LC8766C8A Datasheet, PDF (20/23 Pages) Sanyo Semicon Device – 8-Bit Single Chip Microcontroller

LC8766C8A/B2A/96A
Main system clock oscillation circuit characteristics
The characteristics in the table bellow is based on the following conditions:
1. Use the standard evaluation board SANYO has provided.
2. Use the peripheral parts with indicated value externally.
3. The peripheral parts value is a recommended value of oscillator manufacturer
Frequency
10MHz
Table 1. Main system clock oscillation circuit characteristics using ceramic resonator
Manufacturer
Oscillator
Circuit parameters
C1 C2 Rd1
Operating
supply
voltage
range
Oscillation
stabilizing time
typ max
Notes
Murata
CST10.0MTW (30pF) (30pF) 0Ω 4.5 to 6.0V 0.06ms 0.2ms Built in C1, C2
4MHz
Murata CSTS0400MG03 (15pF) (15pF) 680Ω 4.5 to 6.0V 0.03ms 0.15ms Built in C1, C2
The oscillation stabilizing time is a period until the oscillation becomes stable after VDD becomes higher than minimum operating voltage. (Refer to Figure4)
Subsystem clock oscillation circuit characteristics
The characteristics in the table bellow is based on the following conditions:
1. Use the standard evaluation board SANYO has provided.
2. Use the peripheral parts with indicated value externally.
3. The peripheral parts value is a recommended value of oscillator manufacturer
Table 2. Subsystem clock oscillation circuit characteristics using crystal oscillator
Frequency Manufacturer Oscillator
Circuit parameters
Operating
Oscillation
supply voltage stabilizing time Notes
C3 C4 Rf Rd2
range
typ
max
32.768kHz Seiko EPSON MC-306 18pF 18pF 10MΩ 750kΩ 4.5 to 6.0V
1.3S 3.0S
C-002RX
The oscillation stabilizing time is a period until the oscillation becomes stable after executing the instruction which starts the
sub-clock oscillation or after releasing the HOLD mode. (Refer to Figure4)
(Notes) • Since the circuit pattern affects the oscillation frequency, place the oscillation-related parts as close tothe oscillation
pins as possible with the shortest possible pattern length.
CF1
CF2
Rd1
C1
CF
C2
Figure 1 Ceramic oscillation circuit
XT1
C3
Rf
X’tal
XT2
Rd2
C4
Figure 2 Crystal oscillation circuit
No.6718-20/23