Specification
Overview
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General Description
The EM78P520N is an 8-bit RISC type microprocessor designed and developed with low-power and high-speed CMOS technology. It has on-chip Watchdog Timer (WDT), LCD Data RAM, ROM, programmable real time clock counter, internal / external interrupt, power down mode, 12 bits A/D Converter, UART, SPI, 8-channel LED driver, LCD driver and tri-state I/O.
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Features & Benefits
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CPU Configuration
- 8K x 13 bits on-chip ROM
- 272 bytes on-chip registers (SRAM)
- 8-level stacks for subroutine nesting
- Dual clock operation or PLL operation mode
- 4 programmable level voltage detector (LVD): .3.9V, 3.3V, 2.7V, 2.4V
- 4 programmable level voltage reset (LVR): 3.9V, 3.3V, 2.6V, 2.1V (POR)
- Less than 2.1 mA at 5V/4MHz
- Typically 22 μA at 3V/32kHz
- Typically 8 μA during Sleep mode
- Single instruction cycle commands
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I/O Port Configuration
- 6 bidirectional I/O ports: P7, P8, P9, PA, PB and PC
- 43 I/O pins
- 43 programmable pull-high I/O pins
- 39 programmable open-drain I/O pins
- 8-pin Direct Drive LED
- External interrupt: P74~P77, PB0~PB3, P82~P83
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Operating Voltage and Temperature Range
- 2.3V~5.5V at -40°C~85°C (Industrial Grade)
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Operating Frequency Range
- Crystal Mode: DC~20MHz/2 clks@5V; DC~8MHz/2 clks@3V; DC~4MHz/2 clks@2.3V
- ERC Mode: DC~2.2MHz/2 clks@2.3V
- PLL Mode: DC~16MHz/2 clks@2.3V
- Sub Clock: Crystal 32.768kHz , ERIC 33kHz (2.2MW)
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Peripheral Configuration
- Serial peripheral interface (SPI) available
- 8-bit real time clock/counter (TCC)
- 12-channels Analog-to-Digital Converter with 12-bit resolution in Vref mode
- LCD: 8x23 dots, bias (1/2, 1/3, 1/4), duty (static, 1/3, 1/4, 1/8)
- Two 8-bit timers
- 8-bit Timer 1, auto reload counter/timer which can be an interrupt source. Function mode; Timer, Toggle output, UART baud rate generator, Capture, PWM
- 8-bit Timer 2, auto reload timer which can be aninterrupt source. Function mode; Timer, SPI baud rate generator, PWM
- Two sets of 8 bits auto reload counter/timer which can be cascaded to one 16-bit counter/timer
- Universal asynchronous receiver / transmitter (UART) available
- Four programmable watch timer: 1.0 sec, 0.5 sec, 0.25sec, 3.91ms
- Four programmable buzzer output: 0.5kHz, 1kHz, 2kHz, 4kHz
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8 Interrupt Sources
- TCC overflow interrupt
- Ten external interrupts (wake-up from sleep mode)
- Two timer interrupts
- ADC completion interrupt
- Watch timer interrupt
- Two serial I/O interrupt
- Low voltage detect (LVD) interrupt
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Special features
- Programmable free running watchdog timer
- Power down mode (Sleep mode)
- Selectable oscillation mode
- High EFT immunity
- High ESD immunity
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Data Sheet
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Download File
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Package
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Download File
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Technical Information
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Website Link
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