Rabbit 2000 - Page 161

User’s Manual 155
Table 15-2. Memory Access Time Requirements (V±5%, T -40°C to +70°C)
Clock
Speed
(MHz)
Period
(ns)
Wait
States
Memory
Access Time
@5 V 20 pF
Load
(ns)
Memory
Access Time
@5 V 70 pF Load
(ns)
Maximum PC-
Compatible
Baud Rate
(bps)
29.4912 34 0 59 52 921,600
27.6480 36.2 0 64 57 57,600
25.8048 38.7 0 69 62 115,200
25.8048 38.7 1 108 101 115,200
25.8048 38.7 2 147 140 115,200
24.576 40.7 0 73 66 38,400
23.9616 41.7 0 75 68 57,600
22.1184 45.2 0 82 75 230,400
22.1184 45.2 1 127 120 230,400
22.1184 45.2 2 173 165 230,400
20.2752 49.3 0 90 83 57,600
18.432 54.2 0
100 @ 5 V
96 @ 3.3 V
93 @ 5 V
87 @ 3.3 V
115,200
14.7456 67.8 0
127 @ 5 V/
123 @ 3.3 V
120 @ 5 V/
114 @ 3.3 V
460,800
14.7456 67.8 1
197 @ 5 V/
193 @ 3.3 V
190 @ 5 V/
184 @ 3.3 V
460,800
11.0592 90.5 0
172 @ 5 V
168 @ 3.3 V
162 @ 2.5 V(min)
165 @ 5 V/
159 @ 3.3 V
150 @ 2.5 V(min)
115,200
7.3728 135.6 0
263 @ 5 V/
259 @ 3.3 V
253 @ 2.5V(min)
256 @ 5 V/
250 @ 3.3 V/
241 @ 2.5 V(min)
230,400