mb91101 Fujitsu Microelectronics, Inc., mb91101 Datasheet - Page 23

• Manufacturer Part Number: mb91101
• Description: 32-bit Risc Microcontroller Cmos
• Manufacturer: Fujitsu Microelectronics, Inc.

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