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Semiconductor MSM6641/6641E-xx
Semiconductor Built-in Remote Control Transmission Circuit 4-Bit Microcontroller
MSM6641/6641E-xx
GENERAL DESCRIPTION
The MSM6641, powered by a single battery, is a 4-bit microcontroller fabricated in OKI's lowvoltage 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 Operating frequency Operating temperature * Memory space ROM RAM * Minimum instruction execution time * I/O port Input port : 1.5 V (MSM6641) 3.0 V (MSM6641E) : 1 MHz : -20 to +70C : 4096 words x 17 bits : 64 words x 4 bits : 16 s
: 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
BLOCK DIAGRAM
MSM6641/6641E-xx
226
RCOUT CARRIER GENERATOR RCCON RCWRHRCWRL FLAG ALU
D-Bus (4 bits)
RCDH RCDLRCHLRHRCHLRL
P5.0
STACK
XTSTP
PORT5 ADRS WDOG1 WDOG0 WATCHDOG TIMER PROGRAM ROM 4096 17 bits ADDER WORK PROGRAM COUNTER PAGE
D-Bus (4 bits)
PORT4 INSTRUCTION REG(IR)
D-Bus (4 bits)
RAM 64 4 bits
PORT3
HRTMR
P4.0 P4.1 P4.2 P4.3 P3.0 P3.1 P3.2 P3.3 P2.0 P1.0 P1.1 P1.2 P1.3 P0.0 P0.1 P0.2 P0.3 PCHZO PCHZX INSTRUCTION DECODER PORT CONTROL
XT
OSC
TIME BASE COUNTER
TMOUT SYSTEM CLOCK GENERATOR
Semiconductor
XTB
Semiconductor
MSM6641/6641E-xx
PIN CONFIGURATION (TOP VIEW)
P1.1 P1.0 P0.3 P0.2 P0.1 P0.0 RCOUT VDD XT
1 2 3 4 5 6 7 8 9
24 23 22 21 20 19 18 17 16 15 14 13
P1.2 P1.3 P2.0 P3.0 P3.1 P3.2 P3.3 P4.0 P4.1 P4.2 P4.3 P5.0
XTB 10 VSS 11 RESET 12
24-Pin Plastic SOP
227
MSM6641/6641E-xx
Semiconductor
PIN DESCRIPTIONS
Pin 8 11 9 10 7 12 Symbol VDD VSS XT XTB RCOUT RESET Type - - I O O I Description Power supply pin (1.5 V/3.0 V) Ground pin Oscillation input pin: a ceramic oscillator is connected. Oscillation output pin: a ceramic oscillator is connected. Remote control output pin: This pin outputs the remote control output set by the program. A "L" level is output at the time of reset. System reset input pin: when a "L" level is applied to this pin, the microcontroller's internal state is initialized and the program starts from ROM address 000H. 4-bit input port: normally used as the input of key matrix. A pull-down resistor or high impedance can be selected for each bit by the input pull-down control register (PCHZO) of PORT0. 4-bit input port: normally used as the input of key matrix. A pull-down resistor or high impedance for PORT1 can be selected by bit 0 of input pull-down control register (PCHZX) of PORTS1 and 2. 1-bit input port: normally used as the input of key matrix. A pull-down resistor or high impedance for P2.0 can be selected by bit 1 of input pull-down control register (PCHZX) of PORTS1 and 2. 4-bit output port: normally used as the key return signal source of key matrix.
6 5 4 3 2 1 24 23 22 21 20 19 18 17 16 15 14 13
PORT 0
P0.0 P0.1 P0.2 P0.3 P1.0 P1.1 P1.2 P1.3 P2.0 P3.0 P3.1 P3.2 P3.3 P4.0 P4.1 P4.2 P4.3 P5.0
I
PORT 1
I
PORT 2
I
PORT 3
O
PORT 4
O
4-bit output port: normally used as the key return signal source of key matrix.
PORT 5
O
1-bit output port: normally used as the key return signal source of key matrix.
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Semiconductor
MSM6641/6641E-xx
ABSOLUTE MAXIMUM RATINGS (MSM6641)
Parameter Power Supply Voltage Input Voltage Output Voltage Storage Temperature Symbol VDD VIN VO TSTG -- Ta=25C Condition 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)
VSS=0 V 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 Unit V C MHz
ELECTRICAL CHARACTERISTICS (MSM6641)
DC Characteristics
(VDD=1.5 V, VSS=0 V, fOSC=1 MHz, Ta=25C) 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 Condition At remote control output *1 During standby (XTSTP="1") -- VO=1.0 V VO=0.5 V VO=1.0 V VO=0.5 V VI=1.5 V, input state, with pull-down resistor VI=1.5 V/0 V, input state, without pull-down resistor VI=0 V, with pull-up resistor -- Min. Typ. Max. Unit Applied Pin -- -- -- 150 150 500 2 3.75 -- 75 1.2 -- 300 -- -- -- -- -- -- 7.5 -- 150 -- -- 600 1 1.2 -- -- -- -- 15 1 300 -- 0.3 mA mA V mA mA mA mA mA mA V -- -- -- PORT3 to PORT5 *2 RCOUT PORT0 to PORT2 *3 PORT0 to PORT2 *3 RESET All input 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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MSM6641/6641E-xx
Semiconductor
ABSOLUTE MAXIMUM RATINGS (MSM6641E)
VSS=0 V Parameter Power Supply Voltage Input Voltage Output Voltage Storage Temperature Symbol VDD VIN VO TSTG -- Condition Ta=25C Rating -0.3 to +6.0 -0.3 to V DD+0.3 -0.3 to VDD+0.3 -55 to +125 C Unit V
RECOMMENDED OPERATING CONDITIONS (MSM6641E)
VSS=0 V Parameter Power Supply Voltage Operating Temperature Oscillation Frequency Symbol VDD Top fOSC Condition -- -- -- Range +2.0 to +3.5 -20 to +70 0.9 to 1.1 Unit V C MHz
ELECTRICAL CHARACTERISTICS (MSM6641E)
DC Characteristics
(VDD=3.0 V, VSS=0 V, fOSC=1 MHz, Ta=25C) 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 Condition At remote control output *1 During standby (XTSTP="1") -- VO=2.5 V VO=0.5 V VO=2.5 V VO=0.5 V VI=3.0 V, input state, with pull-down resistor Min. Typ. Max. Unit Applied Pin -- -- -- 500 500 1.5 6 25 1 -- -- -- -- -- -- 50 -- 300 -- -- 2 1 2.0 -- -- -- -- 100 1 600 -- 0.5 mA mA V mA mA mA mA mA V -- -- -- PORT3 to PORT5 *2 RCOUT PORT0 to PORT2 *3 PORT0 to PORT2 *3 RESET All input pins
VI=3.0 V/0 V, input state, -- without pull-down resistor VI=0 V, with pull-up 150 resistor 2.5 -- --
*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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