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AM1808_1004 Fiches technique(PDF) 100 Page - Texas Instruments

No de pièce AM1808_1004
Description  AM1808 ARM Microprocessor
Download  264 Pages
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
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AM1808_1004 Fiches technique(HTML) 100 Page - Texas Instruments

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AM1808
SPRS653A – FEBRUARY 2010 – REVISED APRIL 2010
www.ti.com
6.10.5 EMIFA Electrical Data/Timing
Table 6-19 through Table 6-22 assume testing over recommended operating conditions.
Table 6-19. Timing Requirements for EMIFA SDRAM Interface
1.3V, 1.2V
1.1V
1.0V
NO.
PARAMETER
UNIT
MIN
MAX
MIN
MAX
MIN
MAX
Input setup time, read data valid on EMA_D[15:0] before
19
tsu(EMA_DV-EM_CLKH)
2
3
3
ns
EMA_CLK rising
Input hold time, read data valid on EMA_D[15:0] after
20
th(CLKH-DIV)
1.6
1.6
1.6
ns
EMA_CLK rising
Table 6-20. Switching Characteristics for EMIFA SDRAM Interface
1.3V, 1.2V
1.1V
1.0V
NO.
PARAMETER
UNIT
MIN
MAX
MIN
MAX
MIN
MAX
1
tc(CLK)
Cycle time, EMIF clock EMA_CLK
10
15
20
ns
2
tw(CLK)
Pulse width, EMIF clock EMA_CLK high or low
3
5
8
ns
3
td(CLKH-CSV)
Delay time, EMA_CLK rising to EMA_CS[0] valid
7
9.5
13
ns
4
toh(CLKH-CSIV)
Output hold time, EMA_CLK rising to EMA_CS[0] invalid
1
1
1
ns
5
td(CLKH-DQMV)
Delay time, EMA_CLK rising to EMA_WE_DQM[1:0] valid
7
9.5
13
ns
Output hold time, EMA_CLK rising to EMA_WE_DQM[1:0]
6
toh(CLKH-DQMIV)
1
1
1
ns
invalid
Delay time, EMA_CLK rising to EMA_A[12:0] and
7
td(CLKH-AV)
7
9.5
13
ns
EMA_BA[1:0] valid
Output hold time, EMA_CLK rising to EMA_A[12:0] and
8
toh(CLKH-AIV)
1
1
1
ns
EMA_BA[1:0] invalid
9
td(CLKH-DV)
Delay time, EMA_CLK rising to EMA_D[15:0] valid
7
9.5
13
ns
10
toh(CLKH-DIV)
Output hold time, EMA_CLK rising to EMA_D[15:0] invalid
1
1
1
ns
11
td(CLKH-RASV)
Delay time, EMA_CLK rising to EMA_RAS valid
7
9.5
13
ns
12
toh(CLKH-RASIV)
Output hold time, EMA_CLK rising to EMA_RAS invalid
1
1
1
ns
13
td(CLKH-CASV)
Delay time, EMA_CLK rising to EMA_CAS valid
7
9.5
13
ns
14
toh(CLKH-CASIV)
Output hold time, EMA_CLK rising to EMA_CAS invalid
1
1
1
ns
15
td(CLKH-WEV)
Delay time, EMA_CLK rising to EMA_WE valid
7
9.5
13
ns
16
toh(CLKH-WEIV)
Output hold time, EMA_CLK rising to EMA_WE invalid
1
1
1
ns
17
tdis(CLKH-DHZ)
Delay time, EMA_CLK rising to EMA_D[15:0] tri-stated
7
9.5
13
ns
18
tena(CLKH-DLZ)
Output hold time, EMA_CLK rising to EMA_D[15:0] driving
1
1
1
ns
100
Peripheral Information and Electrical Specifications
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