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CHAPTER 23 LOCAL BUS INTERFACE FUNCTIONS
User’s Manual U12697EJ3V0UM
(b) Data read timing
Address
P4, P5, P60 to P63
P67/ASTB
P64/RD
P65/WR H
P37/EXA
(c) Data write timing
Address
Data
P4, P5, P60 to P63
P67/ASTB
P64/RD
P65/WR H
P37/EXA
23.6.5 EXA pin status during each mode
P37/EXA pin status during each mode is shown in Table 23-4.
Table 23-4. P37/EXA Pin Status in Each Mode
Mode
P37/EXA Functions
After reset
Hi-Z
Normal operation
Hi-Z immediately after the reset is canceled (input mode, PM37 = 1)
Port operations when EXAE = 00H with PM37 and P37 = 0
EXA signal output enabled when EXAE = 01H with PM37 and P37 = 0
In HALT mode
Standby
In IDLE mode
Hi-Z
In STOP mode
Hi-Z