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Número de pieza MSM6641
Descripción Built-in Remote Control Transmission Circuit 4-Bit Microcontroller
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¡¡ SemicondSuectomr iconductor
MSM6641/6641E-xx
MSM6641/6641E-xx
Built-in Remote Control Transmission Circuit 4-Bit Microcontroller
GENERAL DESCRIPTION
The MSM6641, powered by a single battery, is a 4-bit microcontroller fabricated in OKI’s low-
voltage CMOS technology. A remote-control output generator built into this device provides
remote-control output.
The MSM6641 is best suited to remote-control applications.
FEATURES
• Operating range
Operating voltage
: 1.5 V (MSM6641)
3.0 V (MSM6641E)
Operating frequency
: 1 MHz
Operating temperature
: –20 to +70°C
• Memory space
ROM
: 4096 words × 17 bits
RAM
: 64 words × 4 bits
• Minimum instruction execution time : 16 µs
• I/O port
Input port
: 2 ports ¥ 4 bits
1 port ¥ 1 bit
Output port
: 2 ports ¥ 4 bits
1 port ¥ 1 bit
• Remote-control output port
:1
The remote-control output circuit consists of a carrier generator, a guide pulse and data
pulse generator, and an output waveform controller.
The remote control output can be provided by setting the control registers.
• Key-On Wake-Up function
Oscillation can be stopped to turn off microcontroller operation.
Application of predetermined input levels to the input ports turns on oscillation and
microcontroller operation.
• Halt release timers
:4
Timer frequencies are selectable.
• Watchdog timers
:2
• Clock
: 1 MHz ceralock resonator
• Power supply voltage
: 1.5 V/3.0 V (mask option)
• Package:
24-pin plastic SOP (SOP24-P-430-K) (Product name : MSM6641-¥¥GS-K, MSM6641E-xxGS-K)
Chip
¥¥ indicates the code number.
225

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MSM6641 pdf
¡ Semiconductor
ABSOLUTE MAXIMUM RATINGS (MSM6641)
Parameter
Power Supply Voltage
Input Voltage
Output Voltage
Storage Temperature
Symbol
VDD
VIN
VO
TSTG
Condition
Ta=25°C
MSM6641/6641E-xx
Rating
–0.3 to +6.0
–0.3 to V DD+0.3
–0.3 to VDD+0.3
–55 to +125
VSS=0 V
Unit
V
°C
RECOMMENDED OPERATING CONDITIONS (MSM6641)
Parameter
Power Supply Voltage
Operating Temperature
Oscillation Frequency
Symbol
VDD
Top
fOSC
Condition
Range
+1.2 to +3.5
–20 to +70
0.9 to 1.1
VSS=0 V
Unit
V
°C
MHz
ELECTRICAL CHARACTERISTICS (MSM6641)
DC Characteristics
Parameter
Operating Current
Consumption
Static Current Consumption
Oscillation Start Voltage
Output Current 1
Output Current 2
Input Current 1
Input Leakage Current
Input Current 2
Input Voltage
Symbol
IDD
IDDS
VOSC
–IOH1
IOL1
–IOH2
IOL2
IIH1
| IIL |
–IIL2
VIH
VIL
(VDD=1.5 V, VSS=0 V, fOSC=1 MHz, Ta=25°C)
Condition
Min. Typ. Max. Unit Applied Pin
At remote control output
*1 — 300 600 mA
During standby
(XTSTP="1")
— — 1 mA
— — 1.2 V
VO=1.0 V
VO=0.5 V
VO=1.0 V
VO=0.5 V
150 —
150 —
500 —
2—
mA
mA
— mA
PORT3 to
PORT5 *2
RCOUT
VI=1.5 V, input state,
with pull-down resistor
3.75 7.5
15
mA
PORT0 to
PORT2 *3
VI=1.5 V/0 V, input state, — — 1 mA PORT0 to
without pull-down resistor
PORT2 *3
VI=0 V, with pull-up
resistor
75 150 300 mA RESET
1.2 — —
All input
V
— — 0.3
pins
*1 The frequency is 333 kHz, in carrier-through state
*2 PORT3=P3.0 to P3.3, PORT4=P4.0 to P4.3, PORT5=P5.0
*3 PORT0=P0.0 to P0.3, PORT1=P1.0 to P1.3, PORT2=P2.0
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