AT89C2051X2芯片破解

1 次 时间：2009-08-25 / 11:15:55 来源：夏生

AT89C2051X2  Features：

• Compatible with MCS®-51 Products
• 2K Bytes of Reprogrammable Flash Memory
– Endurance: 1,000 Write/Erase Cycles
• 2.7V to 6V Operating Range
• Fully Static Operation: 0 Hz to 16 MHz
• Two-level Program Memory Lock
• 128 x 8-bit Internal RAM
• 15 Programmable I/O Lines
• Two 16-bit Timer/Counters
• Six Interrupt Sources
• Programmable Serial UART Channel
• Direct LED Drive Outputs
• On-chip Analog Comparator
• Low-power Idle and Power-down Modes
• 6 Clocks per Machine Cycle Operation

AT89C2051X2Description

The AT89C2051x2 is a low-voltage, high-performance CMOS 8-bit microcontroller
with 2K bytes of Flash programmable memory. The device is manufactured using
Atmel’s high-density nonvolatile memory technology and is compatible with the industry-
standard MCS-51 instruction set. By combining a versatile 8-bit CPU with Flash on
a monolithic chip, the Atmel AT89C2051x2 is a powerful microcomputer which provides
a highly-flexible and cost-effective solution to many embedded control
applications.
The AT89C2051x2 provides the following standard features: 2K bytes of Flash, 128
bytes of RAM, 15 I/O lines, two 16-bit timer/counters, a five-vector, two-level interrupt
architecture, a full duplex serial port, a precision analog comparator, on-chip oscillator
and clock circuitry. In addition, the AT89C2051x2 is designed with static logic for operation
down to zero frequency and supports two software selectable power saving
modes. The Idle Mode stops the CPU while allowing the RAM, timer/counters, serial
port and interrupt system to continue functioning. The power-down mode saves the
RAM contents but freezes the oscillator disabling all other chip functions until the next
hardware reset.
Furthermore, the AT89C2051x2 executes one machine cycle in 6 clock cycles, providing
twice the speed of the AT89C2051 device. The user gains the flexibility to divide
input frequency crystals by 2 (using less expensive components), while keeping the
same CPU power. Alternatively, the user can save on power consumption while keeping
the same CPU power (oscillator power saving).

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