S3C1850 - Samsung semiconductor

S3C1850 4-bit single-chip CMOS microcontroller

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 .

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
• Two 4-bit ports (24 pins)/one 4-bit port, one 2-bit ports (20 pins) Operating temperature
•
  – 20 °C to 85 °C Package Type Output Ports
• One 4-bit port, seven 1-bit .