EM78P451S数据手册Elan中文资料规格书

描述 Description

The EM78P451S is an 8-bit microprocessor designed and developed with low-power, high speed CMOS technology. Its operational kernel is implemented with RISC-like architecture and is available in the mask ROM version. The one time programmable (OTP) version is flexible, both in mass production or engineering test stages. OTP provide users with unlimited volume with favorable price opportunities. This device is equipped with the Serial Peripheral Interface (SPI) function. The EM78P451S is very suitable for wired communication. Only 58 easy-to-learn instructions are needed and user’s program can be emulated with EMC In-Circuit Emulator (ICE).

特性 Features

• Operating voltage range: 2.3V~5.5V
• Operating temperature range: 0°C~70°C
• Crystal mode: DC~20MHz/2clks@5V; DC~8MHz/2clks@3V; DC~4MHz/2clks@2.3V
• RC mode: DC~4MHz/2clks@2.3V
• Less then 3 mA at 5V/4MHz
• Typically 10 µA at 3V/32KHz
• 4K x 13 bits on chip ROM
• Serial Peripheral Interface (SPI) available
• 11 special function registers
• 140 bytes on chip registers(SRAM, general purpose register)
• 5 bi-directional I/O ports
• 3 LED direct sinking pins with internal serial resistors
• Built-in RC oscillator with external serial resistor, ±10% variation
• Built-in power-on reset
• 5 level stacks for subroutine nesting
• 8-bit real time clock/counter (TCC) with selective signal sources, trigger edges, and overflow interrupt
• Two machine clocks or four machine clocks per instruction cycle
• Power down (Sleep) mode
• Programmable wake up from sleep circuit on I/O ports
• Programmable free running watchdog timer
• 32 programmable pull-high pins
• 2 programmable open-drain pins
• 2 programmable R-option pins
• 12 wake-up pins
• Four types of interrupts: External interrupt (/INT), SPI transmission completed interrupt, TCC overflow interrupt, Timer1 comparator match interrupt