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参数资料
| 型号： | M37753M8C-XXXFP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 16-BIT, MROM, 40 MHz, MICROCONTROLLER, PQFP80 |
| 封装： | PLASTIC, QFP-80 |
| 文件页数： | 15/110页 |
| 文件大小： | 1439K |
| 代理商： | M37753M8C-XXXFP |
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11
MITSUBISHI MICROCOMPUTERS
M37753M8C-XXXFP, M37753M8C-XXXHP
M37753S4CFP, M37753S4CHP
PRELIMINAR
Y
Notice:
This
is not
a final
specification.
Some
parametric
limits
are
subject
to change.
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Figure 5 shows basic waveforms of the bus interface unit. The E sig-
nal becomes “L” when the bus interface unit reads an instruction
code or data from memory or when it writes data to memory.
Whether to perform read or write is controlled by the R/W signal.
Read is performed when the R/W signal is “H” state and write is per-
formed when it is “L” state.
Waveform (1) in Figure 5 is used to access a single byte or two bytes
simultaneously. To read or write two bytes simultaneously, the first
address accessed must be even. Furthermore, when accessing an
external memory area in memory expansion mode or microproces-
sor mode, set the bus width select input pin (BYTE) to “L” (external
data bus width = 16 bits). The internal memory area is always treated
as 16-bit bus width regardless of BYTE.
When performing 16-bit data read or write, if the conditions for simul-
taneously accessing two bytes are not satisfied, waveform (2) is
used to access each byte, one by one.
However, when prefetching the instruction code, if the address of the
instruction code is odd, only one byte is read in the instruction queue
buffer.
Fig. 5 Basic waveforms of bus interface unit
(2)
(1)
E
Internal address bus
(A0–A23)
Internal data bus
(D0–D7)
Internal data bus
(D8–D15)
Data (odd)
Address (odd)
Address (even)
Data (even)
Invalid data
E
Internal address bus
(A0–A23)
Internal data bus
(D0–D7)
Internal data bus
(D8–D15)
Address
Data (even)
Data (odd)
相关PDF资料 |
PDF描述 |
|---|---|
| M37753S4CFP | 16-BIT, 40 MHz, MICROCONTROLLER, PQFP80 |
| M37753S4CFP | 16-BIT, 40 MHz, MICROCONTROLLER, PQFP80 |
| M37753M8C-XXXHP | 16-BIT, MROM, 40 MHz, MICROCONTROLLER, PQFP80 |
| M37754M6C-XXXGP | 16-BIT, MROM, 40 MHz, MICROCONTROLLER, PQFP100 |
| M37795STJ | 16-BIT, 8 MHz, MICROCONTROLLER, PQCC84 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| M37753M8C-XXXHP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M37753S4CFP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M37753S4CHP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M37754 | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16BIT CMOS MICROCOMPUTER |
| M37754FFCGP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER FLASH MEMORY VERSION |
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