H8S-2350 RENESAS [Renesas Technology Corp], H8S-2350 Datasheet - Page 713

• Manufacturer Part Number: H8S-2350
• Description: 16-Bit Single-Chip Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

Bits 2 to 0—System Clock Select 2 to 0 (SCK2 to SCK0): These bits select the clock for the bus
master.
19.3
Clock pulses can be supplied by connecting a crystal resonator, or by input of an external clock.
19.3.1
Circuit Configuration
A crystal resonator can be connected as shown in the example in figure 19.2. Select the damping
resistance R
Table 19.2 Damping Resistance Value
Bit 2
SCK2
0
1
Frequency (MHz)
R
d
( )
Bit 1
SCK1
0
1
0
1
Oscillator
Connecting a Crystal Resonator
d
according to table 19.2. An AT-cut parallel-resonance crystal should be used.
Figure 19.2 Connection of Crystal Resonator (Example)
Bit 0
SCK0
0
1
0
1
0
1
—
EXTAL
XTAL
Description
Bus master is in high-speed mode
Medium-speed clock is /2
Medium-speed clock is /4
Medium-speed clock is /8
Medium-speed clock is /16
Medium-speed clock is /32
—
2
1k
R
d
4
500
C
C
L1
L2
8
200
Rev. 3.00 Sep 15, 2006 page 679 of 988
C
L1
= C
Section 19 Clock Pulse Generator
12
0
L2
= 10 to 22pF
16
0
REJ09B0330-0300
(Initial value)
20
0