參數(shù)資料
型號(hào)： M37733MHB
廠商： Mitsubishi Electric Corporation
英文描述： Single Chip 16 Bits CMOS Microcomputer(16位單片機(jī))
中文描述： 單片微機(jī)16位的CMOS（16位單片機(jī)）
文件頁(yè)數(shù)： 10/89頁(yè)
文件大小： 1992K
代理商： M37733MHB
MITSUBISHI MICROCOMPUTERS
M37733MHBXXXFP
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
10
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
The bus interface unit operates using one of the waveforms (
The ALE signal is used to latch only the address signal from
multiplexed signal containing data and address.
The
instruction code or data from the memory or when it writes d
the memory. Whether to perform read or write is controlled b
R/
write is performed.
Waveform (1) in Figure 5 is used to access a single byte or
simultaneously. To read or write two bytes simultaneously, t
address accessed must be even. Furthermore, when accessing a
external memory area in the memory expansion mode or the
1) to
the
E
signal becomes “L” when the bus interface unit reads an
ata to
y the
W
signal. When the R/
W
signal is “H”, read is performed; when “L”,
two bytes
he first
n
microprocessor mode, set the bus width selection input pin (
to “L” (external data bus has a width of 16 bits). The data
internal memory area is always treated as the 16-bit bus ind
of BYTE.
BYTE)
bus in the
ependent
Fig. 5 Bus access timing
Port P2
E
ALE
Port P2
E
ALE
Internal clock
Port P2
(1)
Internal clock
φ
E
ALE
A
D
A
D
A
D
A+1
D
A
D
A + 1
D
A
D
A+1
D
(2)
3)
4)
5)
6)
Access time
Access time
Access time
Access time
ccess time
Access time
A
D
D
A +
1
A
D
A
D
A + 1
D
(7)
(8)
(9)
(
Access time
Access time
D
A
A + 1
D
A
D
A + 1
D
Access time
Access time
A : Address
D :
Port P2
E
ALE
Port P2
E
ALE
Port P2
E
ALE
Port P2
E
ALE
Port P2
E
ALE
Port P2
E
ALE
Port P2
ALE
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