The EM78P259N and EM78P260N are 8-bit microprocessor designed and developed with low-power, high-speed CMOS technology. The devices in this series have on-chip 2K x 13-bit Electrical One Time Programmable Read Only Memory (OTP-ROM). It provides Protection bits to prevent intrusion of user's code in the OTP memory as well as from unwanted external accesses. Three Code Option bits are also available to meet userss application requirements.

With its enhanced OTP-ROM features, the EM78P259N and EM78P260N provide a convenient way of developing and verifying user's programs. Moreover, this OTP devices offer the advantages of easy and effective program updates, using development and programming tools. User can avail of the ELAN Writer to easily program his development code.

Features

• Operating voltage range:
  * 2.3V~5.5V base on 0°C ~ 70°C (commercial)
  * 2.5V~5.5V base on –40°C ~ 85°C (industrial)
• Operating frequency range (base on 2 clocks):
  * Crystal mode: DC ~ 20MHz/2clks, 5V; DC ~ 8MHz/2clks, 3V
  * ERC mode: DC ~ 4MHz/2clks, 5V; DC ~ 4MHz/2clks, 3V
  * IRC mode: 4MHz at 2.3~5.5V
     * Process deviation: Typ. ±3%, max. ±5%
     * Temperature deviation: ±10% (-40°C ~ 85°C)
• Low power consumption:
  * Less than 1.9 mA at 5V/4MHz
  * 15 μA Typ. At 3V/32kHz
  * 1 μA Typ. During sleep mode
• Built-in RC oscillator 4MHz, 8MHz,1MHz, 455kHz (auto calibration)
• Programmable WDT time (4.5ms: 18ms)
• Independent Programmable WDT prescaler
• One configuration register to match user's requirements, and user's ID code for customer use is provided
• 80 x 8 on-chip registers (SRAM, general purpose register)
• 2K x 13 on-chip ROM
• Bidirectional I/O ports
• 8-level stacks for subroutine nesting
• 8-bit real time clock/counter (TCC) with selective signal sources, trigger edges, and overflow interrupt
• 8-bit real time clock/counter (TCCA, TCCC) and 16-bit real time clock/counter (TCCB) with selective signal sources, trigger edges, and overflow interrupt
• One pair of comparators (can act as an OP)
• 4-bit multi-channel Analog-to-Digital Converter with 12-bit resolution
• Easily-implemented IR (Infrared remote control) application circuit
• Power down (Sleep) mode
• Six interrupt sources:
  * TCC, TCCA, TCCB, and TCCC overflow interrupt
  * Input-port status change interrupt (wake-up from sleep mode)
  * External interrupt
  * Comparators status change interrupt
  * IR/PWM interrupt
  * ADC completion interrupt
• Programmable free running watchdog timer
• 8 programmable pull-high I/O pins
• 8 programmable open-drain I/O pins
• 8 programmable pull-down I/O pins.
• Two or Four clocks per instruction cycle
• Package types:
  * 18-pin DIP 300mil: EM78P259NP
  * 18-pin SOP 300mil: EM78P259NM
  * 20-pin DIP 300mil: EM78P260NP
  * 20-pin SOP 300mil: EM78P260NM
  * 20-pin SSOP 209mil: EM78P260NKM
• Power-on voltage detector available (2.0V ± 0.1V)