7721 Datasheet, PDF (53/577 Pages) List of Unclassifed Manufacturers – H Bridge Power Module

CONNECTION WITH EXTERNAL DEVICES
3.1 Signals required for accessing external devices
q External data bus width = 16 bits (BYTE = “L”)
<16-bit data access>
(a) Access beginning at even address
E
ALE
A0 to A7
Address
A8/D8 to A15/D15
Address Data(odd)
A16/D0 to A23/D7
Address Data(even)
BLE
BHE
(b) Access beginning at odd address
E
ALE
A0 to A7
Address
Address
A8/D8 to A15/D15
Address Data(odd) Address
A16/D0 to A23/D7
Address
Address Data(even)
BLE
BHE
<8-bit data access>
(c) Access to even address
E
ALE
A0 to A7
Address
A8/D8 to A15/D15
Address
A16/D0 to A23/D7
Address Data(even)
BLE
BHE
(d) Access to odd address
E
ALE
A0 to A7
Address
A8/D8 to A15/D15
Address Data(odd)
A16/D0 to A23/D7
Address
BLE
BHE
Fig. 3.1.2 Examples of operating waveforms of signals input from or output to the external (1)
3–6
7721 Group User’s Manual