S3C1840 Datasheet - Samsung semiconductor

S3C1840 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 terminat.

S3C1840 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 Se

S3C1840_Samsungsemiconductor.pdf