h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 773

• Manufacturer Part Number: h8s-2138
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

(1) Clock Timing
Table 25.6 shows the clock timing. The clock timing specified here covers clock ( ) output and
clock pulse generator (crystal) and external clock input (EXTAL pin) oscillation settling times.
For details of external clock input (EXTAL pin and EXCL pin) timing, see section 23, Clock
Pulse Generator.
Table 25.6 Clock Timing
Condition A: V
Condition B: V
Condition C: V
Item
Clock cycle time
Clock high pulse
width
Clock low pulse
width
Clock rise time
Clock fall time
Oscillation settling
time at reset
(crystal)
Oscillation settling
time in software
standby (crystal)
External clock
output stabilization
delay time
T
T
T
T
T
a
a
a
a
a
CC
CC
CC
= –20 to +75°C (regular specifications),
= –40 to +85°C (wide-range specifications)
= –20 to +75°C (regular specifications),
= –40 to +85°C (wide-range specifications)
= –20 to +75°C
= 5.0 V ±10%, V
= 4.0 V to 5.5 V, V
= 3.0 V to 5.5 V, V
t
t
Symbol
t
t
t
t
t
t
cyc
CH
CL
Cr
Cf
OSC1
OSC2
DEXT
Min
50
17
17
—
—
10
8
500
Condition A
20 MHz
SS
= 0 V, = 2 MHz to maximum operating frequency,
SS
SS
Max
500
—
—
8
8
—
—
—
= 0 V, = 2 MHz to maximum operating frequency,
= 0 V, = 2 MHz to maximum operating frequency,
Min
62.5
20
20
—
—
10
8
500
Condition B
16 MHz
Max
500
—
—
10
10
—
—
—
Rev. 4.00 Jun 06, 2006 page 719 of 1004
Section 25 Electrical Characteristics
Min
100
30
30
—
—
20
8
500
Condition C
10 MHz
Max
500
—
—
20
20
—
—
—
Unit
ns
ns
ns
ns
ns
ms
ms
µs
REJ09B0301-0400
Test
Conditions
Figure 25.5
Figure 25.6
Figure 25.7