參數(shù)資料
型號(hào): MB91121PFV
元件分類(lèi): 微控制器/微處理器
英文描述: 32-BIT, 50 MHz, RISC MICROCONTROLLER, PQFP120
封裝: PLASTIC, LQFP-120
文件頁(yè)數(shù): 15/100頁(yè)
文件大?。?/td> 2316K
代理商: MB91121PFV
MB91121 Series
DS07-16303-4E
21
■ SETTING MODE
1.
Pin
Mode setting pins and modes
* : MB91121 series does not support single-chip mode.
2.
Registers
Mode setting registers (MODR) and modes
Bus mode setting bits and functions
Note : Because of without internal ROM, MB91121 series allows “10B” setting value only.
Mode setting pins
Mode name
Reset vector
access area
External data
bus width
Bus mode
MD3 MD2 MD1 MD0
1
0
External vector mode 0
External
8 bits
External ROM/external
bus mode
1
0
1
External vector mode 1
External
16 bits
10
Inhibited
1
0
1
Internal vector mode
Internal
(Mode register)
Single-chip mode*
11
Inhibited
0
Inhibited
M1
M0
Functions
Note
0
Single-chip mode
0
1
Internal ROM/external bus mode
1
0
External ROM/external bus mode
11
Inhibited
W : Write only
X
: Indeterminate
*
: Always write “0” except for M1 and M0.
M1
M0
**
Initial value
Access
XXXX XXXXB
W
Address
0000 07FFH
Bus mode setting bit
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