MSM6641E-xx

¡ 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 +70°C : 4096 words × 17 bits : 64 words × 4 bits : 16 µs : 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) C...