參數(shù)資料
型號: TMPR3927F
廠商: Toshiba Corporation
英文描述: 32 Bit TX39 Family System RISC Microprocessor(32位TX39系列精簡指令集系統(tǒng)計(jì)算機(jī)微處理器)
中文描述: 32位TX39家庭系統(tǒng)RISC微處理器(32位TX39系列精簡指令集系統(tǒng)計(jì)算機(jī)微處理器)
文件頁數(shù): 18/22頁
文件大?。?/td> 272K
代理商: TMPR3927F
TAEC_rev4_11-Jan-2000 18/22
TMPR3927F
TENTATIVE
6.6 AC Characteristics (of pins other than PCI interface pins)
6.6.1
Table of AC characteristics
(T
c
= 0
70
°
C, VDDS= 3.3V
±
0.3V, VDD2= 2.5V
±
0.2V, VSS = 0V, CL = 50pF)
Symbol
Signal
Description
Min
Max
Unit
t
sys
SYSCLK/SDCLK[4:0]
Cycle Time
15
ns
t
sysh
SYSCLK
Cycle Time (Half-speed bus mode)
30
ns
t
sysm
SYSCLK/SDCLK[4:0]
Min High/Low Level
5
ns
t
sysmh
SYSCLK
Min Half-Speed High/Low Level
12
ns
t
d
(1)
Output Delay
7
ns
t
oh
(1)
Output Hold
1
ns
t
su
(2)
Input Setup
7
ns
t
ih
(2)
Input Hold
0
ns
t
daz
DATA[31:0], ACK*
Data Active to Hi-Z
7
ns
t
dza
DATA[31:0], ACK*
Data Hi-Z to Active
1
ns
(1) ACK*, DATA[31:0], ROMCE[7:0]*, OE*, ACE*, SWE*, BWE[3:0]*, ADDR[19:2], DMAACK[3:0], DMADONE*, PIO[15:0], TIMER[1:0]
(2) ACK*, DATA[31:0], NMI*, INT[5:0], DMAREQ[3:0], DMADONE*, PIO[15:0]
6.6.2
SDRAM Interface AC characteristics
(T
c
= 0
70
°
C, VDDS= 3.3V
±
0.3V, VDD2= 2.5V
±
0.2V, VSS = 0V, CL = 50pF for SDCLK[4:0])
50pF
100pF
150pF
Symbol
Signal
Description
Min
Max
Min
Max
Min
Max
Unit
t
sdclk
SDCLK[4:0]/SYSCLK
Cycle Time
15
15
15
ns
t
sdclkm
SDCLK[4:0]/SYSCLK
Minimum High/Low Level
5
5
5
ns
t
sd
3
Output Delay
7
8
9
ns
t
sdd
DATA[31:0]
Output Delay
8
10
12
ns
t
soh
4
Output Hold
1
1
1
ns
t
ssu1
DATA[31:0]
Input Setup (Internal clock)
7
7
7
ns
t
ssu2
DATA[31:0]
Input Setup (Pin feed-back clock)
2
2
2
ns
t
sih
DATA[31:0]
Input Hold
0
0
0
ns
t
sdaz
DATA[31:0]
Data Active to Hi-Z
7
7
7
ns
t
sdza
DATA[31:0]
Data Hi-Z to Active
1
1
1
ns
(3) SDCS[7:0], RAS*, CAS*, WE*, CKE, OE*, DSF, ADDR[19:5], DQM[3:0]
(4)
SDCS[7:0], RAS*, CAS*, WE*, CKE, OE*, DSF, ADDR[19:5], DQM[3:0], DATA[31:0]
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