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W79E648

Features: • 8-bit CMOS microcontroller• High speed architecture of 4 clocks/machine cycle runs up to 40 MHz• Instruction-set compatible with MCS-51• Seven 8-bit I/O Ports• One extra 4-bit I/O ports, chip select, reboot fuction• Three 16-bit Timers• 7 inter...

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SeekIC No. : 004545048 Detail

W79E648: Features: • 8-bit CMOS microcontroller• High speed architecture of 4 clocks/machine cycle runs up to 40 MHz• Instruction-set compatible with MCS-51• Seven 8-bit I/O PortsR...

W79E648 Data Sheet

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Part Number:
W79E648
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

• 8-bit CMOS microcontroller
• High speed architecture of 4 clocks/machine cycle runs up to 40 MHz
• Instruction-set compatible with MCS-51
• Seven 8-bit I/O Ports
• One extra 4-bit I/O ports, chip select, reboot fuction
• Three 16-bit Timers
• 7 interrupt sources with two levels of priority
• On-chip oscillator and clock circuitry
• One enhanced full duplex serial port
• Dual 64KB In-System Programmable Flash EPROM banks (AP Flash EPROM 0 and AP Flash EPROM 1)
• 4KB Auxiliary Flash EPROM for loader program (LD Flash EPROM)
• 256 bytes scratch-pad RAM
• 1 KB on-chip SRAM for MOVX instruction
• Programmable Watchdog Timer
• 6 channels of 8 bit PWM
• Software Reset
• Software programmable access cycle to external RAM/peripherals
• Code protection
• Packages:
− PLCC 68: W79E648X40PX


Pinout

Connection Diagram


Specifications

PARAMETER
SYMBOL
MIN.
MAX.
UNIT
DC Power Supply
VDD-VSS
-0.3
+7.0
V
Input Voltage
VIN
VSS -0.3
VDD +0.3
V
Operating Temperature
TA
0
+70
°C
Storage Temperature
TST
-55
+150
°C
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability of the device.


Description

The W79E648 is a fast 8051 compatible microcontroller with a redesigned processor core without wasted clock and memory cycles. As a result, it executes every 8051 instruction faster than the original 8051 for the same crystal speed. Typically, the instruction executing time of W79E648 is 1.5 to 3 times faster than that of traditional 8051, depending on the type of instruction. In general, the overall performance is about 2.5 times better than the original for the same crystal speed. Giving the same throughput with lower clock speed, power consumption has been improved. Consequently, the W79E648 is a fully static CMOS design; it can also be operated at a lower crystal clock. The W79E648 contains In-System Programmable (ISP) 128 KB bank-addressed Flash EPROM; 4KB auxiliary Flash EPROM for loader program; on-chip 1 KB MOVX SRAM; power saving modes.




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