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Table 3-3. Refresh controller timing (Vcc = 5.0V, f = 16MHz)
Characteristics
RAS delay time 1
RAS delay time 2
RAS delay time 3
Row address hold time
RAS pre-charge time
CAS to RAS pre-charge time
CAS pulse width
RAS access time
Address access time
CAS access time
Write data setup time 3
CAS setup time
Read strobe delay time
3-16 In-Circuit Emulation
H8/3003
Symbol
Vcc = 5V
f = 16MHz
min
max
t
-
30
RAD1
t
-
30
RAD2
t
-
30
RAD3
t
15
-
RAH
t
35
-
RP
t
35
-
CRP
t
40
-
CAS
t
-
85
RAC
t
-
55
AA
t
-
25
CAC
t
40
-
WDS3
t
15
-
CSR
t
-
30
RSD
*1 Typical outputs measured with 50pF load
Probe Type
HP 64784E
HP 64784D
+
HP 64784x
typ *1
worst typ *1 worst
23.6
41.6
17.8
22.2
41.6
16.2
8.0
41.6
6.6
22.0
-10.5
27.0
60.8
25.8
61.4
61.4
28.6
60.2
52.8
33.6
53.2
74.4
44.4
82.8
42.4
21.3
51.2
23.0
-12.3
30.6
33.8
-4.8
33.4
24.2
11.6
24.2
9.0
35.8
9.6
Unit
39.0
ns
39.0
ns
39.0
ns
-9.5
ns
26.7
ns
29.1
ns
34.1
ns
49.0
ns
24.8
ns
-9.2
ns
-6.6
ns
11.0
ns
34.7
ns
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