參數(shù)資料
型號： M37224M3
廠商： Mitsubishi Electric Corporation
英文描述： Single Chip 8 Bits Microcomputer(8位單片機)
中文描述： 單芯片8位單片機（8位單片機）
文件頁數(shù)： 50/83頁
文件大?。?/td> 901K
代理商： M37224M3
M37224M3-XXXSP
MITSUBISHI MICROCOMPUTERS
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
with ON-SCREEN DISPLAY CONTROLLER
50
ROM CORRECTION FUNCTION
This can correct program data in ROM. Up to 2 addresses (2 blocks)
can be corrected, a program for correction is stored in the ROM cor-
rection memory in RAM. The ROM memory for correction is 32 bytes
2 blocks.
Block 1 : addresses 02C0
16
to 02DF
16
Block 2 : addresses 02E0
16
to 02FF
16
Set the address of the ROM data to be corrected into the ROM cor-
rection address register. When the value of the counter matches the
ROM data address in the ROM correction address, the main pro-
gram branches to the correction program stored in the ROM memory
for correction. To return from the correction program to the main pro-
gram, the op code and operand of the JMP instruction (total of 3
bytes) are necessary at the end of the correction program. When 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 the ROM correction address.
2 :
Use the JMP instruction (total of 3 bytes) to return from
the main program to the correction program.
3 :
Do not set the same ROM correction address to the blocks
1 and 2.
b7 b6 b5 b4 b3 b2 b1 b0
ROM correction enable register (RCR) [Address 021B
16
]
B
ROM Correction Enable Register
0
Block 1 enable bit (RC0)
Name
Functions
0: Disabled
1: Enabled
1
Block 2 enable bit (RC1)
0: Disabled
1: Enabled
4
to
7
Nothing is assigned. These bits are write disable bits. When
these bits are read out, the values are “0.”
0
0
0
R W
R W
R W
R —
0
0
2,3 Fix these bits to “0.”
0
R W
After reset
0217
16
ROM correction address 1 (high-order)
0218
16
ROM correction address 1 (low-order)
0219
16
ROM correction address 2 (high-order)
021A
16
ROM correction address 2 (low-order)
Fig. 51. ROM Correction Address Registers
Fig. 52. ROM Correction Enable Register
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M37224M3-050SP 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
M37224M3-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
M37225ECSP 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
M37225M6 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SNGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
M37225M8 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SNGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
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