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 mA at 5V/4MHz

*Typically 20 ∝A at 3V/32KHz

*Typically 1 ∝A 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

•7 programmable pull-down pins

•8 programmable open-drain pins

•2 programmable R-option pins

•Package types:

* 18 pin DIP 300mil

: EM78P156NP

 

* 18 pin SOP 300mil

: EM78P156NM

 

* 20 pin SSOP 209mil

: EM78P156NAS

 

 

 

This specification is subject to change without prior notice. 4

07.29.2004 (V1.2)