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參數(shù)資料
| 型號(hào)： | MB91V301A |
| 元件分類(lèi)： | 微控制器/微處理器 |
| 英文描述： | 32-BIT, 68 MHz, RISC MICROCONTROLLER, CPGA179 |
| 封裝： | CERAMIC, PGA-179 |
| 文件頁(yè)數(shù)： | 72/140頁(yè) |
| 文件大?。?/td> | 2841K |
| 代理商： | MB91V301A |
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MB91301 Series
DS07-16502-4E
37
Operating mode
Bus mode
The bus mode controls the operations of internal ROM and the external access function. It is specified with
the mode setting pins (MD2, MD1, and MD0) and the ROMA bit in mode data.
Access mode
The access mode controls the external data bus width. It is specified with the WTH1 and WTH0 bits in the
mode register and the DBW1 and DBW0 bits in area configuration registers 0 to 7 (ACR0 to ACR7).
Bus Modes
The FR family has three bus modes: bus mode 0 (single-chip mode), bus mode 1 (internal-ROM, external-bus
mode), and bus mode 2 (external-ROM, external-bus mode).
The MB91V301A supports only bus mode 2 (external-ROM, external-bus mode).
See “1. Memory Space” in
■CPU for details.
Bus mode0 (single chip mode) (only MB91302A)
The internal I/O, 4 Kbytes D-bus RAM, 32 Kbytes F-bus RAM (FRAM) and 96 Kbytes F-bus ROM are valid,
while access to any other areas is invalid under this mode. The function of external pin is peripheral or general-
purpose port. The pin can not be used as the bus pin.
Bus mode 1 (internal ROM external bus mode)
The internal I/O, D-bus RAM, F-bus RAM (FRAM) and F-bus ROM are valid, and access to areas where
external access is enabled will access external space under this mode. A part of an external terminal functions
as a bus terminal.
Bus mode 2 (External-ROM, external-bus mode)
This mode enables internal I/O and D-bus RAM, in which any access is access to external space. Some
external pins serve as bus pins.
Bus mode
Access mode
Single chip
Internal ROM external bus
32-bit bus width
16-bit bus width
External ROM external bus
8-bit bus width
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| MB91302APFF-G-001-BNDE1 | 32-BIT, MROM, 68 MHz, RISC MICROCONTROLLER, PQFP144 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MB91V301A-RDK01 | 制造商:FUJI 制造商全稱(chēng):Fuji Electric 功能描述:32-Bit Proprietary Microcontroller |
| MB91V307RCR | 制造商:FUJITSU 制造商全稱(chēng):Fujitsu Component Limited. 功能描述:32-Bit Microcontroller |
| MB91V350A | 制造商:FUJITSU 制造商全稱(chēng):Fujitsu Component Limited. 功能描述:32-Bit Proprietary Microcontroller |
| MB91V650 | 制造商:FUJITSU 制造商全稱(chēng):Fujitsu Component Limited. 功能描述:32-bit Microcontrollers |
| MB-920 | 制造商:Maxxtro 功能描述: |
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