參數(shù)資料
型號(hào): T8xC51SND1
廠商: Atmel Corp.
英文描述: Single Chip Microcontroller with MP3 Decoder and Man Machine Interface
中文描述: 單芯片微控制器,帶有MP3解碼器和人機(jī)界面
文件頁(yè)數(shù): 40/60頁(yè)
文件大小: 868K
代理商: T8XC51SND1
40
T8xC51SND1
Rev. D
15-Nov-01
Table 46.
External 8-bit Bus Cycle - Data Write AC Timings
VDD= 2.7 to 3.3 V, TA= -40 to +85
°
C
12.4.3 Waveforms
Figure 16.
External 8-bit Bus Cycle - Data Read Waveforms
Figure 17.
External 8-bit Bus Cycle - Data Write Waveforms
Symbol
Parameter
Variable Clock
Standard Mode
Variable Clock
X2 Mode
Unit
Min
Max
Min
Max
T
CLCL
Clock Period
50
50
ns
T
LHLL
ALE Pulse Width
2
·
T
CLCL
-15
T
CLCL
-15
ns
T
AVLL
Address Valid to ALE Low
T
CLCL
-20
0.5
·
T
CLCL
-20
ns
T
LLAX
Address hold after ALE
Low
T
CLCL
-20
0.5
·
T
CLCL
-20
ns
T
LLWL
ALE Low to WR# Low
3
·
T
CLCL
-30
1.5
·
T
CLCL
-30
ns
T
WLWH
WR# Pulse Width
6
·
T
CLCL
-25
3
·
T
CLCL
-25
ns
T
WHLH
WR# High to ALE High
T
CLCL
-20
T
CLCL
+20
0.5
·
T
CLCL
-20
0.5
·
T
CLCL
+20
ns
T
AVWL
Address Valid to WR#
Low
4
·
T
CLCL
-30
2
·
T
CLCL
-30
ns
T
QVWH
Data Valid to WR# High
7
·
T
CLCL
-20
3.5
·
T
CLCL
-20
ns
T
WHQX
Data Hold after WR# High
T
CLCL
-15
0.5
·
T
CLCL
-15
ns
T
AVDV
T
LLAX
T
RHDX
T
RHDZ
T
AVLL
T
AVRL
P2
P0
RD#
ALE
T
LHLL
T
RLRH
Data In
A15:8
T
RLAZ
T
LLRL
T
RHLH
T
RLDV
D7:0
A7:0
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