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S3C1850 - 4-bit single-chip CMOS microcontroller

Description

S3C1840, a 4-bit single-chip CMOS microcontroller, consists of the reliable SMCS-51 CPU core with on-chip ROM and RAM.

Eight input pins and 11 output pins provide the flexibility for various I/O requirements.

Features

  • ROM Size.
  • 1,024 bytes Four Transmission Frequencies.
  • fxx/12 (1/4 duty), fxx/12 (1/3 duty), fxx/8 (1/2 duty), and no-carrier frequency RAM Size.
  • 32 nibbles Supply Voltage.
  • 1.8 V-3.6 V (250 kHz ≤ f OSC ≤ 3.9 MHz) 2.2 V-3.6 V (3.9 MHz < fOSC ≤ 6 MHz) Instruction Set.
  • 39 instructions Power Consumption Instruction Cycle Time.
  • 13.2 µsec at fxx = 455 kHz.
  • Halt mode: 1 µA (maxium) Normal mode: 0.5 mA (typical) Input Ports.

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1. S3C1840 S3C1840 DESCRIPTION S3C1840, a 4-bit single-chip CMOS microcontroller, consists of the reliable SMCS-51 CPU core with on-chip ROM and RAM. Eight input pins and 11 output pins provide the flexibility for various I/O requirements. Auto reset circuit generates reset pulse every certain period, and every halt mode termination time. The S3C1840 microcontroller has been designed for use in small system control applications that require a low-power, cost sensitive design solution. In addition, the S3C1840 has been optimized for remote control transmitter. FEATURES ROM Size • 1,024 bytes Four Transmission Frequencies • fxx/12 (1/4 duty), fxx/12 (1/3 duty), fxx/8 (1/2 duty), and no-carrier frequency RAM Size • 32 nibbles Supply Voltage • 1.8 V-3.6 V (250 kHz ≤ f OSC ≤ 3.9 MHz) 2.
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