Datasheet

R01DS0011EJ0101 Rev.1.01 Page 61 of 102
Oct 28, 2011
R8C/LA3A Group, R8C/LA5A Group, R8C/LA6A Group, R8C/LA8A Group 5. Electrical Characteristics
Note:
1. 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. Waiting time until the internal power supply generation circuit stabilizes during power-on.
Table 5.13 High-speed On-Chip Oscillator Circuit Characteristics
(V
CC = 1.8 to 5.5 V and Topr = −20 to 85 °C (N version)/ −40 to 85 °C (D version), unless
otherwise specified.)
Symbol Parameter Condition
Standard
Unit
Min. Typ. Max.
– High-speed on-chip oscillator frequency after
reset
V
CC = 1.8 V to 5.5 V
− 20 °C ≤ Topr ≤ 85 °C
19.2 20 20.8 MHz
V
CC = 1.8 V to 5.5 V
− 40 °C ≤ Topr ≤ 85 °C
19.0 20 21.0 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
(1)
VCC = 1.8 V to 5.5 V
− 20 °C ≤ Topr ≤ 85 °C
17.694 18.432 19.169 MHz
V
CC = 1.8 V to 5.5 V
− 40 °C ≤ Topr ≤ 85 °C
17.510 18.432 19.353 MHz
– Oscillation stability time – 5 30
µs
– Self power consumption at oscillation V
CC = 5.0 V, Topr = 25 °C – 530 – µA
Table 5.14 Low-speed On-Chip Oscillator Circuit Characteristics
(V
CC = 1.8 to 5.5 V and Topr = −20 to 85 °C (N version)/ −40 to 85 °C (D version), unless
otherwise specified.)
Symbol Parameter Condition
Standard
Unit
Min. Typ. Max.
fOCO-S Low-speed on-chip oscillator frequency 60 125 250 kHz
– Oscillation stability time – – 35
µs
– Self power consumption at oscillation V
CC = 5.0 V, Topr = 25°C– 2 –µA
fOCO-WDT Low-speed on-chip oscillator frequency for the
watchdog timer
60 125 250 kHz
– Oscillation stability time – – 35
µs
– Self power consumption at oscillation V
CC = 5.0 V, Topr = 25°C– 2 –µA
Table 5.15 Power Supply Circuit Characteristics
(V
CC = 1.8 to 5.5 V, VSS = 0 V, and Topr = 25 °C, unless otherwise specified.)
Symbol Parameter Condition
Standard
Unit
Min. Typ. Max.
t
d(P-R) Time for internal power supply stabilization during
power-on
(1)
– – 2000 µs