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參數(shù)資料
| 型號： | 87C752 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 80C51 8-bit microcontroller family 2K/64 OTP/ROM, 5 channel 8 bit A/D, I2C, PWM, low pin count |
| 中文描述： | 80C51的8位單片機系列2K/64檢察官辦公室/光盤，5通道8位A / D，I2C和脈寬調(diào)制，低管腳數(shù) |
| 文件頁數(shù)： | 15/24頁 |
| 文件大小： | 181K |
| 代理商： | 87C752 |
Philips Semiconductors
Product specification
83C752/87C752
80C51 8-bit microcontroller family
2K/64 OTP/ROM, 5 channel 8 bit A/D, I
2
C, PWM, low pin count
1999 Jul 23
15
AC ELECTRICAL CHARACTERISTICS
T
amb
= 0
°
C to +70
°
C or –40
°
C to +85
°
C, V
CC
= 5 V
±
10%, V
SS
= 0 V
4, 8
VARIABLE CLOCK
SYMBOL
PARAMETER
MIN
MAX
UNIT
1/t
CLCL
External Clock (Figure 4)
Oscillator frequency:
3.5
16
MHz
t
CHCX
t
CLCX
t
CLCH
t
CHCL
High time
20
ns
Low time
20
ns
Rise time
20
ns
Fall time
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 4. External Clock Drive
0.2 V
CC
+ 0.9
0.2 V
CC
– 0.1
V
CC
–0.5
0.45V
SU00307
Figure 5. AC Testing Input/Output
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