- operating voltage range: 2.3v~5.5v.
- operating temperature range: -40°c~85°c.
- operating frequency range( base on 2 clocks)
* crystal mode: dc~20mhz at 5v, dc~8mhz at 3v, dc~4mhz at 2.3v.
* rc mode: dc~4mhz at 5v, dc~4mhz at 3v, dc~4mhz at 2.3v. - low power consumption:
* less then 2.2 ma at 5v/4mhz
* typically 30 µa, at 3v/32khz
* typically 1 µa, during sleep mode - 4k x 13 bits on chip rom
- one security register to prevent intrusion of otp memory codes
- one configuration register to accommodate user’s requirements
- 148× 8 bits on chip registers(sram, general purpose register)
- 3 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
- two available interruptions
* tcc overflow interrupt
* external interrupt - programmable free running watchdog timer
- 10 programmable pull-high pins
- 2 programmable open-drain pins
- 2 programmable r-option pins
- package types:
* 20 pin dip 300 mil : em78p447sdp
* 20 pin sop 300 mil : em78p447sdm
* 24 pin skinny dip 300 mil : em78p447sck
* 24 pin sop 300 mil : em78p447scm
* 28 pin dip 600 mil : em78p447sap
* 28 pin skinny dip 300 mil : em78p447sak
* 28 pin sop (soic) 300 mil : em78p447sam
* 28 pin ssop 209 mil : em78p447sas
* 32 pin dip 600 mil : em78p447sbp
* 32 pin sop (soic) 450 mil : em78p447sbwm - 99.9% single instruction cycle commands
- the transient point of system frequency between hxt and lxt is around 400khz
|