EM78P468NBQ EMC [ELAN Microelectronics Corp], EM78P468NBQ Datasheet - Page 5

• Manufacturer Part Number: EM78P468NBQ
• Description: 8-BIT Microcontroller
• Manufacturer: EMC [ELAN Microelectronics Corp]

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Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
GENERAL DESCRIPTION
FEATURES
2.1 CPU
This LSI is an 8-bit RISC type microprocessor with high speed CMOS technology and
low power consumption. Integrated onto a single chip are on chip watchdog timer (WDT),
Data RAM, ROM, programmable real time clock counter, internal/external interrupt,
power down mode, LCD driver, infrared transmitter function, and tri-state I/O. The
EM78P468N provides multi-protection bits to protect against intrusion of user’s code in
the OTP memory and a seven option bits to accommodate user’s requirements. It also
provides an especial 13 bits customer ID option.
With its OTP-ROM feature, this LSI offers a convenient way of developing and verifying
user’s programs. Moreover, user developed code can be easily programmed with the
ELAN writer.
Operating voltage and temperature range:
Operation speed: DC ~ 10MHz clock input.
Dual clock operation
Totally 272 bytes SRAM
4K*13 bits OTP - ROM (One Time Programmable - Read Only Memory)
Up to 28 bi-directional tri-state I/O ports
8-level stack for subroutine nesting
8-bit real time clock/counter (TCC)
One infrared transmitter/PWM generator function
Commercial: 2.2V ~ 5.5 V. (at 0℃~+70℃)
Industrial: 2.5V ~ 5.5 V. / (at -40℃~+85℃)
High frequency oscillator can select among Crystal, RC, or PLL (phase lock
loop)
Low frequency oscillator can select between Crystal or RC mode
144 bytes general purpose register
128 bytes on chip data RAM
Typically, 12 bi-directional tri-state I/O ports.
16 bi-directional tri-state I/O ports shared with LCD segment output pin.
8-BIT Microcontroller
EM78P468N
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