ATOM 1.0 Family(4-bit MCU with reduced 8051 architecture)
Download (Documentation Materials)

PRODUCT

Brief User's Manual (Eng)

Brief User's Manual (Kor)

User's Manual

GC49C501G0

24-SOIC

(Down)

(Down)

(Down)

20-SOIC

8-SPDIP

8-SOIC

GC41C501G0

24-SOIC

20-SOIC

8-SPDIP

8-SOIC
 
General Description

ATOM1.0 family is a group of 4-bit CMOS microcontroller, which consists of CPU, on-chip ROM and RAM. Its CPU core is newly designed with a subset of MCS-51 architecture for the convenience of application by users accustomed to 8051.

Although ATOM1.0 is a 4-bit MCU, it accesses program memory continuously like 8051. This is one of the outstanding features of ATOM1.0 because most of other 4-bit MCUs accesses program memory divided into pages. The drawback of paging is the requirement of careful attention to the crossing of page boundary during software development and the dead space near the page boundary.

CORERIVER offers not only the chips but also its user-friendly development tools such like 1) MDS (MCU Development System), 2) S/W generation and debugging tools including assembler, 3) Application system, and 4) ROM writer.

Application Areas
ATOM1.0 family has been designed for small system control applications that require a low-power, cost-sensitive design solution. ATOM1.0 is optimized for remote control transmitter, Toys, Games etc.
Features
  • CPU
    - 4-bit reduced 8051 architecture
    - Continuous program addressing, not paged.
    - 51 instructions including push, pop and logic inst.
    - Instruction cycle : fSYS/6
    - Multi-level subroutine nesting with RAM based stack.
  • On-chip Memories :
    - ROM : 1024 Bytes
    - EEPROM : 128 Bytes
    - RAM : 64 nibbles (including stack)
  • ISP (In system programming of FLASH)
  • I/O Ports
    - P0 : 4-bit parallel I/O (Open drain output)
    - P1 : 2-bit parallel I/O (Open drain output)
    - P2,3 : 4-bit parallel I/O (Open drain output)
  • REM output (Remote control transmitter)
    - Built-in Transistor for I.R. LED Drive
    - IOL = 300 mA (Max.) at VDD = 3V and VO = 0.4V
  • Carrier Pulse Generation : 7 types
  • Built-in Oscillator
    - Crystal/Ceramic resonator
    - 7.28 MHz precision internal oscillator
       Factory Calibrated to ± 3% at 2.1 ~ 3.3V
       Factory Calibrated to ± 1% at 2.5V
  • Built-in Reset
    - Power-on Reset, Low voltage Reset
    - WDT (Watch-Dog Timer) Reset
    - Clock switching reset
  • Power Management
    - Power-down (stop) mode
    - Release stop by input changes
    - Sleep mode
  • Power Consumption
    - Stop mode : £¼0.1uA (Typ.) at 2.0V, 1 uA (Max.) at 5.0V
    - Normal mode : 400 uA (Typ.) at 2.0V, F sys = 4 MHz

  • Operating frequency vs. voltage
    - Max. FOSC= 10 MHz (2.7 V ¡Â VDD ¡Â 5.5V)
    - Max. FOSC= 5 MHz (1.8 V ¡Â VDD ¡Â 2.7V)
  • Operating temperature : -40 ° C ~ 85 ° C

  • Package
    - 24-pin SOIC
    - 20-pin SOIC
    - 8-pin SOIC/SPDIP