MCS7703 MosChip, MCS7703 Datasheet
MCS7703
Related parts for MCS7703
MCS7703 Summary of contents
Page 1
... USB Bus. In addition, the MCS7703 contains a 3.3V regulator and operates in Bus-Powered mode. The MCS7703 uses a single 12 MHz crystal oscillator. This combination of features allows significant cost savings in system design along with straightforward implementation of Serial Port functionality into PC peripherals using the host’ ...
Page 2
... MCS7703 USB 1.1 to Single Serial Port DP USB Interface DM Serial Interface Engine XTAL1 PLL & Clock XTAL2 Generator TST Page 2 Block Diagram Descriptor Table FIFO FIFO GPIO & EEPROM Interface TX, nRTS, nDTR RX, nCTS, nDSR nRI, nCD GPIO 1/2 EEPROM Rev. 1.6 ...
Page 3
... RSTO GND 3.3V nDSR nCD nCTS nSHDN EECLK EESDA Rev. 1.6 28-Pin SSOP Package nRI MCS7703 USB 1.1 to Single Serial Port 28 XTAL2 27 XTAL1 26 TST 25 AGND 24 3.3VA 23 GPIO2 22 GPIO1 21 GND RESET 18 GND 17 VOUT ...
Page 4
... MCS7703 USB 1.1 to Single Serial Port Pin Name Pin Type TX 1 nDTR 2 nRTS 3 RSTO nRI 6 nDSR 9 nCD 10 nCTS 11 nSHDN 12 EECLK 13 I/O EESDA I/O VOUT 17 PWR RESET PWR GPIO1 22 I/O GPIO2 23 I/O AGND 25 PWR Page 4 O Serial Data Output. Data-Terminal-Ready signal set high (inactive) after a hardware reset or during internal loop-back mode ...
Page 5
... Test Mode is enabled. Low for normal operation. I Crystal oscillator or external clock input O Crystal oscillator output. See XTAL1 description. Power and Signal Ground. Analog 3.3V Power Supply Device Supply Input connected to VOUT pin when 5V supply is used. MCS7703 USB 1.1 to Single Serial Port Description Page 5 ...
Page 6
... The MCS7703 uses an optional external EEPROM to load Vendor Specific parameters. The EEPROM is connected through a convenient 2-wire I After Power-On Reset, the MCS7703 reads two Bytes from the EEPROM. If the two Bytes are equal to 9710 (hex) then it recognizes the EEPROM as being present and the next 8 Bytes are read. Otherwise the MCS7703 reverts to its default operating mode using default values ...
Page 7
... Shut Down the transceiver when USB Suspend is engaged (default). GPIO-1 Pin State Tri-Mode input (default Assign as GPIO pin (Default 00) (Default 00 RS-232 Serial mode (default Not Used 0 = Standard Serial Port (default 16-bit Serial Character mode. MCS7703 USB 1.1 to Single Serial Port Description Page 7 ...
Page 8
... MCS7703 USB 1.1 to Single Serial Port Device Control Register 1: Register Bit 0-1 GPIO_PMG DCR1 2-3 TX_PMG 4 Wakeup 5-7 Page 8 Name GPIO output current settings 6mA 01 = 8mA (default 10mA 11 = 12mA Transmit output current settings 6mA 01 = 8mA (default 10mA 11 = 12mA Remote Wakeup Enable USB Remote Wakeup (default). ...
Page 9
... Wakeup will trigger on DSR state change RX Wakeup Function Disabled (default Wakeup will trigger on RX state change Remote Wakeup Function Enable Remote Wakeup, disconnect signal Wakeup, MCS7703 issues Resume Signal (default) External RS-232 Three-State Control: RSTO 0 = Disabled (default Enabled nSHDN Pin Polarity: ...
Page 10
... MCS7703 USB 1.1 to Single Serial Port Absolute Maximum Ratings Supply Range Voltage At Any Pin Operating Temperature Storage Temperature Package Dissipation ESD Latch up DC Electrical Specifications Temp = 0° +70° C; Vcc = 3.3V ±10% unless otherwise specified. Symbol Parameter 5.0V Voltage Regulator Input Supply 3.3V Operating Supply Voltage ...
Page 11
... TYP c 28-Pin SSOP Package Dimensions Rev. 1.6 USB 1.1 to Single Serial Port MILLIMETERS SYMBOL MIN TYP MAX A1 0.05 0.21 A2 1.65 1.80 C 0.25 e 0.65 D 10.00 10.4 E 7.4 7.8 8.2 E1 5.2 5.4 L 0.55 0.75 0.95 MCS7703 INCHES MIN TYP MAX 0.020 0.08 0.650 0.708 0.026 3.93 4.09 2.05 2.12 Page 11 ...
Page 12
... MCS7703 USB 1.1 to Single Serial Port MosChip Semiconductor Technology, LTD products are not authorized for use as critical components in life support devices or systems. Life support devices are applications that may involve potential risks of death, personal injury or severe property or environmental damages. These critical components are semiconductor products whose failure to perform can be reasonably expected to cause the failure of the life support systems or device adversely impact its effectiveness or safety ...
Page 13
... Revision 1.1 1.2 1.3 Pin Name Correction on the 28-Pin SSOP Package 1.4 PL2303X and 6MHz Removed From Feature List 1.5 1.6 Rev. 1.6 USB 1.1 to Single Serial Port Revision History Changes Corrections AC/DC Characteristics Changes to Document Layout Corrected Block Diagram MCS7703 Date Feb-2004 Mar-2004 Mar-2004 Apr-2004 30-Nov-2005 12-Dec-2005 Page 13 ...