Renesas RL78/G1P Hardware User Manual page 741

RL78/G1P
27.2 Oscillator Characteristics
27.2.1 X1 oscillator characteristics
= 40 to +85C, 2.7 V  V
(T
A
Parameter
X1 clock oscillation Ceramic resonator/
frequency (f ) Note crystal resonator
X
Note Indicates only oscillator characteristics. See 27.4 AC Characteristics for instruction execution time.
Request evaluation by the manufacturer of the oscillator circuit mounted on a board to check the oscillator
characteristics.
Caution Since the CPU is started by the high-speed on-chip oscillator clock after a reset release, check the X1
clock oscillation stabilization time using the oscillation stabilization time counter status register (OSTC)
by the user.
stabilization time select register (OSTS) after sufficiently evaluating the oscillation stabilization time
with the resonator to be used.
Remark When using the X1 oscillator, refer to 5.4 System Clock Oscillator.
27.2.2 On-chip oscillator characteristics
= 40 to +85C, 2.7 V  V
(T
A
Oscillators
High-speed on-chip oscillator
Notes 1, 2
clock frequency
High-speed on-chip oscillator
clock frequency accuracy
Low-speed on-chip oscillator
clock frequency Note 2
Low-speed on-chip oscillator
clock frequency accuracy
Notes 1. High-speed on-chip oscillator frequency is selected by bits 0 to 3 of option byte (000C2H) and bits 0 to 2 of
HOCODIV register.
2. This indicates the oscillator characteristics only. See 27.4 AC Characteristics for instruction execution time.
R01UH0895EJ0100 Rev.1.00
Nov 29, 2019
 3.6 V, V
= 0 V)
DD SS
Resonator
2.7 V  V
Determine the oscillation stabilization time of the OSTC register and the oscillation
 3.6 V, V
= 0 V)
DD SS
Parameters
f 32 MHz selected
IH
24 MHz selected
-20 to +85°C
-40 to -20°C
f
IL
CHAPTER 27 ELECTRICAL SPECIFICATIONS
Conditions MIN.
 3.6 V
1.0
DD
Conditions
2.7 V ≤ V ≤ 3.6 V
DD
2.7 V ≤ V ≤ 3.6 V
DD
TYP. MAX. Unit
20.0 MHz
MIN. TYP. MAX.
1 32
1 24
-1.0 +1.0
-1.5 +1.5
15
-15 +15
Unit
MHz
MHz
%
%
kHz
%
722