Product Summary

The W81E381D is a 8052-based USB device with 20 Kbytes flash memory. By integrating the USB1.1 transceiver, SIE, enhanced 8032 code, 20K Flash memory, extra 256 Byte RAM, power regulator, and general purpose I/O in single chip, the W81E381D creates a very low cost-effective solution that provides superior time-to-market advantages. The GPIO provides an easy interface to popular interface, such as ATAPI, EPP, RS232, MCU and DSP interface.

Parametrics

W81E381D absolute maximum ratings: (1)VCC Supply Current, Icc: TBD mA max; (2)VCC Suspend Current, Ipd: TBD uA max; (3)Logic Output High, VOH: 2.4V to VCC when IOH=-3mA; (4)Logic Output Low, VOL: 0.4 V max when IOL=3mA; (5)Logic Input High, VIH: 2.0 V min; (6)Logic Input Low, VIL: 0.8 V max; (7)Logic Input Leakage Current: 10μA when Ta=70℃.

Features

W81E381D features: (1)Fully compliant with the Universal Serial Bus Specification version 1.1; (2)Support USB Suspend and Resume operation for power-down standby; (3)Support USB remote wake up function; (4)Embedded microprocessor--8052 with extra 256Bytes RAM for data processing/storage, 20Kbytes of In-System Programmable Flash memory; (5)Internal generated 12MHz clock for 8052 use (the same as standard 8052 uses 24 MHz clock outside); (6)External and separated 8052 clock input supported; (7)6 clock per instruction 8052 core; (8)Flash support 512Byte erase block; (9)Software setting, 2KByte block programmable write protection for Flash memory; (10)6-Mhz crystal/oscillator input for both Full speed application with limited EMI affection; (11)Support smart card interface, including serial interface memory card, and SCIO & SCCLK pins could be programmed as GPIO pins by registers setting.

Diagrams

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
W81E381D
W81E381D
Other

Data Sheet
Negotiable 
Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
W81E381AD
W81E381AD
Other

Data Sheet
Negotiable 
W81E381D
W81E381D
Other

Data Sheet
Negotiable