參數(shù)資料
型號: MB89635RPF
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 10 MHz, MICROCONTROLLER, PQFP64
封裝: PLASTIC, QFP-64
文件頁數(shù): 80/153頁
文件大?。?/td> 7326K
代理商: MB89635RPF
HARDWARE CONFIGURATION
2-9
2.1.4 Operation Modes and External Bus Operation
The MB89630 series of microcontrollers have the following three operation modes.
(1) Single-chip mode
(2) External-ROM mode
(3) External-access internal-ROM mode
The memory map for each mode is as follows:
*: MB89635 Address values. For the addresses of each product in the MB89630 series, see
2.1.1.
Fig. 2.7 Memory Maps in Various Modes
The mode that the device enters depends on the states of the device-mode pins and the contents of the
mode data fetched during the reset sequence. The relationship between the states and operations of the
device-mode pins is shown below.
The following functions are selected according to the mode-data setting conditions.
Note: Do not select the single-chip mode with the externally-fetched mode data.
MOD1
MOD0
Description
00
Reset vectors are read from the internal ROM. The operation mode is determined
according to the modde data contents.
0
1
Reset vectors are read from the external ROM. The external access functions.
1
0
Reserved for future expansion and testing.
1
Write mode for products containing EPROM.
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相關代理商/技術參數(shù)
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