p2125vps20 Renesas Electronics Corporation., p2125vps20 Datasheet - Page 663

• Manufacturer Part Number: p2125vps20
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

24.3.1
Table 24.5 shows the clock timing. The clock timing specified here covers clock output (φ) and
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 21,
Clock Pulse Generator.
Table 24.5 Clock Timing
Condition A:
Condition B:
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
V
V
CC
CC
= 3.0 V to 3.6 V, V
= 3.0 V to 3.6 V, V
φ
Symbol Min.
t
t
t
t
t
t
t
t
cyc
CH
CL
Cr
Cf
OSC1
OSC2
DEXT
Figure 24.4 System Clock Timing
100
30
30


20
8
500
SS
SS
= 0 V, φ = 8 MHz to 10 MHz
= 0 V, φ = 8 MHz to 20 MHz
Condition A
t
CH
Max.
125


20
20



t
cyc
t
Cf
t
CL
Min.
50
20
20


20
8
500
t
Cr
Condition B
Rev. 1.00 Sep. 21, 2006 Page 625 of 658
Section 24 Electrical Characteristics
Max.
125


5
5



Unit
ns
ms
µs
REJ09B0310-0100
Reference
Figure 24.4
Figure 24.5
Figure 24.6
Figure 24.5