CXP5084 Sony Corporation, CXP5084 Datasheet - Page 7

• Manufacturer Part Number: CXP5084
• Description: CMOS 4-bit Single Chip Microcomputer
• Manufacturer: Sony Corporation

AC characteristics
(1) Clock timing
Note) When adjusting the frequency accurately, there may be cases in which they differ from Fig. 2.
1
2
System clock frequency
System clock input pulse width
System clock input rising and falling
times
Event count clock input pulse width
Event count clock input rising and
falling times
The external clock in Fig. 2. is specified only when the option is selected for crystal or ceramic oscillation.
I
I
n the standard version,
n the high speed version,
EXTAL
EC
Item
C
Crystal oscillation
Ceramic oscillation
1
EXTAL
t
sys = 16/fc
t
sys = 8/fc
XTAL
C
2
Fig. 3. Event count clock timing
Fig. 2. Clock applying condition
Symbol
fc
t
t
t
t
t
t
t
t
XL
XH
CR
CF
EL
EH
ER
EF
t
XH
Fig. 1. Clock timing
t
EH
XTAL
EXTAL
EXTAL
EXTAL
EC
EC
C
EXTAL
CR oscillation
Pin
(Ta = –20 to +75°C, V
– 7 –
R
1/fc
t
CF
t
EF
XTAL
Fig. 1., Fig. 2.
Fig. 1., Fig. 2.
External clock drive
Fig. 1., Fig. 2.
External clock drive
Fig. 3.
Fig. 3.
Condition
t
XL
t
EL
DD
1
1
EXTAL
External clock
= 4.5 to 5.5V, V
t
CR
t
OPEN
ER
XTAL
t
sys
V
0.4V
0.8V
0.2V
1
DD
Min.
– 0.4V
90
2
DD
1
SS
+ 0.05
= 0V reference)
CXP5084/5086
Max. Unit
200
20
5
MHz
ms
ns
ns
µs