參數(shù)資料
型號(hào)： M37733S4BFP
元件分類： 微控制器/微處理器
英文描述： 16-BIT, 25 MHz, MICROCONTROLLER, PQFP80
封裝： 14 X 20 MM, 0.80 MM PITCH, PLASTIC, QFP-80
文件頁(yè)數(shù)： 33/37頁(yè)
文件大?。?/td> 833K
代理商： M37733S4BFP
4
MITSUBISHI MICROCOMPUTERS
M37733S4BFP
16-BIT CMOS MICROCOMPUTER
New
product
PIN DESCRIPTION
XIN
Clock input
Input
XOUT
Clock output
Output
Pin
Name
Input/Output
Functions
Vcc,
Power source
Apply 5 V ± 10 % to Vcc and 0 V to Vss.
Vss
CNVss
CNVss input
Input
Connect to Vcc.
_____
RESET
Reset input
Input
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 XIN and XOUT. When an external clock is used, the clock source should be
connected to the XIN pin, and the XOUT pin should be left open.
_
E
Enable output
Output
_
When output level of E signal is “L”, data/instruction read or data write is performed.
BYTE
Bus width
Input
This pin determines whether the external data bus has an 8-bit width or a 16-bit width.
selection input
The data bus has a 16-bit width when “L” signal is input and an 8-bit width when “H” signal
is input.
AVcc,
Analog power
Power source input pin for the A-D converter. Externally connect AVcc to Vcc and AVss to Vss.
AVss
source input
VREF
Reference
Input
This is reference voltage input pin for the A-D converter.
voltage input
P00/A0 –
Address (low-
Output
Address (A0 – A7) is output.
P07/A7
order) output
P10/A8/D8 – Address (middle
I/O
When the BYTE pin is set to “L” and external data bus has a 16-bit width, high-order data
P17/A15/D15 -order)
(D8 – D15) is input/output or an address (A8 – A15) is output. When the BYTE pin is “H” and an
output/data
external data bus has an 8-bit width, only address (A8 – A15) is output.
(high-order) I/O
P20/A16/D0 – Address (high-
I/O
Low-order data (D0 – D7) is input/output or an address (A16 – A23) is output.
P27/A23/D7
order)
output/data
(low-order) I/O
_
P30/R/W
Read/Write
Output
“H” indicates the read status and “L” indicates the write status.
output
___
P31/BHE
Byte high
Output
“L” is output when an odd-numbered address is accessed.
enable output
P32/ALE
Address latch
Output
This is used to retrieve only the address from address and data multiplex signal.
enable output
____
P33/HLDA
Hold acknow-
Output
This outputs “L” level when the microcomputer enters hold state after a hold request is accepted.
ledge output
____
HOLD
Hold request
Input
____
This is an input pin for HOLD request signal. The microcomputer enters into hold state while this
input
signal is “L”.
___
RDY
Ready input
Input
___
This is an input pin for RDY signal. The microcomputer enters into ready state while this signal is
“L”.
P42/
1
Clock output
Output
This pin outputs the clock
1
.
P43 – P47
I/O port P4
I/O
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.
P50 – P57
I/O port P5
I/O
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 (KI0 – KI3).
P60 – P67
I/O port P6
I/O
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 (INT0 – INT2) and input pins for timers B0 to B2. P67 also
functions as sub-clock
SUB
output pin.
P70 – P77
I/O port P7
I/O
In addition to having the same functions as port P4, these pins function as input pins for A-D
converter. P72 to P75 also function as I/O pins for UART2. Additionally, P76 and P77 have the
function as the output pin (XCOUT) and the input pin (XCIN) of the sub-clock (32 kHz) oscillation
circuit, respectively. When P76 and P77 are used as the XCOUT and XCIN pins, connect a resonator
or an oscillator between the both.
P80 – P87
I/O port P8
I/O
In addition to having the same functions as port P4, these pins also function as I/O pins for UART
0 and UART 1.
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