參數(shù)資料
型號: LH7A400N0E000
廠商: Sharp Corporation
英文描述: 32-Bit System-on-Chip
中文描述: 32位系統(tǒng)級芯片
文件頁數(shù): 38/53頁
文件大?。?/td> 446K
代理商: LH7A400N0E000
LH7A400
32-Bit System-on-Chip
38
12/8/03
Preliminary Data Sheet
Table 9. AC Signal Characteristics
SIGNAL
TYPE
LOAD
SYMBOL
MIN.
MAX.
DESCRIPTION
ASYNCHRONOUS MEMORY INTERFACE SIGNALS (+ wait states
×
C)
1
tOVD
tOHD
tISD
tIHD
tOVCSR
tOVCSW
tOHCS
tOVWE
tOHWE
D[31:0]
Output
50 pF
1C + 1 ns
Data Valid
Data Hold
Data Setup
Data Hold
Chip Select Valid (Read)
Chip Select Valid (Write)
Chip Select Hold
Write Enable Valid
Write Enable Hold
Deassertion delay between
nWE[3:0] and nCS[3:0]/CS[7:6]
Ouput Enable Valid
Ouput Enable Hold
3C – 7 ns
3C – 20 ns
3C – 3 ns
Input
nCS[3:0]/CS[7:6]
Output
30 pF
0 ns
1C
3C – 10 ns
nWE[3:0]
Output
30 pF
1C
2C – 10 ns
tOHWECS
0
1C
nOE
Output
30 pF
tOVOE
tOHOE
1C
3C – 10 ns
SYNCHRONOUS MEMORY INTERFACE SIGNALS
50 pF
tOVA
50 pF
tOVB
50 pF
tOVD
tISD
tIHD
tOVCA
tOHCA
tOVRA
tOHRA
tOVSDW
tOHSDW
30 pF
tOVC
30 pF
tOVDQ
tOVSC
tOHSC
PCMCIA INTERFACE SIGNALS (+ wait states
×
C)
1
tOVDREG
tOHDREG
tOVD
tOHD
tISD
tIHD
tOVCE1
tOHCE1
tOVCE2
tOHCE2
tOVOE
tOHOE
tOVWE
tOHWE
tOVPCD
tOHPCD
MMC INTERFACE SIGNALS
tOVCMD
tOHCMD
tOVDAT
tOHDAT
SA[13:0]
SA[17:16]/SB[1:0]
Output
Output
Output
7.5 ns
7.5 ns
7.5 ns
Address Valid
Bank Select Valid
Data Valid
Data Setup
Data Hold
CAS Valid
CAS Hold
RAS Valid
RAS Hold
Write Enable Valid
Write Enable Hold
Clock Enable Valid
Data Mask Valid
Synchronous Chip Select Valid
Synchronous Chip Select Hold
D[31:0]
2 ns
2 ns
1 ns
2 ns
0.0 ns
2 ns
0.0 ns
2 ns
0.0 ns
2 ns
2 ns
2 ns
0.0 ns
Input
nCAS
Output
30 pF
7.5 ns
nRAS
Output
30 pF
7.5 ns
nSWE
Output
30 pF
7.5 ns
SCKE[1:0]
DQM[3:0]
Output
Output
7.5 ns
7.5 ns
7.5 ns
nSCS[3:0]
Output
30 pF
nPCREG
Output
30 pF
1C
nREG Valid
nREG Hold
Data Valid
Data Hold
Data Setup Time
Data Hold Time
Chip Enable 1 Valid
Chip Enable 1 Hold
Chip Enable 2 Valid
Chip Enable 2 Hold
Output Enable Valid
Output Enable Hold
Write Enable Valid
Write Enable Hold
Card Direction Valid
Card Direction Hold
4C – 5 ns
D[31:0]
Output
50 pF
1C
4C – 5 ns
Input
1C
4C – 15 ns
nPCCE1
Output
30 pF
1C
4C – 5 ns
nPCCE2
Output
30 pF
1C
4C – 5 ns
nPCOE
Output
30 pF
1C + 1 ns
3C – 5 ns
nPCWE
Output
30 pF
1C + 1 ns
3C – 5 ns
PCDIR
Output
30 pF
1C
4C – 5 ns
MMCCMD
Output
100 pF
3 ns
MMC Command Valid
MMC Command Hold
MMC Data Valid
MMC Data Hold
3 ns
3 ns
MMCDATA
Output
100 pF
3 ns
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