CHAPTER 3 CPU FUNCTION
User’s Manual U12688EJ4V0UM00
75
3.3.2 Operation mode specification
The operation mode is specified according to the status of pins MODE0 to MODE3. 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)
µµµµ
PD703100, 703100A
MODE3
MODE2
MODE1
MODE0
Operation Mode
External Data
Bus Width
Remarks
L
L
L
L
ROM-less mode 0
16 bits
L
L
L
H
Normal operation
mode
ROM-less mode 1
8 bits
Other than above
Setting prohibited
(b)
µµµµ
PD703101, 703101A, 703102, 703102A
MODE3
MODE2
MODE1
MODE0
Operation Mode
External Data
Bus Width
Remarks
L
L
L
L
ROM-less mode 0
16 bits
L
L
L
H
ROM-less mode 1
8 bits
L
L
H
L
Single-chip mode 0
Internal ROM
area is allocated
from address
000000H.
L
L
H
H
Normal operation
mode
Single-chip mode 1
16 bits
Internal ROM
area is allocated
from address
100000H.
Other than above
Setting prohibited
(c)
µµµµ
PD70F3102, 70F3102A
MODE3/
V
PP
MODE2
MODE1
MODE0
Operation Mode
External Data
Bus Width
Remarks
0 V
L
L
L
ROM-less mode 0
16 bits
0 V
L
L
H
ROM-less mode 1
8 bits
0 V
L
H
L
Single-chip mode 0
Internal ROM
area is allocated
from address
000000H.
0 V
L
H
H
Normal operation
mode
Single-chip mode 1
16 bits
Internal ROM
area is allocated
from address
100000H.
7.8 V
L
H
L
Flash memory programming mode
Other than above
Setting prohibited
Remark
L:
Low-level input
H: High-level input
Содержание V850E/MS1 UPD703100
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