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EM78267C Dataheets PDF



Part Number EM78267C
Manufacturers EMC
Logo EMC
Description 8-BIT MICRO-CONTROLLER
Datasheet EM78267C DatasheetEM78267C Datasheet (PDF)

DESCRIPTION EM78267/467A/B/C 8-BIT MICRO-CONTROLLER FOR TELECOM PRODUCT Preliminary The EM78267/467 A/B/C is an 8-bit microprocessor with low-power, high speed CMOS technology. Integrated onto a single chip are on-chip watchdog timer (WDT), RAM, ROM, programmable real time clock/counter, power down mode and bi-directional tri-state I/O ports. It can be developed as cordless phone or other applications. FEATURES • Operating voltage range: 2.5V~5.5V • Available in temperature range: 0°C~70°C .

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DESCRIPTION EM78267/467A/B/C 8-BIT MICRO-CONTROLLER FOR TELECOM PRODUCT Preliminary The EM78267/467 A/B/C is an 8-bit microprocessor with low-power, high speed CMOS technology. Integrated onto a single chip are on-chip watchdog timer (WDT), RAM, ROM, programmable real time clock/counter, power down mode and bi-directional tri-state I/O ports. It can be developed as cordless phone or other applications. FEATURES • Operating voltage range: 2.5V~5.5V • Available in temperature range: 0°C~70°C • Operating frequency range: Crystal Type: DC~20MHz at 5V DC~8MHz at 3V RC Type: DC~4MHz at 5V DC~4MHz at 3V • 2Kx13 on chip ROM (EM78267A/B/C) • 4Kx13 on chip ROM (EM78467A/B/C) • 9 special function registers • 148x8 general purpose registers (SRAM) • 3 bi-directional tri-state I/O ports (20 I/O pins for EM78267/467A) (24 I/O pins for EM78267/467B) (22 I/O pins for EM78267/467C) • 5 level stack for subroutine nesting • 8-bit real time clock/counter (TCC) with selective signal sources and trigger edges, and with overflow interrupt • Selectable oscillator options: XTAL1 type (High frequency) XTAL2 type (32.768KHz) RC type External clock input • Two oscillator periods per instruction cycle • Power down mode • Programmable wake up from sleep circuit on I/O ports • Programmable free running on-chip watchdog timer • Ten pull-up and wake-up pins • Two open-drain pins • Two R-option pins • Interrupt function available • 28 pin DIP, SOIC, SSOP (EM78267/467A) 28 pin SOIC (EM78267/467C) 32 pin DIP, SOIC (EM78267/467B) * This specification are subject to be changed without notice. 9.30.1997 1 PIN ASSIGNMENTS EM78267/467A/B/C 8-BIT MICRO-CONTROLLER FOR TELECOM PRODUCT Preliminary EM78267A EM78467A TCC VDD NC VSS /INT P50 P51 P52 P53 P60 P61 P62 P63 P64 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 /RESET 27 OSCI 26 OSCO 25 P77 24 P76 23 P75 22 P74 21 P73 20 P72 19 P71 18 P70 17 P67 16 P66 15 P65 DIP, SOIC EM78267A EM78467A VSS TCC VDD VDD P50 P51 P52 P53 P60 P61 P62 P63 P64 VSS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 /RESET 27 OSCI 26 OSCO 25 P77 24 P76 23 P75 22 P74 21 P73 20 P72 19 P71 18 P70 17 P67 16 P66 15 P65 SSOP EM78267B EM78467B P55 P54 TCC VDD NC VSS /INT P50 P51 P52 P53 P60 P61 P62 P63 P64 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 32 P56 31 P57 30 /RESET 29 OSCI 28 OSCO 27 P77 26 P76 25 P75 24 P74 23 P73 22 P72 21 P71 20 P70 19 P67 18 P66 17 P65 DIP, SOIC EM78267C EM78467C P55 P54 TCC VDD VSS P50 P51 P52 P53 P60 P61 P62 P63 P64 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 /RESET 27 OSCI 26 OSCO 25 P77 24 P76 23 P75 22 P74 21 P73 20 P72 19 P71 18 P70 17 P67 16 P66 15 P65 SOIC FUNCTIONAL BLOCK DIAGRAM OSCI OSCO /RESET TCC /INT Oscillator/Timing Control WDT Timer Control of sleep and wake-up on I/O ports R1(TCC) WDT Timeout Prescaler RAM R4 Interrupt Controller ROM Instruction register Instruction Decoder R2 Stack ALU R3 ACC P70 ~ P77 DATA & CONTROL BUS IOC7 R7 I/O PORT 7 IOC5 R5 I/O PORT 5 P50 ~ P57 IOC6 R6.


EM78267B EM78267C EM78467


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