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参数资料
| 型号： | M37224M3-XXXSP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP42 |
| 封装： | 0.600 INCH, 1.778 MM PITCH, SHRINK, PLASTIC, DIP-42 |
| 文件页数： | 46/83页 |
| 文件大小： | 901K |
| 代理商： | M37224M3-XXXSP |
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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 02C016 to 02DF16
Block 2 : addresses 02E016 to 02FF16
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 021B16]
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
RW
R—
00
2,3 Fix these bits to “0.”
0
RW
After reset
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)
Fig. 51. ROM Correction Address Registers
Fig. 52. ROM Correction Enable Register
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相关代理商/技术参数 |
参数描述 |
|---|---|
| M37225ECSP | 制造商:MITSUBISHI 制造商全称: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 制造商全称: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 制造商全称:Renesas Technology Corp 功能描述:SNGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER |
| M37225MA | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SNGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER |
| M372429100 | 制造商:ITW Switches 功能描述:IN-RUSH |
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