LC866548 Datasheet, PDF (18/21 Pages) Sanyo Semicon Device – 8-Bit Single Chip Microcontroller

Oscillation type
32.768kHz crystal
oscillation
LC866548/40/32/28/24A
Table 2. Crystal oscillation guaranteed constant (sub clock)
Maker
Oscillator
C1
C2
Rf
EPSON
C-002RX
18pF
18pF
10MΩ
CITIZEN
CFS-308
18pF
18pF
10MΩ
CFS-206
Rd
680kΩ
330kΩ
* 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
CF
C1
C2
Figure 1 Ceramic oscillation circuit
XT1
C3
XT2
Rf
Rd
X’tal
C4
Figure 2 Crystal oscillation circuit
No.6700-18/21