Oscillation Circuit; Crystal Oscillation Circuit - Epson E0C6001 Technical Manual

E0C6001 TECHNICAL HARDWARE
Crystal oscillation
circuit
Fig. 4.2.1

Crystal oscillation circuit

I-18
4.2

Oscillation Circuit

The E0C6001 Series have a built-in crystal oscillation
circuit. This circuit generates the operating clock for the
CPU and peripheral circuit on connection to an external
crystal oscillator (typ. 32.768 kHz) and trimmer capacitor
(5–25 pF).
Figure 4.2.1 is the block diagram of the crystal oscillation
circuit.
V
DD
C
G
As Figure 4.2.1 indicates, the crystal oscillation circuit can
be configured simply by connecting the crystal oscillator
(X'tal) between the OSC1 and OSC2 pins and the trimmer
capacitor (C
G
Note The OSC1 and OSC2 terminals on the board should be shielded
with the V (+ side) .
DD
OSC1
OSC2
The E0C6001 Series
) between the OSC1 and V
To CPU and
peripheral circuits
V
DD
C
D
pins.
DD