EM78P809N数据手册Elan中文资料规格书

描述 Description

The EM78P809N is an 8-bit microprocessor with low-power, high-speed CMOS technology and high noise immunity. It has a built-in 8k x 13-bits Electrical One Time Programmable Read Only Memory (OTP-ROM). It provides multi-protection bits to prevent intrusion of user's OTP memory codes. Seven Option bits are also available to meet user's requirements. With its OTP-ROM feature, the EM78P809N is able to offer a convenient way of developing and verifying user's programs. Moreover, user can take advantage of the ELAN Writer to easily program his development code.

特性 Features

• Operating voltage: 2.5V~5.5V
• Operating temperature range: -40°C~85°C
• Crystal mode: 1MHz~8MHz/2clks@4.5V, 1MHz~4MHz/2clks@2.5V
• RC mode: 1MHz~4MHz/2clks@2.5V
• Typically 0.8 µA during sleep mode
• 8K x 13 bits on-chip ROM
• Multi-security bits to prevent intrusion of OTP memory codes
• One configuration register accommodates user's requirements
• 144 bytes on-chip registers (SRAM, general purpose register)
• 4 bi-directional I/O ports (22 pins)
• 10 programmable pull-down I/O pins
• 10 programmable pull-high I/O pins
• 14 programmable high-sink current I/O pins
• 8 level stacks for subroutine nesting
• Two clocks per instruction cycle
• 15 interrupts (External: 4, Internal: 11)
• Programmable free running watchdog timer
• 16 bits Counter/Timer: TC2: Timer/Counter/Window
• 8 bits Timer/Counter: TCC: 8-bit real time clock/counter with overflow interrupt, TC3: Timer/Counter/Capture, TC4: Timer/Counter/ PWM (pulse width modulation)/PDO (Programmable divider output)
• Time Base Timer: (1Hz~16KHz at 8MHz)
• Key tone output: (1KHz~8KHz at 8MHz)
• Serial Peripheral Interface (SPI): Three-wire synchronous communication
• Universal asynchronous receiver transmitter interface (UART): Two wire asynchronous communication
• 8-channel Analog-to-Digital Converter with 10-bit resolution
• Operating mode:
• Sleep mode: Oscillation circuit turned off, CPU and Peripheral circuit halt
• Idle mode: Oscillation circuit turned on, CPU halt and Peripheral circuit in operation
• Normal mode: Oscillation circuit turned on, CPU and Peripheral circuit in operation
• 99.9% single instruction cycle commands