AMD Am79C930 - Manual (Page 140)

AMD P R E L I M I N A R Y
140 Am79C930
MEMORY BUS WRITE ACCESS
Parameter
Symbol Parameter Description Test Conditions Min Max Unit
t
m
AD MA[16:0] valid from CLKIN
↓
2 100 ns
t
m
CD CE active delay from CLKIN
↓
Note 1 2 100 ns
t
m
WD MWE active delay from CLKIN
↓
2 100 ns
t
m
CQ MD[7:0] driven from CLKIN ↓ 2 ns
t
m
CV MD[7:0] valid from CLKIN
↓
100 ns
t
m
AS Address Setup Time to MWE ↓
T
CLKIN
-20 ns
t
m
AW Address Write Access Time 0 wait states 160 ns
(Note 3) 1 wait state 260 ns
2 wait states 360 ns
t
m
CW CE Write Access Time 0 wait states 160 ns
(Notes 1, 3) 1 wait state 260 ns
2 wait states 360 ns
t
m
WP MWE Write Access Time 0 wait states 150 ns
(Note 3) 1 wait state 250 ns
2 wait states 350 ns
t
m
WQ MWE ↓
to MD[7:0] driven –10 ns
t
m
AH MA[16:0] valid hold from MWE ↑
T
CLKIN
-10 ns
t
m
CH CE valid hold from MWE ↑ Note 1 T
CLKIN
-10 ns
t
m
WI CE Inactive Time Note 1, 2 0 ns
t
m
SW MD[7:0] valid setup to MWE ↑
0 wait states 130 ns
1 wait state 230 ns
2 wait states 330 ns
t
m
HW MD[7:0] valid hold from MWE ↑ Note 2 T
CLKIN
-15 ns
t
m
HWZ MD[7:0] inactive from MWE ↑
Note 2 2 X T
CLKIN
-10 2 X T
CLKIN
+10 ns
Notes:
1. CE = one of: FCE , SCE , XCE
2. Parameter not included in the production test.
3. Value is dependent upon TCLKIN value. Value given is for CLKIN = 20 MHz.