參數(shù)資料
型號： MB90P641APF
元件分類： 微控制器/微處理器
英文描述： 16-BIT, OTPROM, 17 MHz, MICROCONTROLLER, PQFP100
封裝： PLASTIC, QFP-100
文件頁數(shù)： 25/94頁
文件大小： 1542K
代理商： MB90P641APF
31
MB90640A Series
(3) Port Pin Allocation
Ports 1, 4, and 5 on the MB90640A series share pins with the external bus. The pin functions are determined
by the bus mode and register settings.
Notes: The upper address, WRL, WRH, HAK, HRQ, RDY, and CLK can be set for use as ports by function selection.
The pins mentioned above can be used as a port in single-chip mode.
Pin name
Function
Non-multiplex mode
Multiplex mode
External address control
Enable (address)
Disable (port)
Enable (address)
Disable (port)
External bus width
8 bits
16 bits
8 bits
16 bits
8 bits
16 bits
8 bits
16 bits
D07 to D00/
AD07 to AD00
D07 to D00
AD07 to AD00
P17 to P10/
D15 to D08/
AD15 to AD08
Port
D15 to D08
Port
D15 to D08
A15 to A08 AD15 to AD08 A15 to A08 AD15 to AD08
P27 to P20/
A07 to A00
Port
P37 to P30/
A15 to A08
P47 to P40/
A23 to A16
Port
A23 to A16
Port
P57/ALE
ALE
RD
P55/WRL
WRL
P54/WRH
Port
WRH
Port
WRH
Port
WRH
Port
WRH
P53/HRQ
HRQ
P52/HAK
HAK
P51/RDY
RDY
P50/CLK
CLK
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