EM78P341N/342N/343N
8-Bit Microprocessor with OTP ROM
1 General Description
The EM78P341N, EM78P342N and EM78P343N are 8-bit microprocessors designed and developed with low-power and
high-speed CMOS technology. The series have an on-chip 2K×13-bit Electrical One Time Programmable Read Only
Memory (OTP-ROM). It provides a protection bit to prevent intrusion of user’s OTP memory code. Three Code option bits
are also available to meet user’s requirements.
With enhanced OTP-ROM features, the EM78P341N, EM78P342N and EM78P343N provide a convenient way of
developing and verifying user’s programs. Moreover, this OTP device offers the advantages of easy and effective
program updates, using development and programming tools. User can avail of the ELAN Writer to easily program his
development code.
2 Features
CPU configuration
• IRC mode:
Oscillation mode : 4MHz, 16MHz, 1MHz, 455kHz
Process deviation : Typ±3%, Max±5%
Temperature deviation : ±10% (-40°C~85°C )
• 2K×13 bits on chip ROM
• 80×8 bits on chip registers (SRAM)
• 8 level stacks for subroutine nesting
Peripheral configuration
• 4 programmable Level Voltage Detector (LVD) :
• Easily implemented IR (or infrared remote control)
4.5V, 4.0V, 3.3V, 2.2V
• 8-bit real time clock/counter (TCC) with selective signal
• 4 programmable Level Voltage Reset (LVR) : 4.0V,
sources, trigger edges, and overflow interrupt
3.5V, 2.7V, 1.8V (POR)
• 8-bit real time clock/counter (TCCA, TCCC) and 16-bit
real time clock/counter (TCCB) with selective signal
sources, trigger edges, and overflow interrupt
• Less than 1.5 mA at 5V/4MHz
• Typically 15 µA, at 3V/32kHz
• Typically 1 µA, during sleep mode
I/O port configuration
• 8-bit channels Analog-to-Digital Converter with 12-bit
resolution
• One pair of comparators or OP
• Three bidirectional I/O ports : P5, P6, P7
• 18 I/O pins
• Wake-up port : P5
Seven available interrupts:
• TCC, TCCA, TCCB, TCCC overflow interrupt
• Input-port status changed interrupt (wake-up from
• 8 Programmable pull-down I/O pins
• 16 programmable pull-high I/O pins
• 8 Programmable open-drain I/O pins
• External interrupt : P60
sleep mode)
• External interrupt
• ADC completion interrupt
• IR/PWM interrupt
• Comparator status change interrupt
• Low voltage detect (LVD) interrupt
Special features
Operating voltage range:
• Commercial version:
Operating voltage range: 1.9V~5.5V
• Industrial version:
• Programmable free running watchdog timer
Operating voltage range: 2.1V~5.5V
(4.5ms:18ms)
Operating temperature range: -40~85°C
• Power saving Sleep mode
• Selectable Oscillation mode
• Power-on voltage detector available (1.7 V± 0.1V)
Package type:
• Commercial version:
Operating voltage range: 0°C ~ 70°C
• Industrial version:
Operating voltage range: -40°C ~ 85°C
• 14-pin DIP 300mil
• 14-pin SOP 150mil
• 18-pin DIP 300mil
• 18-pin SOP 300mil
• 20-pin DIP 300mil
• 20-pin SOP 300mil
• 20-pin SSOP 209mil
:
EM78P341NP
EM78P341NM
EM78P342NP
EM78P342NM
EM78P343NP
EM78P343NM
EM78P343NKM
Operating frequency range:
Main clock
:
:
:
• Crystal mode:
DC ~ 20MHz/2clks @ 4V; DC ~16 MHz/2clks @ 3V
DC ~ 4MHz/2clks @ 1.9V
:
• ERC mode:
:
DC ~ 4MHz/2clks @ 5V; DC ~ 4MHz/2clks @ 3V
DC ~ 8MHz/2clks @ 3V; DC ~ 250ns inst. cycle @
3V
:
Product Specification (V1.0) 12.01.2006
(This specification is subject to change without further notice)
• 1
ELAN [ ELAN MICROELECTRONICS CORP ]
