參數(shù)資料
型號(hào): TMS320LC57S
廠商: Texas Instruments, Inc.
元件分類: 數(shù)字信號(hào)處理
英文描述: Digital Signal Processors(35/50ns指令周期,并行邏輯單元,可編程PLL,全雙工同步串行口的DSP)
中文描述: 數(shù)字信號(hào)處理器(35/50ns指令周期,并行邏輯單元,可編程鎖相環(huán),全雙工同步串行口的數(shù)字信號(hào)處理器)
文件頁數(shù): 58/87頁
文件大小: 1864K
代理商: TMS320LC57S
TMS320C5x, TMS320LC5x
DIGITAL SIGNAL PROCESSORS
SPRS030A – APRIL 1995 – REVISED APRIL 1996
58
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
MEMORY AND PARALLEL I/O INTERFACE READ
switching characteristics over recommended operating conditions [H = 0.5t
c(CO)
] (’320C5x only)
(see Figure 15)
PARAMETER
’320C5x-40
’320C5x-57
’320C5x-80
’320C5x-100
UNIT
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
tsu(AV-RDL)
Setup time, address valid before
RD low
H – 10
H – 10
H – 7
H – 6
ns
th(RDH-AV)
Hold time, address valid after RD
high
Pulse duration, RD low§#
Pulse duration, RD high§#
0
0
0
0
ns
tw(RDL)
tw(RDH)
H – 2
H + 2
H – 2
H + 2
H – 2
H + 2
H – 2
H + 2
ns
H – 2
H – 2
H – 2
H – 2
ns
td(CO-ST)
Delay time, CLKOUT1 to STRB
rising or falling edge§
– 1
3
– 2
2
– 2
2
– 2
2
ns
td(CO-RD)
Delay time, CLKOUT1 to RD rising
or falling edge§
– 3
1
– 3
1
– 3
1
– 3
1
ns
td(RDH-WEL)
Delay time, RD high to WE low
2H – 5
2H – 5
2H – 4
2H – 4
ns
switching characteristics over recommended operating conditions [H = 0.5t
c(CO)
] (’320LC5x only)
(see Figure 15)
PARAMETER
’320LC5x-40
’320LC5x-50
’320LC5x-80
UNIT
MIN
MAX
MIN
MAX
tsu(AV-RDL)
th(RDH-AV)
tw(RDL)
tw(RDH)
td(RDH-WEL)
td(CO-RD)
td(CO-ST)
A0–A15, PS, DS, IS, R/W, and BR timings all are included in timings referenced as address.
See Figure 16 for address bus timing variation with load capacitance.
§These timings are for the cycles following the first cycle after reset, which is always seven wait states.
Values are derived from characterization data and not tested.
#Timings are valid for zero wait-state cycles only.
Setup time, address valid before RD low
Hold time, address valid after RD high
Pulse duration, RD low§#
Pulse duration, RD high§#
H – 10
H – 7
ns
0
0
ns
H – 2
H + 2
H – 2
H + 2
ns
H – 2
H – 2
ns
Delay time, RD high to WE low
Delay time, CLKOUT1 to RD rising or falling edge§
Delay time, CLKOUT1 to STRB rising or falling edge§
2H – 5
2H – 4
ns
– 2
2
– 3
1
ns
0
4
– 2
2
ns
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