參數(shù)資料
型號(hào)： M34551M4-XXXFP
元件分類： 微控制器/微處理器
英文描述： 4-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP48
封裝： 7 X 10 MM, 0.65 MM PITCH, PLASTIC, QFP-48
文件頁(yè)數(shù)： 70/71頁(yè)
文件大?。?/td> 966K
代理商： M34551M4-XXXFP
5
MITSUBISHI MICROCOMPUTERS
4551 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for
INFRARED REMOTE CONTROL TRANSMITTER
MULTIFUNCTION
Notes 1: Pins except above have just single function.
2: The port D5 is the output port and ports P20–P23 are the input ports.
CONNECTIONS OF UNUSED PINS
Connection
Connect to VSS, or set the output latch to
“0” and open.
Select ports D6 and D7 and connect to VSS,
or set the output latch to “0” and open.
Select port P2 and connect to VSS, or select
the segment output function and open.
Connection
Open
Set the output latch to “1” and open.
Open or connect to VSS (Note)
Pin
CARR
SEG0–SEG15
COM0–COM3
P00–P03
P10–P13
Pin
D0–D4
D5/INT
D6/XCIN
D7/XCOUT
P2 0 / SEG 16 –P2 3 /
SEG19
Pin
D5
D6
D7
P20
P21
P22
P23
Multifunction
INT
XCIN
XCOUT
SEG16
SEG17
SEG18
SEG19
Multifunction
D5
D6
D7
P20
P21
P22
P23
Pin
INT
XCIN
XCOUT
SEG16
SEG17
SEG18
SEG19
PORT FUNCTION
Port
Port D
Port P0
Port P1
Port P2
Control
bits
1
4
Control
instructions
SD
RD
CLD
OP0A
IAP0
OP1A
IAP1
IAP2
Control
registers
MR
PU0
Output structure
N-channel open-drain
Input/
Output
(8)
I/O
(4)
I/O
(4)
Input
(4)
Remark
Pull-up functions
Key-on wakeup functions
Pull-up functions
(programmable)
Key-on wakeup functions
(programmable)
Pin
D0–D4, D5/INT,
D6/XCIN,
D7/XCOUT
P00–P03
P10–P13
P20/SEG16–
P23/SEG19
Note: In order to connect ports P10–P13 to VSS, turn off their pull-up transistors (Pull-up control register PU0i=“0”) by software. In
order to make these pins open, turn on their pull-up transistors (register PU0i=“1”) by software, or turn off their pull-up
transistors (register PU0i=“0”) and set the output latch to “0” (i = 0, 1, 2, or 3).
Be sure to select the key-on wakeup function and the pull-up function with every one port.
(Note in order to set the output latch to “0” and make pins open)
After system is released from reset, a port is in a high-impedance state until the output latch of the port is set to “0” by software.
Accordingly, the voltage level of pins is undefined and the excess of the supply current may occur.
To set the output latch periodically is recommended because the value of output latch may change by noise or a program run away
(caused by noise).
(Note in order to connect unused pins to VSS or VDD)
To avoid noise, connect the unused pins to VSS or VDD at the shortest distance using a thick wire.
相關(guān)PDF資料
PDF描述
M34552G8FP 4-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PQFP48
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M34551M8 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:4-BIT SINGLE-CHIP MICROCOMPUTER
M34552G8FP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
M34552G8HFP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
M34552M4H-XXXFP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
M34552M4-XXXFP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
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