參數(shù)資料
型號: M30302M8L-XXXFP
元件分類: 微控制器/微處理器
英文描述: 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP100
封裝: 14 X 20 MM, PLASTIC, QFP-100
文件頁數(shù): 86/165頁
文件大?。?/td> 2188K
代理商: M30302M8L-XXXFP
Bus Control
27
Mitsubishi microcomputers
M16C / 30L Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
W
Function
Bit symbol
Bit name
Chip select control register
Symbol
Address
When reset
CSR
000816
0116
R
b7
b6
b5
b4
b3
b2
b1
b0
CS1
CS0
CS3
CS2
CS0 output enable bit
CS1 output enable bit
CS2 output enable bit
CS3 output enable bit
CS1W
CS0W
CS3W
CS2W
CS0 wait bit
CS1 wait bit
CS2 wait bit
CS3 wait bit
0 : Chip select output disabled
(Normal port pin)
1 : Chip select output enabled
0 : Wait state inserted
1 : No wait state
Figure 1.9.1. Chip select control register
The timing of the chip select signal changing to “L”(active) is synchronized with the address bus. But the
timing of the chip select signal changing to “H” depends on the area which will be accessed in the next
cycle. Figure 1.9.2 shows the output example of the address bus and chip select signal.
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