參數(shù)資料
型號: MB91FV130CR-ES
元件分類: 微控制器/微處理器
英文描述: 32-BIT, FLASH, 33 MHz, RISC MICROCONTROLLER, CPGA299
封裝: CERAMIC, PGA-299
文件頁數(shù): 63/123頁
文件大小: 1331K
代理商: MB91FV130CR-ES
MB91133/MB91F133
44
Block Diagram of Input / Output Port (Open-drain Output Function with Pull-up Resistance)
Pull-up resistance control register (PCR) R/W
Controls pull up resistance ON/OFF.
0 : Without pull-up resistance
1 : With pull-up resistance
Open-drain control register (ODCR) R/W
Controls open-drain in output mode.
0 : Standard output port in output mode
1 : Open-drain output port in output mode
Notes :
This has no meaning in input mode (output Hi-Z) . Input/output mode is decided by the Direction Register
(DDR) .
Pull-up resistance control register setting is handled as the priority in stop mode (HIZ = 1) as well.
Use of both the pull-up resistance control function and open-drain control function are prohibited when the
pin concerned is used as an external bus pin. “1” should not be written in both registers.
Data bus
PDR read
0
1
0
1
pin
PDR
DDR
ODCR
PCR
PDR
DDR
ODCR
PCR
: Port Data Register
: Data Direction Register
: OpenDrain Control Register
: Pull-up Control Register
Resource input
Resource output
permission
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