upd70f3402 Renesas Electronics Corporation., upd70f3402 Datasheet - Page 802

• Manufacturer Part Number: upd70f3402
• Description: 32-/16-bit Single-chip Microcontroller With Can Interface
• Manufacturer: Renesas Electronics Corporation.

27.5 Oscillator Characteristics
27.5.1 General condition
27.5.2 Oscillator timing and recommended oscillator connection
Notes: 1. The on-chip oscillator starts its operation after the operating voltage is supplied to the sys-
Cautions: 1. Connect the oscillator as close to the X1 and X2 pins as possible.
802
Oscillation frequency
Oscillation stabilization
time
-40°C
-40°C
V
4.0 V
SS0
Figure 27-1: Recommended Oscillator Connection (Ceramic or Crystal Resonator)
Parameter
2. The timing depends on the setting of the oscillation stabilization time (OSTS register).
=V
≤
≤
≤
tem independent of the state of the RESET signal. After release of the RESET signal, the
system applies a delay of 2
ensure proper and stable oscillation of an external resonator, the user needs to adjust the
active period of the RESET signal after applying the operating voltage to meet the stabiliza-
tion timing of the external resonator. Please contact the resonator manufacturer for details.
2. Don’t write any other signal lines in the area indicated by broken lines.
3. For the resonator selection and oscillator constant, customers are required to
V
SS1
T
T
DD0
A
A
either evaluate the oscillation themselves or apply to the resonator manufacturer
for evaluation.
≤
≤
=AV
+110°C (µPD70F3402)
+85°C (µPD70F3403, µPD70F3403A)
≤
V
SS
DD1
=BV
≤
Symbol
SS
5.5 V
T
OST
f
X
=0 V
Chapter 27 Electrical Specification
User’s Manual U16702EE3V2UD00
Condition
13
/fx before starting its operation. If this delay is not sufficient to
X1
C1
After STOP mode
After RESET
X2
C2
MIN.
0.5
4
-
Note 1
Note 2
TYP.
-
MAX.
8
-
-
MHz
Unit
ms
ms