CHAPTER 3 CPU FUNCTION
56
User’s Manual U15195EJ5V0UD
3.3.2
Operation mode specification
The operation mode is specified according to the status of the MODE0 and MODE1 pins. In an application system,
fix the specification of these pins and do not change them during operation. Operation is not guaranteed if these pins
are changed during operation.
(a)
µ
PD703114
MODE1 MODE0
Operation
Mode
Remark
L
L
ROMless mode
16-bit data bus
L H
Normal operation mode
Single-chip mode
Internal ROM area is allocated
from address 000000H.
Other than above
Setting prohibited
(b)
µ
PD70F3114
MODE1/V
PP
MODE0
Operation
Mode
Remark
L
L
ROMless mode
16-bit data bus
L H
Normal operation mode
Single-chip mode
Internal ROM area is allocated
from address 000000H.
7.8 V
H
Flash memory programming mode
−
Other than above
Setting prohibited
Remarks
L:
Low-level input
H:
High-level
input