參數(shù)資料
型號(hào)： M37920FGCHP
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)： 7/158頁(yè)
文件大?。?/td> 1261K
代理商： M37920FGCHP
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7
M37920FCCGP, M37920FCCHP
M37920FGCGP, M37920FGCHP
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER FLASH MEMORY VERSION
MITSUBISHI MICROCOMPUTERS
Vcc, Vss
MD0
MD1
RESET
X
IN
X
OUT
BYTE
AVcc,
AVss
V
REF
P0
0
–
P0
7
P1
0
–
P1
7
P2
0
–
P2
7
P3
0
–
P3
3
P4
0
–
P4
4
Power supply input
MD0
MD1
Reset input
Clock input
Clock output
External data bus width
select input
Analog power supply input
Reference voltage input
I/O port P0
I/O port P1
I/O port P2
I/O port P3
I/O port P4
—
Input
Input
Input
Input
Output
Input
—
Input
I/O
I/O
I/O
I/O
I/O
Apply 5 V±0.5 V to Vcc, and 0 V to Vss.
This pin controls the processor mode. Connect this pin to V
SS
for the single-chip
mode or memory expansion mode, and V
CC
for the microprocessor mode.
Connect this pin to Vss.
The microcomputer is reset when
“
L
”
level is applies to this pin.
These are input and output pins of the internal clock generating circuit. Connect a
ceramic or quartz- crystal resonator between the X
IN
and X
OUT
pins. When an
external clock is used, the clock source should be connected to the X
IN
pin, and the
X
OUT
pin should be left open.
This pin determines whether the external data bus has an 8-bit width or 16-bit width
for the memory expansion mode or microprocessor mode. The width is 16 bits when
“
L
”
signal is input, and 8 bits when
“
H
”
signal is input.
Power supply input pin for the A-D converter. Connect AVcc to Vcc, and AVss to Vss
externally.
This is the reference voltage input pin for the A-D converter.
I
In single-chip mode
Port P0 is an 8-bit I/O port. This port has an I/O direction register, and each pin
can be programmed for input or output. These pins enter the input mode at
reset.
I
In memory expansion and microprocessor modes
Address (A
16
–
A
23
) is output. In DRAM space is accessed, Multiplexed address
(MA
8
–
MA
11
) is output.
I
In single-chip mode
These pins have the same functions as port P0.
I
In memory expansion and microprocessor modes
The low-order 8 bits of data (D
0
–
D
7
) are input/output.
I
In single-chip mode or when 8-bit external data bus is used with
“
H
”
level applied
to pin BYTE in memory expansion or microprocessor mode
These pins have the same functions as port P0.
I
When the 16-bit external data bus is used with
“
L
”
level applied to pin BYTE in
memory expansion or microprocessor mode
The high-order 8 bits of data (D
8
–
D
15
) are input or output.
I
In single-chip mode
These pins have the same functions as port P0.
I
In memory expansion mode
P3
0
functions as an I/O port pin. According to the register setting, this pin funtions
as an output pin of RDY. P3
1
, P3
2
, P3
3
funtion as output pins of RD, BLW, BHW,
respectively.
I
In microprocessor mode
P3
0
functions as an input pin of RDY; and P3
1
, P3
2
, P3
3
function as output pins of
RD, BLW, BHW, respectively.
I
In single-chip mode
These pins have the same functions as port P0. P4
2
also funtions as pin TC.
I
In memory expansion mode
P4
0
–
P4
4
function as I/O port pins. According to the register setting, these pins
function as output pins or input pins of ALE,
φ
1
, TC, HOLD, HLDA, respectively.
I
In microprocessor mode
P4
0
and P4
1
function as outpout pins of ALE,
φ
1
. According to the register setting,
these pins also funtion as I/O port pins. P4
2
funtions as an I/O port pin. Accord-
ing to the register setting, this pin also funtions as pin TC. P4
3
functions as an in-
put pin of HOLD, and P4
4
functions as an output pin of HLDA.
PIN DESCRIPTION (MICROCOMPUTER MODE)
Functions
Input/
Output
Name
Pin
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