M306V2ME Datasheet, PDF (31/276 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER

MITSUBISHI MICROCOMPUTERS
M306V2ME-XXXFP
M306V2EEFP
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
(4) ALE signal
The ALE signal latches the address when accessing the multiplex bus space. Latch the address when
the ALE signal falls.
When BYTE pin = “H”
ALE
D0/A0 to D7/A7
Address
Data (Note 1)
A8 to A19
Address (Note 2)
When BYTE pin = “L”
ALE
A0
Address
D0/A1 to D7/A8
Address
Data (Note 1)
A9 to A19
Address
Notes 1: Floating when reading.
2: When multiplexed bus for the entire space is selected, these are I/O ports.
Figure 2.4.5 ALE signal and address/data bus
Rev. 1.0
31