M37754 Mitsubishi, M37754 Datasheet - Page 74
M37754
Manufacturer Part Number
M37754
Description
SINGLE-CHIP 16BIT CMOS MICROCOMPUTER
Manufacturer
Mitsubishi
Datasheet
1.M37754.pdf
(114 pages)
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Quantity
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Part Number:
M37754S4CGP
Manufacturer:
RENESAS/瑞萨
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(3) Microprocessor mode [10]
The microcomputer enters the microprocessor mode by connecting
the CNVss pin to Vcc and starting from reset. It is possible to enter
this mode by programming the processor mode bits to “10” after con-
necting the CNVss pin to Vss and starting from reset. This mode is
the same as the memory expansion mode except the following: the
internal ROM is disabled and an external memory is required, and
clock
processor mode register 0.
As shown in Table 8,
signal output disable select bit to “1”. In this case, write “1” to the port
P4
Table 9 shows the relationship between the CNVss pin’s input level
and the processor modes.
Additionally, addresses A
can be output from port P9 regardless of processor modes. For de-
tails, refer to the following sections: output function of chip select sig-
nal and address output function.
74
2
direction register bit.
1
is always output from port P4
1
20
output can also be stopped by setting the
to A
22
or chip select signals CS
2
independent of bit 7 of the
M37754M8C-XXXGP, M37754M8C-XXXHP
___
0
to CS
___
4
Table 9. Relationship between CNV
M37754S4CGP, M37754S4CHP
CNV
V
V
CC
SS
sor modes
SS
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
• Single-chip
• Memory expansion
• Microprocessor
• Microprocessor
MITSUBISHI MICROCOMPUTERS
Mode
SS
Single-chip mode upon start-
ing after reset. Each mode
can be selected by changing
the processor mode bits by
software.
Microprocessor mode upon
starting after reset.
pin’s input levels and proces-
Description
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