8-bit MCU Series (80C51-based)

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 W79E633A40PL up to 20MHz 3.0V ~ 5.5V PLCC44
Other Files	N/A
Development Tools	N/A
Others	N/A