參數(shù)資料
型號: P83C754EBDDB
廠商: NXP SEMICONDUCTORS
元件分類: 微控制器/微處理器
英文描述: 80C51 8-bit microcontroller family 4K/256 OTP/ROM, DAC, comparator, UART, reference
中文描述: 8-BIT, MROM, MICROCONTROLLER, PDSO28
封裝: PLASTIC, SSOP-28
文件頁數(shù): 18/26頁
文件大?。?/td> 217K
代理商: P83C754EBDDB
Philips Semiconductors
Preliminary specification
83C754/87C754
80C51 8-bit microcontroller family
4K/256 OTP/ROM, DAC, comparator, UART, reference
1998 Apr 23
18
AC ELECTRICAL CHARACTERISTICS
T
amb
= 0
°
C to +70
°
C, V
CC
= 5V
±
10%, V
SS
= 0V
4, 8
16MHz CLOCK
VARIABLE CLOCK
SYMBOL
PARAMETER
MIN
MAX
MIN
MAX
UNIT
1/t
CLCL
External Clock (Figure 17)
Oscillator frequency
3.5
16
MHz
t
CHCX
t
CLCX
t
CLCH
t
CHCL
High time
20
20
ns
Low time
20
20
ns
Rise time
20
20
ns
Fall time
20
20
ns
EXPLANATION OF THE AC SYMBOLS
Each timing symbol has five characters. The first character is always
‘t’ (= time). The other characters, depending on their positions,
indicate the name of a signal or the logical status of that signal.
The designations are:
C – Clock
D – Input data
H – Logic level high
L – Logic level low
Q – Output data
T – Time
V – Valid
X – No longer a valid logic level
Z – Float
t
CHCL
t
CLCL
t
CLCH
t
CHCX
V
CC
–0.5
0.45V
0.2 V
CC
+ 0.9
0.2 V
CC
– 0.1
t
CLCX
SU00297
Figure 17. External Clock Drive
0.2 V
CC
+ 0.9
0.2 V
CC
– 0.1
V
CC
–0.5
0.45V
SU00307
Figure 18. AC Testing Input/Output
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