CXP85112 Sony Corporation, CXP85112 Datasheet - Page 12

• Manufacturer Part Number: CXP85112
• Description: CMOS 8-bit Single-chip Microcomputer
• Manufacturer: Sony Corporation

AC Characteristics
(1) Clock timing
1
System clock frequency
System clock input
pulse width
System clock input rise
time, fall time
Event clock input clock
pulse width
Event count input clock
rise time, fall time
t
control register (address: 00FE
t
sys indicates the three values below according to the upper two bits (CPU clock selection) of the clock
sys [ns] = 2000/fc (upper two bits = "00"), 4000/fc (upper two bits = "01"), 16000/fc (upper two bits = "11")
EXTAL
EC
Item
C
Symbol
Crystal oscillation
Ceramic oscillation
f
t
t
t
t
t
t
t
t
EXTAL
1
C
XL
XH
CR
CF
EH
EL
ER
EF
,
,
,
,
H
).
Fig. 2. Clock applying condition
Fig. 3. Event count clock timing
XTAL
EXTAL
EXTAL
EXTAL
EC
EC
XTAL
t
t
XH
EH
Pins
C
Fig. 1. Clock timing
2
Fig. 1, Fig. 2
Fig. 1, Fig. 2
External clock drive
Fig. 1, Fig. 2
External clock drive
Fig. 3
Fig. 3
(Ta = –20 to +75°C, V
1/fc
– 12 –
t
t
EF
CF
Conditions
CXP85112B/85116B, CXP85220A/85224A/85228A/85232A
t
t
EL
XL
EXTAL
External clock
DD
OPEN
XTAL
= 4.5 to 5.5V, Vss = 0V reference)
t
t
CR
ER
t
sys + 50
0.4V
0.2V
Min.
V
0.8V
100
3.5
DD
DD
– 0.4V
DD
1
Max.
200
4.5
20
MHz
Unit
ms
ns
ns
ns