參數(shù)資料
型號(hào): ADUC812BS-REEL
廠商: ANALOG DEVICES INC
元件分類: 微控制器/微處理器
英文描述: MSC-51 8K-Flash/256-RAM/640-EEPROM(543.84 k)
中文描述: 8-BIT, FLASH, 11.0592 MHz, MICROCONTROLLER, PQFP52
封裝: MQFP-52
文件頁數(shù): 21/31頁
文件大?。?/td> 543K
代理商: ADUC812BS-REEL
REV. 0
ADuC812
21
AV
DD
= DV
DD
= +3.0 V or 5.0 V
10%. All specifications T
A
= T
MIN
to T
MAX
unless otherwise noted.
12 MHz
Min
Typ
Max
Min
Variable Clock
Typ
Parameter
Max
Units
Figure
CLOCK INPUT (External Clock Driven XTAL1)
t
CK
XTAL1 Period
t
CKL
XTAL1 Width Low
t
CKH
XTAL1 Width High
t
CKR
XTAL1 Rise Time
t
XTAL1 Fall Time
t
CKF
ADuC812 Machine Cycle Time
83.33
62.5
20
20
1000
ns
ns
ns
ns
ns
μ
s
20
20
20
20
20
20
20
20
20
20
20
1
12t
CK
NOTES
1
AC inputs during testing are driven at DV
DD
– 0.5 V for a Logic 1 and 0.45 V for a Logic 0. Timing measurements are made at V
IH
min for a Logic 1 and V
IL
max for
a Logic 0.
2
For timing purposes, a port pin is no longer floating when a 100 mV change from load voltage occurs. A port pin begins to float when a 100 mV change from the
loaded V
/V
level occurs.
3
C
for Port0, ALE,
PSEN
outputs = 100 pF; C
for all other outputs = 80 pF unless otherwise noted.
4
ADuC812 Machine Cycle Time is nominally defined as MCLKIN/12.
t
CKL
t
CKF
t
CK
t
CKH
t
CKR
Figure 20. XTAL 1 Input
V
CC
0.5V
0.45V
0.2V
+ 0.9V
TEST POINTS
0.2V
CC
0.1V
V
LOAD
0.1V
V
LOAD
V
LOAD
+ 0.1V
TIMING
REFERENCE
POINTS
V
LOAD
0.1V
V
LOAD
V
LOAD
0.1V
Figure 21. Timing Waveform Characteristics
TIMING SPECIFICATIONS
1, 2, 3
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