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EM78P468N Datasheet(PDF) 5 Page - ELAN Microelectronics Corp |
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EM78P468N Datasheet(HTML) 5 Page - ELAN Microelectronics Corp |
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5 / 82 page  EM78P468N 8-BIT Microcontroller Product Specification (V1.2) 03.15.2005 • 1 (This specification is subject to change without further notice) 1 GENERAL DESCRIPTION This LSI is an 8-bit RISC type microprocessor with high speed CMOS technology and low power consumption. Integrated onto a single chip are on chip watchdog timer (WDT), Data RAM, ROM, programmable real time clock counter, internal/external interrupt, power down mode, LCD driver, infrared transmitter function, and tri-state I/O. The EM78P468N provides multi-protection bits to protect against intrusion of user’s code in the OTP memory and a seven option bits to accommodate user’s requirements. It also provides an especial 13 bits customer ID option. With its OTP-ROM feature, this LSI offers a convenient way of developing and verifying user’s programs. Moreover, user developed code can be easily programmed with the ELAN writer. 2 FEATURES 2.1 CPU Operating voltage and temperature range: Commercial: 2.2V ~ 5.5 V. (at 0 ℃~+70℃) Industrial: 2.5V ~ 5.5 V. / (at -40 ℃~+85℃) Operation speed: DC ~ 10MHz clock input. Dual clock operation High frequency oscillator can select among Crystal, RC, or PLL (phase lock loop) Low frequency oscillator can select between Crystal or RC mode Totally 272 bytes SRAM 144 bytes general purpose register 128 bytes on chip data RAM 4K*13 bits OTP - ROM (One Time Programmable - Read Only Memory) Up to 28 bi-directional tri-state I/O ports Typically, 12 bi-directional tri-state I/O ports. 16 bi-directional tri-state I/O ports shared with LCD segment output pin. 8-level stack for subroutine nesting 8-bit real time clock/counter (TCC) One infrared transmitter/PWM generator function |
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