80C51 Microcontroller - 4T

Part No. W79E633A/W79L633A
Datasheet W79E633A_W79L633A.pdf
Description The W79E633 is a fast, 8051/52-compatible microcontroller with a redesigned processor core that eliminates wasted clock and memory cycles. Typically, the W79E633 executes instructions 1.5 to 3 times faster than that of the traditional 8051/52, depending on the type of instruction, and the overall performance is about 2.5 times better at the same crystal speed. As a result, with the fully-static CMOS design, the W79E633 can accomplish the same throughput with a lower clock speed, reducing power consumption.
The W79E633 provides 256 bytes of on-chip RAM; 1-KB of auxiliary RAM; four 8-bit, bi-directional and bit-addressable I/O ports; an additional 4-bit port P4; three 16-bit timer/counters; an UART serial port, 2 channels of I²C with master/slave capability and 4 channels of 10-bit ADC. These peripherals are all supported by ten interrupt sources with 2 levels of priority.
The W79E633 contains a 128-KB Flash EPROM whose contents may be updated in-system by a loader program stored in an auxiliary, 4-KB Flash EPROM. Once the contents are confirmed, it can be protected for security.
Features
  • Fully-static-design 8-bit Turbo 51 CMOS microcontroller up to 40MHz
  • 128-KB of in-system-programmable Flash EPROM (AP Flash EPROM)
  • 4-KB of Auxiliary Flash EPROM for the loader program (LD Flash EPROM)
  • 1-KB auxiliary RAM, software-selectable, accessed by MOVX instruction
  • 256 bytes of scratch-pad RAM
  • Four 8-bit bi-directional ports; Port 0 has internal pull-up resisters enabled by software.
  • All pins with Schmitt trigger inputs
  • One 4-bit multipurpose I/O port4 with Chips select(CS) and boot function
  • Three 16-bit timers
  • 6 channel of 8-bit PWM
  • One enhanced full-duplex UART with framing-error detection and automatic address recognition
  • 2-channels of I²C with master/slave capability
  • 10-bit ADC with 4-channel inputs
  • Software programmable access cycle to external RAM/peripherals
  • 10 interrupt sources with two levels of priority
  • Software reset function
  • Optional H/L state of ALE/PSEN during power down mode
  • Built-in power management
  • Code protection
  • Development tool
    — JTAG ICE(In Circuit Emulator) tool
Diagram N/A
Package
DEVICE
OPERATING FREQUENCY
OPERATING VOLTAGE
PACKAGE
LEAD FREE(ROHS)
W79E633A40PL
up to 40MHz
4.5V ~ 5.5V
PLCC44
W79L633A40PL
up to 25MHz
3.0V ~ 5.5V
PLCC44
Other Files N/A
Development Tools N/A
Others N/A

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