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參數(shù)資料
| 型號： | CXP85460S |
| 廠商： | Sony Corporation |
| 元件分類： | 8位微控制器 |
| 英文描述： | 8-BIT MICROCONTROLLER |
| 中文描述： | 8位微控制器 |
| 文件頁數(shù)： | 13/21頁 |
| 文件大?。?/td> | 256K |
| 代理商： | CXP85460S |
– 13 –
CXP85452/85460
AC Characteristics
(1) Clock timing
(Ta = –20 to +75°C, V
DD
= 4.5 to 5.5V, Vss = 0V reference)
Fig. 1. Clock timing
EXTAL
t
XH
t
XL
t
CF
t
CR
0.4V
V
DD
– 0.4V
1/fc
Fig. 2. Clock applied condition
AAAAA
C
1
AAAAA
AAAAA
AAAAA
AAAAA
AAAAA
Ceramic oscillation
External clock
OPEN
C
2
Fig. 3. Event count clock timing
EC
t
EH
t
EL
t
EF
t
ER
0.2V
DD
0.8V
DD
1
t
sys indicates three values according to the contents of the clock control register (CLC: 00FE
) upper 2 bits
(CPU clock selection).
t
sys (ns) = 2000/fc (Upper 2 bits = "00"), 4000/fc (Upper 2 bits = "01"), 16000/fc (Upper 2 bits = "11")
System clock frequency
System clock input
pulse width
System clock
rise and fall times
Event count input
clock pulse width
Event count input clock
rise and fall times
f
C
t
XL
,
t
XH
t
CR
,
t
CF
t
EH
,
t
EL
t
ER
,
t
EF
XTAL
EXTAL
EXTAL
EXTAL
EC
EC
MHz
ns
ns
ns
ms
Item
Symbol
Pin
Condition
Min.
Max.
Unit
Fig. 1, Fig. 2
Fig. 1, Fig. 2
External clock drive
Fig 1, Fig 2
External clock drive
Fig. 3
Fig. 3
3.5
50
t
sys + 50
1
9
200
20
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