EM78156N Datasheet | ELAN Microelectronics

DESCRIPTION EM78P156N is an 8-bit microprocessor designed and developed with low-power, high-speed CMOS technology.. It is equipped with 1K- 13-bits Electrical One Time Programmable Read Only Memory (OTP-ROM). It provides three PROTECTION bits to prevent user’s code in the OTP memory from being intruded. 8 OPTION bits are also available to meet user’s requirements. With its OTP-ROM feature , the EM78P156N is able to offer a convenient way of developing and verifying user’s programs. Moreover, user can take advantage of EMC Writer to easily program his development code. This specification is subject to change without prior notice. 07.29.2004 (V1.2) EM78P156N OTP ROM 2. FEATURES - Operating voltage range : 2.5V~5.5V - Operating temperature range: -40°C~85°C - Operating frequency rang (base on 2 clocks ): - Crystal mode: DC~20MHz at 5V, DC~8MHz at 3V, DC~4MHz at 2.5V. - ERC mode: DC~4MHz at 5V, DC~4MHz at 3V, DC~4MHz at 2.5V. - Low power consumption: - Less then 2 m A at 5V/4MHz - Typically 20 µA at 3V/32KHz - Typically 1 µA during sleep mode - 1K × 13 bits on chip ROM - One security register to prevent intrusion of OTP memory codes - One configuration register to acmodate user’s requirements - 48× 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 - 7 programmable pull-down pins - 8 programmable open-drain pins - 2 programmable R-option pins - Package types: - 18 pin DIP 300mil - 18 pin SOP 300mil - 20 pin SSOP 209mil : EM78P156NP : EM78P156NM : EM78P156NAS This specification is subject to change without prior...