DS07-16301-4E Datasheet, PDF (23/99 Pages) Fujitsu Component Limited. – 32-bit RISC Microcontroller CMOS FR30 Series

MB91101/MB91101A
s SETTING MODE
1. Pin
• Mode setting pins and modes
Mode setting
pins
MD2 MD1 MD0
Mode name
Reset vector
access area
0 0 0 External vector mode 0 External
0 0 1 External vector mode 1 External
010
—
—
0 1 1 Internal vector mode
Internal
1 ——
—
—
External data
bus width
Bus mode
8 bits
16 bits
External ROM/external bus
mode
—
Inhibited
(Mode register) Single-chip mode*
—
Inhibited
*: The MB91101 and MB91101A do not support single-chip mode.
2. Registers
• Mode setting registers (MODR) and modes
Address
Initial value
0000 07FFH
M1 M0
*
*
*
*
*
* ^{XXXX XXXXB}
Access
W
W :Write only
X :Indeterminate
* :Always write “0” except for M1 and M0.
Bus mode setting bit
• Bus mode setting bits and functions
M1
M0
Functions
0
0
Single-chip mode
0
1
Internal ROM/external bus mode
1
0
External ROM/external bus mode
1
1
—
Note
Inhibited
Note: Because of without internal ROM, the MB91101 and MB91101A allow “10B” setting value only.
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