參數(shù)資料
型號: MB91V301A
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 68 MHz, RISC MICROCONTROLLER, CPGA179
封裝: CERAMIC, PGA-179
文件頁數(shù): 99/140頁
文件大?。?/td> 2841K
代理商: MB91V301A
MB91301 Series
DS07-16502-4E
61
Notes :
Use byte access to access ports.
The external bus function has priority for port 0 to port A when these are used as external bus pins.
Accordingly, writing to the DDR has no effect on the pin input/output setting while the pins are operating
as external bus pins. The value set in the DDR becomes meaningful when the PFR register is modified
to set the pins as general purpose ports.
In stop mode (HIZ = 0), the pull-up resistor control register setting is used.
In stop mode (HIZ = 1), the pull-up resistor control register (PCR) setting is ignored during hardware
standby.
Using pull-up resistors is prohibited when these pins are used as external bus pins. In this case, do not
write “1” to the corresponding bit in the pull-up resistor control register (PCR).
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