产品导览

特征

• Operating voltage range: 
  * 2.1V ~ 5.5V at 0°C ~ 70°C 
  * 2.3V ~ 5.5V at 40°C ~ 85°C
• Operating frequency range (base on 2 clocks ): 
  * Crystal mode: DC ~ 20MHz at 5.0V, DC ~ 8MHz at 3.0V, DC ~ 4MHz at 2.1V 
  * ERC mode: DC ~ 4MHz at 5.0 ~ 2.1V 
  * IRC mode: 4 choices of frequencies available; I.e., 8M, 4M, 1M, & 455KHz
• IRC mode: 
  * All these four main frequencies can be trimmed by programming with four calibrated bits in the ICE159N Simulator. 
     OTP is auto trimmed by DWTR. 
  * Temperature, Voltage, and Process changes will influence the frequency drift 
  * Frequency deviation is only ±4.5% after auto trimming (based on Vdd=5V,Ta=25°C)
• Fast set-up time only requires about 2ms in high XTAL and 32CLKS in IRC mode from wake up to operating mode
• Low power consumption: 
  * Less then 2mA at 5V/4MHz 
  * Typically 20μA at 3V/32kHz 
  * Typically 1μA during Sleep mode
• 1K x 13 bits on chip ROM
• One security register to prevent intrusion of OTP memory codes
• One configuration register to accommodate user's requirements
• 48 x 8 bits on chip registers (SRAM, general purpose register)
• 2 bi-directional I/O ports
• 5 level stacks for subroutine nesting
• 8-bit real time clock/counter (TCC) with selective signal sources, trigger edges, and overflow interrupt
• Two clocks per instruction cycle
• Power down (SLEEP) mode
• Three available interruptions: 
  * TCC overflow interrupt 
  * Input-port status changed interrupt (wake up from Sleep mode) 
  * External interrupt
• Programmable free running watchdog timer
• 8 programmable pull-high pins
• 8 programmable pull-down pins
• 8 programmable open-drain pins
• 2 programmable R-option pins
• Package types: 
  *14-pin DIP 300mil : EM78P154NP 
  * 14-pin SOP 150mil : EM78P154NM
  * 18-pin DIP 300mil : EM78P159NP 
  *18-pin SOP 300mil : EM78P159NM