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參數(shù)資料
| 型號： | M37735EHLHP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16-BIT, OTPROM, MICROCONTROLLER, PQFP80 |
| 封裝： | FINE PITCH, PLASTIC, QFP-80 |
| 文件頁數(shù)： | 38/63頁 |
| 文件大?。?/td> | 8367K |
| 代理商： | M37735EHLHP |
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CENTRAL PROCESSING UNIT (CPU)
7733 Group User’s Manual
2–5
2.1.5 Program counter (PC)
The program counter consists of 16 bits. This counter indicates the low-order 16 bits of a store address,
which consists of 24 bits, of an instruction to be executed next, in other words an instruction which is read
from an instruction queue buffer.
At reset, value “FF16” is set to the high-order byte (PCH) of the program counter and value “FE16” is set
to the low-order byte (PCL) of the counter. And then, immediately after reset, the contents of the reset’s
vector addresses (addresses FFFE16, FFFF16) are set to the counter.
Figure 2.1.3 shows the program counter and the program bank register.
Fig. 2.1.3 Program counter and program bank register
2.1.6 Program bank register (PG)
The program bank register consists of 8 bits. (Refer to Figure 2.1.3.) This register indicates the high-order
8 bits of a store address, which consists of 24 bits, of an instruction to be executed next, in other words
an instruction which is read from an instruction queue buffer. These 8 bits indicate “bank.” The contents
of the program bank register is automatically incremented by 1 when a carry occurs in the following cases:
When a certain value is added to the contents of the program counter
When the displacement is added to the program counter by executing a branch instruction and others
The contents of the program bank register is automatically decremented by 1 when a borrow occurs in the
following case:
When a certain value is subtracted from the contents of the program counter
Therefore, when normally programming, it is not necessary to give consideration to bank boundaries.
At reset, this register is cleared to “0016.”
PCH
PCL
b7
b0 b15
b8 b7
b0
(b16)
PG
(b23)
2.1 Central processing unit
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| M37754M6C-XXXGP | 16-BIT, MROM, 40 MHz, MICROCONTROLLER, PQFP100 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M37735EHLXXXHP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:PROM VERSION OF M37735MHLXXXHP |
| M37735M4B | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M37735M4BXXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M37735M4L | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M37735M4LXXXHP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
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