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M34280M1 Datasheet(Fiches technique) 3 Page - Mitsubishi Electric Semiconductor

Numéro de pièce M34280M1
Description  SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for INFRARED REMOTE CONTROL TRANSMITTERS
Télécharger  47 Pages
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Fabricant  MITSUBISHI [Mitsubishi Electric Semiconductor]
Site Internet  http://www.mitsubishichips.com
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MITSUBISHI
ELECTRIC
3
MITSUBISHI MICROCOMPUTERS
4280 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for INFRARED REMOTE CONTROL TRANSMITTERS
PERFORMANCE OVERVIEW
Function
62
8.0
µs (at 4.0 MHz system clock frequency)
(f(XIN) = 4.0 MHz, system clock = f(XIN)/8, VDD = 3 V)
1024 words ! 9 bits
32 words ! 4 bits
Seven independent output ports
1-bit I/O port with the pull-down function
3-bit input port with the pull-down function
2-bit output port (E0, E1)
4-bit I/O port with the pull-down function
1-bit output port; CMOS output
8-bit timer with a reload register
4 levels (However, only 3 levels can be used when the TABP p instruction is executed)
CMOS silicon gate
20-pin plastic molded SOP (20P2N-A)/SSOP (20P2E/F-A)
–20
°C to 85 °C
1.8 V to 3.6 V
400
µA
(f(XIN) = 4.0 MHz, system clock = f(XIN)/8, VDD = 3 V)
0.1
µA (at room temperature, VDD = 3 V)
Parameter
Number of basic instructions
Minimum instruction execution time
Memory sizes
Input/Output
ports
Timer 1
Subroutine nesting
Device structure
Package
Operating temperature range
Supply voltage
Power
dissipation
(typical value)
ROM
RAM
D0–D6
D7
E0–E2
E0, E1
G0–G3
CARR
Active mode
RAM back-up mode
M34280M1/
E1
Output
I/O
Input
Output
I/O
Output
PIN DESCRIPTION
Name
Power supply
Ground
System clock input
System clock output
Output port D
I/O port D
I/O port E
I/O port G
Carrier wave output
for remote control
Input/Output
Input
Output
Output
I/O
Output
Input
I/O
Output
Function
Connected to a plus power supply.
Connected to a 0 V power supply.
I/O pins of the system clock generating circuit. Connect a ceramic resonator
between pins XIN and XOUT. The feedback resistor is built-in between pins XIN
and XOUT.
Each pin of port D has an independent 1-bit wide output function. The output
structure is P-channel open-drain.
1-bit I/O port. For input use, turn on the built-in pull-down transistor and set the
latch of the specified bit to “0.” In addition, key-on wakeup function using “H”
level sense becomes valid. The output structure is P-channel open-drain.
2-bit (E0, E1) output port. The output structure is P-channel open-drain.
3-bit input port. For input use (E0, E1), turn on the built-in pull-down transistor and
set the latch of the specified bit to “0.” In addition, key-on wakeup function using
“H” level sense becomes valid. Port E2 has an input-only port and has a key-on
wakeup function using “H” level sense and pull-down transistor.
4-bit I/O port. For input use, set the latch of the specified bit to “0.” The output
structure is P-channel open-drain. Port G has a key-on wakeup function using
“H” level sense and pull-down transistor.
Carrier wave output pin for remote control. The output structure is CMOS circuit.
Pin
VDD
VSS
XIN
XOUT
D0–D6
D7
E0–E2
G0–G3
CARR




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