參數(shù)資料
型號: S5N8947X
廠商: SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述: MCU for ADSL/Cable Modem
中文描述: 單片機為ADSL / Cable Modem的
文件頁數(shù): 39/49頁
文件大?。?/td> 407K
代理商: S5N8947X
ELECTRONICS
S5N8947 (ADSL/Cable Modem MCU)
SAMSUNG ELECTRONICS
Page : 39
MagIC Team
8.4. A.C Electrical Characteristics
(Ta = -40 to +85 Centigrade, V
DD
= 2.3V to 2.7V)
Description
Memory control signal High-Z time
Signal Name
t
EMz
t
EMRs
t
EMRh
t
EMAr
t
EMAf
t
ADDRh
t
ADDRd
t
NRCS
t
NROE
t
NWBE
t
RDh
t
WDd
t
WDh
t
NRASf
t
NRASr
t
NCASf
t
NCASr
t
NDWE
t
NDOE
t
NECS
t
WDDd
t
WDDh
t
Ws
t
Wh
T
MCLKOd
Min
Max
Unit
5.1
10.1
ns
ExtMREQ setup time
0
ExtMREQ hold time
3.0
ExtMACK rising edge delay time
12.1
29.3
ExtMACK falling edge delay time
12.3
29.7
Address hold time
8.5
Address delay time
7.08
17.5
ROM/SRAM/Flash bank chip select delay time
5.2
12.4
ROM/SRAM or external I/O bank output enable delay
5.7
13.6
ROM/SRAM or external I/O bank write byte enable delay
5.5
13.1
Read data hold time
3.0
Write data delay time (SRAM or external I/O)
17.23
Write data hold time (SRAM or external I/O)
9.4
DRAM row address strobe active delay
5.6
13.4
DRAM row address strobe release delay
4.3
16.38
DRAM column address strobe active delay
5.5
13.1
DRAM CAS signal release delay time
4.36
13.1
DRAM bank write enable delay time
5.8
13.9
DRAM bank out enable delay time
5.7
13.6
External I/O bank chip select delay time
5.3
12.5
DRAM write data delay time (DRAM)
5.9
14.2
DRAM write data hold time (DRAM)
7.4
External wait setup time
0
External wait hold time
3.0
External clock to MCLKO delay time when PLL power-down
5.0
12.45
Table 7 AC Electrical Characteristics
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