M37733 MITSUBISHI [Mitsubishi Electric Semiconductor], M37733 Datasheet - Page 4

• Manufacturer Part Number: M37733
• Description: 16-BIT CMOS MICROCOMPUTER
• Manufacturer: MITSUBISHI [Mitsubishi Electric Semiconductor]

PIN DESCRIPTION
4
_
____
Vcc,
Vss
CNVss
_____
RESET
X
X
E
BYTE
AVcc,
AVss
V
P0
P0
P1
P1
P2
P2
P3
P3
P3
P3
HOLD
___
RDY
P4
P4
P5
P6
P7
P8
IN
OUT
REF
0
7
0
7
0
7
0
1
2
3
3
0
0
0
0
2
/A
/A
Pin
/A
/A
/A
/A
/R/
/
/ALE
/
/
____
– P4
– P5
– P6
– P7
– P8
___
BHE
HLDA
16
23
8
15
0
7
/D
/D
/D
W
_
/D
–
1
8
0
7
7
7
7
7
7
15
– Address (middle
– Address (high-
Power source
CNVss input
Reset input
Clock input
Clock output
Enable output
Bus width
selection input
Analog power
source input
Reference
voltage input
Address (low-
order) output
-order)
output/data
(high-order) I/O
order)
output/data
(low-order) I/O
Read/Write
output
Byte high
enable output
Address latch
enable output
Hold acknow-
ledge output
Hold request
input
Ready input
Clock output
I/O port P4
I/O port P5
I/O port P6
I/O port P7
I/O port P8
Name
Input/Output
Output
Output
Output
Output
Output
Output
Output
Output
Input
Input
Input
Input
Input
Input
Input
I/O
I/O
I/O
I/O
I/O
I/O
I/O
Apply 5 V ± 10 % to Vcc and 0 V to Vss.
Connect to Vcc.
When “L” level is applied to this pin, the microcomputer enters the reset state.
These are pins of main-clock generating circuit. Connect a ceramic resonator or a quartz-crystal
oscillator between X
connected to the X
When output level of
This pin determines whether the external data bus has an 8-bit width or a 16-bit width.
The data bus has a 16-bit width when “L” signal is input and an 8-bit width when “H” signal
is input.
Power source input pin for the A-D converter. Externally connect AVcc to Vcc and AVss to Vss.
This is reference voltage input pin for the A-D converter.
Address (A
When the BYTE pin is set to “L” and external data bus has a 16-bit width, high-order data
(D
external data bus has an 8-bit width, only address (A
Low-order data (D
“H” indicates the read status and “L” indicates the write status.
“L” is output when an odd-numbered address is accessed.
This is used to retrieve only the address from address and data multiplex signal.
This outputs “L” level when the microcomputer enters hold state after a hold request is accepted.
This is an input pin for
signal is “L”.
This is an input pin for
“L”.
This pin outputs the clock
These pins become a 5-bit I/O port. An I/O direction register is available so that each pin can be
programmed for input or output. These ports are in the input mode when reset.
In addition to having the same functions as port P4, these pins also function as I/O pins for timers
A0 to A3 and input pins for key input interrupt input (
In addition to having the same functions as port P4, these pins also function as I/O pins for timer
A4, input pins for external interrupt input (
functions as sub-clock
In addition to having the same functions as port P4, these pins function as input pins for A-D
converter. P7
function as the output pin (X
circuit, respectively. When P7
or an oscillator between the both.
In addition to having the same functions as port P4, these pins also function as I/O pins for UART
0 and UART 1.
8
– D
15
) is input/output or an address (A
0
– A
2
to P7
7
) is output.
0
IN
– D
IN
5
pin, and the X
_
E
also function as I/O pins for UART2. Additionally, P7
and X
____
HOLD
___
RDY
signal is “L”, data/instruction read or data write is performed.
7
) is input/output or an address (A
SUB
signal. The microcomputer enters into ready state while this signal is
COUT
OUT
request signal. The microcomputer enters into hold state while this
1
output pin.
6
.
and P7
. When an external clock is used, the clock source should be
) and the input pin (X
OUT
7
pin should be left open.
are used as the X
___
INT
8
– A
Functions
0
–
15
___
INT
) is output. When the BYTE pin is “H” and an
2
) and input pins for timers B0 to B2. P6
__
KI
8
MITSUBISHI MICROCOMPUTERS
CIN
0
– A
–
) of the sub-clock (32 kHz) oscillation
16
__
KI
15
COUT
16-BIT CMOS MICROCOMPUTER
3
) is output.
– A
).
23
and X
) is output.
M37733S4BFP
CIN
pins, connect a resonator
6
and P7
7
have the
7
also