参数资料
型号: M30201F6-FP
元件分类: 微控制器/微处理器
英文描述: 16-BIT, FLASH, 10 MHz, MICROCONTROLLER, PQFP56
封装: PLASTIC, QFP-56
文件页数: 68/158页
文件大小: 1633K
代理商: M30201F6-FP
17
Under
development
Mitsubishi microcomputers
M30201 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Software Wait
Software wait
The wait bit (bit 7) of the processor mode register 1 (address 000516)(note) allows you to insert software
wait states for the internal ROM/RAM areas. If this bit is 0, the bus cycle is executed in one BCLK (internal
clock) period; if the bit is 1, the bus cycle is executed in two BCLK periods. This bit is cleared to 0 after a
reset.
The SFR area is unaffected by this control bit; it is always accessed in two BCLK periods.
Table 1.2 shows the relationship between software wait states and bus cycles.
Note: Before attempting to change the contents of the processor mode register 1, set bit 1 of the protect
register (address 000A16) to “1”.
Area
Wait bit
Bus cycle
1
2 BCLK cycles
SFR
Internal
ROM/RAM
0
1 BCLK cycle
Invalid
2 BCLK cycles
Table 1.2. Software waits and bus cycles
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