Hitachi H8S/2378, H8S/2378R Series Hardware Manual page 188

ø
Address bus
D15 to D8
Read
D7 to D0
Write
D15 to D8
D7 to D0
Notes: 1. n = 0 to 7
2. When RDNn = 0
Figure 6.10 Bus Timing for 8-Bit, 2-State Access Space
Rev. 1.0, 09/01, page 144 of 904
Bus cycle
T T
1 2
High
Valid
High impedance
Valid
Invalid