參數(shù)資料
型號(hào): ADUC831
廠商: Analog Devices, Inc.
英文描述: LJT 6C 6#22D PIN RECP
中文描述: MicroConverter的,12位ADC和62 kBytes為嵌入式閃存MCU數(shù)模轉(zhuǎn)換器
文件頁(yè)數(shù): 66/76頁(yè)
文件大?。?/td> 1211K
代理商: ADUC831
REV. 0
–66–
ADuC831
TIMING SPECIFICATIONS
1, 2, 3
(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
Variable Clock
Min
Typ
Parameter
Typ
Max
Max
Unit
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
ADuC831 Machine Cycle Time
83.33
62.5
20
20
1000
ns
ns
ns
ns
ns
μ
s
68
68
68
68
68
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
OH
/V
OL
level occurs.
3
C
LOAD
for Port0, ALE,
PSEN
outputs = 100 pF; C
LOAD
for all other outputs = 80 pF unless otherwise noted.
4
ADuC831 Machine Cycle Time is nominally defined as MCLKIN/12.
t
CKH
t
CKL
t
CK
t
CKF
t
CKR
Figure 68. XTAL 1 Input
DV
DD
– 0.5V
0.45V
0.2DV
+ 0.9V
TEST POINTS
0.2DV
DD
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 69. Timing Waveform Characteristics
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