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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)： | 60/63頁 |
| 文件大?。?/td> | 8367K |
| 代理商： | M37735EHLHP |
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CENTRAL PROCESSING UNIT (CPU)
7733 Group User’s Manual
2–25
2.5.1 Single-chip mode
When not using an external device, this mode is used. In this mode, ports P0 to P8 function as programmable
I/O ports. (When using internal peripheral devices, they function as I/O pins.) Only the internal area (SFR,
internal RAM, and internal ROM) can be accessed.
_
Output of E can be stopped by software. (Refer to section “12.1 Signals required for accessing external
devices.”)
2.5.2 Memory expansion and Microprocessor modes
When connecting an external device, these modes are used. In these modes, an external device can be
connected to an arbitrary area in the 16-Mbyte accessible area. For access to an external device, refer to
chapter “12. CONNECTING EXTERNAL DEVICES.”
The memory expansion and microprocessor modes have the same functions except for the followings:
In the microprocessor mode, access to the internal ROM area is forcibly disabled. This area is handled
as the external area.
In the microprocessor mode, port P42 functions as a clock
φ1 output pin. (Note)
In the memory expansion and microprocessor modes, pins P0 to P3, P40, and P41 function as I/O pins for
signals required for access to an external device. Therefore, these pins cannot be used as programmable
I/O ports.
If an external device is connected to a certain area which is allocated to the internal area, when this area
is read, data in the internal area is fetched into the central processing unit (BIU) but data in the external
area is not fetched; when data is written to this area, the data is written to the internal area and signals
are output to the external at the same timing as writing to the internal area.
Note: Output of clock
φ1 can be stopped by software. (For details, refer to section “12.1 Signals required
for accessing external devices.”)
Figure 2.5.2 shows the pin configuration in each processor mode. Table 2.5.1 lists the relationship between
processor modes and functions of P0 to P4.
For each pin’s function, refer to section “1.3 Pin description,” chapters “3. PROGRAMMABLE I/O PORTS”
to “9. A-D CONVERTER” and “12. CONNECTING EXTERNAL DEVICES.”
2.5 Processor modes
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PDF描述 |
|---|---|
| M37753M6C-XXXFP | 16-BIT, MROM, 40 MHz, MICROCONTROLLER, PQFP80 |
| M37754M6C-XXXHP | 16-BIT, MROM, 40 MHz, MICROCONTROLLER, PQFP100 |
| M37754M6C-XXXGP | 16-BIT, MROM, 40 MHz, MICROCONTROLLER, PQFP100 |
| M37754M8C-XXXGP | 16-BIT, MROM, 40 MHz, MICROCONTROLLER, PQFP100 |
| M37754S4CGP | 16-BIT, 40 MHz, MICROCONTROLLER, PQFP100 |
相關代理商/技術參數(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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