參數(shù)資料
型號： M37221EFSP
元件分類： 微控制器/微處理器
英文描述： 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PDIP42
封裝： 0.600 INCH, 1.778 MM PITCH, SHRINK, PLASTIC, DIP-42
文件頁數(shù)： 44/63頁
文件大?。?/td> 1371K
代理商： M37221EFSP
M37221EF-XXXSP,M37221EFSP
MITSUBISHI MICROCOMPUTERS
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
with ON-SCREEN DISPLAY CONTROLLER
49
0
7
Fix these bits to “ 0.”
ROM correction enable register
(RCR : address 021B16)
0
0 : Disabled
1 : Enabled
0 : Disabled
1 : Enabled
Block 1 enable bit
Block 2 enable bit
ROM CORRECTION FUNCTION
This can correct ROM data in ROM (64K bytes). Up to 2 addresses
(2 blocks) can be corrected, a program for correction is stored in the
ROM memory for correction. The ROM memory for correction is 32
bytes ! 2 blocks.
Block 1 : addresses 02C016 to 02DF16
Block 2 : addresses 02E016 to 02FF16
Set an address of ROM data to be corrected into the ROM correction
address. When the value of the counter matches the ROM data ad-
dress in the ROM correction address, the main program branches to
the program for correction stored in the ROM memory for correction.
To return from the program for correction to the main program, the
op code and operand of the JMP instruction (total of 3 bytes) is needed
at the end of the program for correction. In the case that the blocks 1
and 2 are used in series, the above instruction is not needed at the
end of the block 1.
The ROM correction function is controlled by the ROM correction
enable register.
Notes 1 : Specify the first address (op code address) of each
instruction as ROM correction address.
2 : Use the JMP instruction (total of 3 bytes) to return from
the main program to the program for correction.
3 : Do not set the same ROM correction address to the blocks
1 and 2.
Fig. 54. Structure of ROM correction enable register
Fig. 53. ROM correction addresses
021716
ROM correction address 1 (high-order)
021816
ROM correction address 1 (low-order)
021916
ROM correction address 2 (high-order)
021A16
ROM correction address 2 (low-order)
相關PDF資料
PDF描述
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相關代理商/技術參數(shù)
參數(shù)描述
M37221FP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
M37221M4H 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
M37221M4H-XXXFP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
M37221M4H-XXXSP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
M37221M6 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
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