參數(shù)資料
型號(hào)： M37212M8
廠商： Mitsubishi Electric Corporation
英文描述： Single Chip 8 Bits Microcomputer(8位單片機(jī))
中文描述： 單芯片8位單片機(jī)（8位單片機(jī)）
文件頁(yè)數(shù)： 51/119頁(yè)
文件大?。?/td> 1308K
代理商： M37212M8
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51
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
with ON-SCREEN DISPLAY CONTROLLER
M37212M4/M8–XXXSP, M37212M6–XXXSP/FP
M37212EFSP/FP
MITSUBISHI MICROCOMPUTERS
Rev. 1.0
Fig. 8.9.2 ROM Correction Enable Register
Fig. 8.9.1 ROM Correction Address Registers
8.9 ROM CORRECTION FUNCTION
This can correct program data in ROM. Up to 2 addresses can be
corrected, a program for correction is stored in the ROM correction
memory in RAM as the top address. The ROM correction vectors are
2 vectors.
Vector 1 : address 02C0
16
Vector 2 : address 02E0
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 vector as the top address,
the main program branches to the correction program stored in the
ROM memory for correction. To return from the correction program
to the main program, the op code and operand of the JMP instruction
(total of 3 bytes) are necessary at the end of the correction program.
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 correction
program to the main program.
3:
Do not set the same ROM correction address to vectors 1 and 2.
4:
Only M37212M8-XXXSP and M37212EFSP/FP have ROM correc-
tion function.
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相關(guān)PDF資料
PDF描述
M37212EFSP Single Chip 8 Bits Microcomputer(8位單片機(jī))
M37212M4-XXXSP SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
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M37220M3-157SP 制造商:MITSUBISHI 制造商全稱(chēng):Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
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