 µs
− Self power consumption at oscillation VCC = 5.0 V, Topr = 25°C − 2 −µA
Table 5.27 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)
−−2,000 µs