參數(shù)資料
型號: SM34020AHTM32
廠商: TEXAS INSTRUMENTS INC
元件分類: 圖形處理器
英文描述: GRAPHICS PROCESSOR, CQFP132
封裝: CERAMIC, QFP-132
文件頁數(shù): 82/98頁
文件大小: 1546K
代理商: SM34020AHTM32
SMJ34020A
GRAPHICS SYSTEM PROCESSOR
SGUS011D -- APRIL 1991 -- REVISED SEPTEMBER 2004
83
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251--1443
local-bus timing: RAS, CAS0--CAS3,WE,TR/QE, and SF (see Notes 5 and 11 and Figure 49)
(continued)
NO
34020A-32
34020A-40
UNIT
NO.
MIN
MAX
MIN
MAX
UNIT
97
tsu(WEL-CEL)
Setup time, write low before CAS no
longer high (on write cycles)
tQ--15
tQ--13.5
ns
98
tw(REH)
Pulse duration, RAS high
4tQ--12+ s
4tQ--10+ s
ns
99
tw(REL)
Pulse duration, RAS low
4ntQ--12+ s’
4ntQ--4+ s’
ns
100
tw(CEH)
Pulse duration, CAS high
2tQ--12
2tQ--10
ns
101
tw(CEL)
Pulse duration, CAS low
2tQ--12
2tQ--8
ns
102
td(REL-CEH)
Delay time, RAS low to CAS no longer
low
4tQ--12+ s
4tQ--4+s
ns
NOTES: 5. s =tQ if using the clock stretch;
s = 0 otherwise
s’ is 2tQ when using the clock stretch since both the address cycle and read cycle of a Read-Modify-Write will be stretched.
11. Parameter 96 has been eliminated.
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