参数资料
型号: RTC6581
元件分类: 时钟/数据恢复及定时提取
英文描述: REAL TIME CLOCK, PDIP24
封装: DIP-24
文件页数: 5/35页
文件大小: 591K
代理商: RTC6581
EPSON
EPSON ELECTRONICS AMERICA, INC.
RTC-658X/RTC-659X
4. Bus Timing
VDD=5.0V
±10%, Ta=-10 to 70°C
Characteristics
Symbol
MIN
MAX
Unit
Cycle time
tcyc
953
DC
nS
Pulse with DS/E low or RD/WR high
PWEL
300
----
nS
Pulse with DS/E high or RD/WR low
PWEH
325
----
nS
Input RISE/FALL time
tR, tF
----
30
nS
R/W hold time
t RWH
10
----
nS
W/R setup time before DS/E
t RWS
80
----
nS
Chip select setup time before DS, WR or RD
t CS
25
----
nS
Chip select hold time
t CH
0
----
nS
Read data hold time
t DHR
10
100
nS
Write data hold time
t DHW
0
----
nS
Multiplexed address valid time to AS/ALE fall
t ASL
50
----
nS
Multiplexed address hold time
t AHL
20
----
nS
Delay time DS/E to AS/ALE rise
t ASD
50
----
nS
Pulse width AS/ALE high
PWASH
135
----
nS
Delay time AS/ALE to DS/E rise
t ASED
60
----
NS
Output data delay time from DS/E or RD
t DDR
20
240
nS
Write Data setup time
t DSW
200
----
nS
Output Load
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