8-BIT MICRO-CONTROLLER
DESCRIPTION
EM78267/467A/B/C 8-BIT MICRO-CONTROLLER FOR TELECOM PRODUCT
Preliminary
The EM78267/467 A/B/C is an 8-bit ...
Description
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 pi...
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