CHAPTER 2 PIN FUNCTIONS
33
User’s Manual U15195EJ5V0UD
2.2 Pin
Status
The following table shows the status of each pin after a reset, in power-saving mode (software STOP mode, IDLE,
HALT), and during a DMA transfer.
Operating Status
Pin
Reset
(Single-Chip Mode)
Reset
(ROMless Mode)
IDLE Mode/
Software STOP Mode
HALT Mode/
During DMA Transfer
A16 to A21 (PDH0 to PDH5)
Hi-Z Hi-Z Hi-Z
Operating
AD0 to AD15 (PDL0 to PDL15)
Hi-Z Hi-Z Hi-Z
Operating
LWR, UWR (PCT0, PCT1)
Hi-Z
Hi-Z
H
Operating
RD (PCT4)
Hi-Z
Hi-Z
H
Operating
ASTB (PCT6)
Hi-Z
Hi-Z
H
Operating
WAIT (PCM0)
Hi-Z
Hi-Z
−
Operating
CLKOUT (PCM1)
Hi-Z
Operating L Operating
Caution When controlling the external bus using an ASIC or the like in standby mode, provide a separate
controller.
Remarks
Hi-Z: High impedance
H: High-level
output
L: Low-level
output
−
:
No input sampling