h8s-2158 Renesas Electronics Corporation., h8s-2158 Datasheet - Page 887

• Manufacturer Part Number: h8s-2158
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

29.3.1
Table 29.7 shows the clock timing. The clock timing specified here covers clock output ( ), clock
pulse generator (crystal) and external clock input (EXTAL pin) oscillation stabilization times. For
details of external clock input (EXTAL pin and EXCL pin) timing, see section 26, Clock Pulse
Generator.
Table 29.7 Clock Timing
Condition A: V
Condition B: V
The clock timing is shown below.
Item
Clock cycle time
Clock high pulse width
Clock low pulse width
Clock rise time
Clock fall time
Reset oscillation
stabilization (crystal)
Software standby
oscillation stabilization
time (crystal)
External clock output
stabilization delay time
Clock Timing
CC
CC
= 3.0 V to 3.6 V, V
= 2.7 V to 3.6 V, V
Symbol
t
t
t
t
t
t
t
t
cyc
CH
CL
Cr
Cf
OSC1
OSC2
DEXT
Figure 29.4 System Clock Timing
SS
SS
Min
40
15
15
—
—
10
8
500
= 0 V, = 5 MHz to 25 MHz
= 0 V, = 5 MHz to 20 MHz
Condition A
t
CH
Max
200
—
—
5
5
—
—
—
t
cyc
t
Cf
t
CL
Rev. 3.00 Jan 25, 2006 page 835 of 872
t
Cr
Min
50
20
20
—
—
10
8
500
Condition B
Section 29 Electrical Characteristics
Max
200
—
—
5
5
—
—
—
Unit
ns
ms
µs
REJ09B0286-0300
Reference
Figure 29.4
Figure 29.5
Figure 29.6
Figure 29.5