LC866548/40/32/28/24A
Table 2. Crystal oscillation guaranteed constant (sub clock)
Oscillation type
Maker
EPSON
CITIZEN
Oscillator
C-002RX
CFS-308
CFS-206
C1
C2
Rf
Rd
32.768kHz crystal
oscillation
18pF
18pF
18pF
18pF
10MΩ
680kΩ
10M
330k
Ω
Ω
* Both C3 and C4 must use J rank (±5%) and CH characteristics.
(It is about the application which is not in need of high precision. Use K rank (±10%) and SL characteristics.)
(Notes) •Since the circuit pattern affects the oscillation frequency, place the oscillation-related parts as close to the oscillation
pins as possible with the shortest possible pattern length.
•If you use other oscillators herein, we provide no guarantee for the characteristics.
CF1
CF2
XT1
XT2
Rf
Rd
CF
X’tal
C1
C3
C4
C2
Figure 1 Ceramic oscillation circuit
Figure 2 Crystal oscillation circuit
No.6700-18/21