Rabbit 2000 - Page 167

User’s Manual 161
Table 15-7 provides typical memory and external I/O parameters measured at 3.3 V.
Table 15-7. Memory and External I/O Read/Write Parameters at 3.3 V
Parameter Description Value
Read
Parameters
T
adr
Time from CPU clock rising
edge to address valid
Max. 10 ns @ 20 pF
19 ns @ 70 pF
T
setup
Data read setup time Min. 3 ns
T
hold
Data read hold time Min. 0 ns
Write
Parameters
T
adr
Time from CPU clock rising
edge to address valid
Max. 10 ns @ 20 pF
19 ns @ 70 pF
T
hold
Data write hold time from /WEx
or /IOWR
Min. ½ CPU clock cycle