KS51840 SAMSUNG | Alldatasheet

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 3

Technical content

G ELECTRONICS S M S U N G ELECTRONICS S M S U N 1–1 ROM Size RAM Size Instruction Set Instruction Cycle Time Input Ports Output Ports Built-in Oscillator Built-in Power-on reset and auto reset circuit for generating reset pulse every 131072/Fxx(288ms at Fxx=455kHz) Four Transmission Frequencies Supply Voltage Power Consumption Operating temperature Package Type Oscillator Frequency divide select BLOCK DIAGRAM XI XO P2.1 - P2.6 P2-output Latch ALU & A L Decoder L SF P3 Output Register ( PR ) H 1 4 PB PA PC 3-Level Stack 4 6 MUX P3.0 - P3.3 4 P0.0 - P0.3 OSC ROM 64x16x8 bits DIV Fxx/12 (1/4) P2.0/REM Internal P2.0 Internal P2.13 Fxx/8 (1/2) Internal P2.9 and P2.10 RAM 16x2x4bits 4 P1.0 - P1.3 No carrier Auto ResetFxx/12 (1/3) Internal P2.12 HALT KS51840, 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 KS51840 microcontroller has been designed for use in small system control applications that require a low-power, cost-sensitive design solution. In addition, the KS51840 has been optimized for remote control transmitter.

DESCRIPTION

1,024 bytes 32 nibbles 39 instructions 13.2 µsec at Fxx=455 kHz Two 4-bit ports(24 pins)/One 4-bit port, one 2-bit ports(20 pins) One 4-bitport,Seven1-bitports(24pins)/One 4-bit port, Five1-bit ports(20pins) Crystal/Ceramic resonator Fxx/12 (1/4 duty), Fxx/12 (1/3 duty), Fxx/8 (1/2 duty), and no-carrier frequency Halt mode: 1 µA (maximum) Normal mode: 0.5 mA (typical) -20°C to 85°C

24 SOP, 20 DIP, 20 SOP

Mask Option= Fosc or Fosc/8

FEATURES

G ELECTRONICS S M S U N G ELECTRONICS S M S U N1–2 PIN CONFIGURATION (24 SOP) VSS XI XO P2.6 P0.0 P0.1 P0.2 P0.3 P1.0 P1.1 P1.2 P1.3 VDD P2.0/REM TEST P2.1 P2.2 P2.3 P2.4 P2.5 P3.0 P3.1 P3.2 P3.3 KS51840 (Top View) Symbols P0.0 - P0.3 P1.0 - P1.3 P2.0/REM P2.2 - P2.5 P2.1, P2.6 P3.0 - P3.3 TEST XI XO VDD VSS Pin No. 5, 6, 7, 8 9,10,11,12 20,19,18, 21,4 16,15,14,13 Type Input Input Output Output Output Input Input Output Functions NOTES: 1.The carrier can be selected by software as Fxx/12 (1/3 duty), Fxx/12 (1/4 duty), Fxx/8 (1/2 duty), or no-carrier frequency. 2.Package type can be selected as 24 SOP in the ordering sheet. PIN DESCRIPTION FOR 24 PINS I/O Circuit Type A A B C D C 4-bit input port when P2.13 is low 4-bit input port when P2.13 is high 1-bit individual output for remote carrier frequency 1-bit individual output port 4-bit parallel output port Input pin for test (Normally connected to VSS ) Oscillation clock input Oscillation clock output Power supply Ground (1)

G ELECTRONICS S M S U N G ELECTRONICS S M S U N 1–3 PIN CONFIGURATION (20 DIP, 20 SOP) VSS XI XO P0.0 P0.1 P0.2 P0.3 P1.0 P1.1 P3.3 VDD P2.0/REM TEST P2.1 P2.2 P2.3 P2.4 P3.0 P3.1 P3.2 KS51840 (Top View) PIN DESCRIPTION FOR 20 PINS Symbols P0.0 - P0.3 P1.0 - P1.1 P2.0/REM P2.2 - P2.4 P2.1 P3.0 - P3.3 TEST XI XO VDD VSS Pin No. 4, 5, 6, 7 8, 9 16,15, 13,12,11,10 Type Input Input Output Output Output Input Input Output Functions 4-bit input port when P2.13 is low 2-bit input port when P2.13 is high 1-bit individual output for remote carrier frequency 1-bit individual output port 4-bit parallel output port Input pin for test (Normally connected to VSS ) Oscillation clock input Oscillation clock output Power supply Ground NOTES: 1.The carrier can be selected by software as Fxx/12 (1/3 duty), Fxx/12 (1/4 duty), Fxx/8 (1/2 duty), or no-carrier frequency. 2.Package type can be selected as 20 DIP, or 20 SOP in the ordering sheet. I/O Circuit Type A A B C D C (1)