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EM78P159NP

8-Bit Microcontroller with OTP ROM

ELAN Microelectronics 

EM78P159N

8-Bit Microcontrollerwith OTP ROM

„ Low power consumption:

• Less then 2mA at 5V/4MHz

• Typically 20μA at 3V/32kHz

• Typically 1μA during Sleep mode

„ 1K × 13 bits on chip ROM

„ One security register to prevent intrusion of OTP memory codes

„ One configuration register to accommodate 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

„ 8 programmable pull-down pins

„ 8 programmable open-drain pins

„ 2 programmable R-option pins

„ Package types:

• 18 pin DIP 300mil : EM78P159NP

• 18 pin SOP 300mil : EM78P159NM

• 20 pin SSOP 209mil : EM78P159NAS

• 20 pin SSOP 209mil : EM78P159NKM

„ 99.9% single instruction cycle commands

„ The transient point of system frequency between HXT and LXT is around 400kHz

2•

Product Specification (V1.0) 03.10.2006

(This specification is subject to change without further notice)

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