MA100H

MA100 MEGAWIN | Alldatasheet

Document overview

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• PDF pages: 9

Technical content

Features

z Operating voltage from 4.35V to 5.5V z Universal Asynchronous Serial Receiver/Trans mitter (UART) to Universal Serial Bus (USB) Bridge z High efficient data transfer rate and low cost solution for UART-to-USB bridge, which has to connect 1200bps ~ 57.6Kbps UART device. z Integrated USB transceiver for Low speed USB 1.5Mbps Specification, Version 1.1 z Embedded 3.3 V voltage regulator for USB data signals z Built-in power-on-reset z Supports suspend/normal mode for the power management z 6 MHz external crystal or external ceramic resonator z Support optional extern al serial EEPROM for USB VID, PID, product re lated string and external setting z LEDs indicate the activity between USB and UART z USB PC driver is available for Microsoft Windows 98 SE/Me/2000/XP z Package: − Die form: MA100H − 28-SSOP: MA100L

The MA100 is a USB interface to a UART bridge controller, which allows high efficient data transfer rate between a UART device and a USB host. The MA100 is usually used in some existing devices with UART only, and work through it to provide easy connectivity between USB host and UART device. The MA100 will be connected up to 57.6k bps UART, and the USB PC software driver is also supported for the Microsoft Windows 98 SE/Me/2000/XP environment. MA100 will be very suitable for hand-held game, data bank, I-toy, and other products that need to download/upload data through the PC system. Pin Description PIN Name I/O Description TX O UART Transmit with an open-drain RX I UART Receive with an open drain BS0~2 I Test pin LBRS I Low baud rate select pin USB_LED O LED for USB indication TX_LED O LED for transmit indication RX_LED O LED for receive indication P0 O Output pin -RST I Reset pin, low active TO0~1 I Time-out between RX and USB EE_A0 O External EEPROM A0 address pin EE_A1 O External EEPROM A1 address pin EE_SCL O External EEPROM serial clock input pin EE_SDA I/O External EEPROM serial data pin XTAL1 I 6MHz crystal or resonator in XTAL2 I 6MHz crystal or resonator out D+ I/O USB data + D- I/O USB data - VCC I Voltage supply VSS I Ground V3.3 O 3.3V regulated output, a capacitor should be added on this pin

2 MA100 Data Sheet MEGAWIN

-R S T BS2 BS1 TX_LED RX_LED USB_LED Vcc D + NC TO1 TO0 BS0 NC NC RX TX NC XTAL2 XTAL1 Vss D - V3.3 EE_A1 EE_A0 LBRS EE_SDA EE_SCL 3 26 1 28 MA100L MEGAWIN MA100 Data Sheet 3

Date: Sheet of11Friday, May 19, 2006 Megawin MA100 Application Circuit 1.1 Megawin Technology Inc. A V3.31 D-2 Vss3 XTAL14 XTAL25 NC6 TX7 RX8 LBRS9 P010 EE_A011 EE_A112 EE_SCL13 EE_SDA14 NC 15NC 16TO0 17TO1 18NC 19BS0 20BS1 21BS2 22-RST 23TX_LED 24RX_LED 25USB_LED 26Vcc 27D+ 28 MA100L D1 LED D2 LED D3 LED USB_LED TX_LED XTAL1 VDD 6MHZ XTAL2 XTAL2 VCC_UART VCC_UART If the power of device A is more than 4.0V, Otherwise, VCC_UART should be 3.3V applied by MA100. R1 and R2 must be connected to VCC_UART which is the power of device A. VDD R3 30 R4 30 VBus VDD GND A01 A12 A23 GND4 VCC 5 WP 6 SCL 7 SDA 8 AT24C08 EE_A0 EE_A1 GND GND VDD GND EE_SCL EE_SDA RX_LED TX_LED RX USB_LED TXXTAL1 Optional RX TX Device A TX 4.7k 4.7k RX V3.3 15P Megawin MA100 Application Circuit 0.1u 10u 15P RX_LED 30P C8 0.1u 30P 1. Time-out between RX and USB: Time-out = 1/baud rate x 2n, where n=0 for TO1=1 and TO0=1, n=1 for TO1=1 and TO0=0; n=2 for TO1=0 and TO0=1, n=3 for TO1=0 and TO0=0. 2. TX/RX-pin is an open-drain pin: The TX/RX is an open-drain circuit, So, It decide that how much the suspend current, That is, If the power of device A is more than 4.0V, The VCC_UART’s power must be connect to the power of device A, Otherwise, The VCC_UART’s power should be connect to V3.3 pin of the MA100 3. UART’s TX data delay There is a time gap between the bytes transmi tted via MA100’s TX-pin. When the frequency of oscillator is 6 MHz, the minimum time gap is 10 microseconds. Users need to make sure the UART receiver device could move the data from the receiving buffer during the time gap, 10 us, to avoid it being overwritten by the following byte of data. The signal timing is shown in the following.

4 MA100 Data Sheet MEGAWIN

b0 b1 b2 b3 b4 b5 b6 b7 b0 b1 10 us End bit Start bit Start bit Byte N Byte N+1 Fig 1. The signal timing of TX-pin Absolute Maximum Rating PARAMETER RATING UNIT Supply Voltage to Ground Potential -0.5 to +6.0 V Maximum current per pin excluding VDD and VSS 25 mA Maximum current out of GND 100 Ma Maximum current out of VCC 100 Ma Ambient Operating Temperature 0 to +70 °C Storage Temperature -40 to +125 °C Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability of the device. DC Characteristics (VDD-VSS = 5.0 V, FOSC = 6MHz, Ta = 25° C; unless otherwise specified) PARAMETER SYM. CONDITIONS MIN. TYP. MAX. UNIT Op. Voltage VDD - 4.35 - 5.5 V Op. Current IOP No load (Ext.-V) In normal operation - - 20 Ma Suspend Current ISUS No load (Ext.-V) - 300 450 μA Input High Voltage VIH - 2 - VDD V Input Low Voltage VIL - 0 - 0.8 V USB function Static output high VOH RL = 15Kohm to Vss 2.8 - 3.6 V Static output low VOL No load - - 0.3 V Differential input sensitivity VDI | (D+) – (D-) | 0.2 - - V Differential common mode range VCM Include VDI range 0.8 - 2.5 V Single ended receiver threshold VSE - 0.8 - 2.0 V Regulator supply voltage V3.3 IL = 4 Ma 3.0 - 3.6 V UART function Tx sink current IOL VOL = 0.4V, VDD = 5.0V - 4.0 - Ma MEGAWIN MA100 Data Sheet 5

(VDD-VSS = 5.0 V, FOSC = 6MHz, Ta = 25° C; unless otherwise specified) PARAMETER SYM. CONDITIONS MIN. TYP. MAX. UNIT USB function Internal operating frequency fOP 1.5 - 1.5 MHz Transition time Rise time tR 75 - 300 Ns Fall time tF 75 - 300 Ns Rise/Fall time matching tRFM tR / tF 80 - 125 % Output signal crossover voltage VCRS 1.3 - 2.0 V Low speed data rate tDRAT 1.4775 - 1.5225 Mbps Source differential driver jitter To next transition tUDJ1 -25 - 25 Ns For paired transition tUDJ2 CL=350Pf measured at crossover point -14 - 14 Ns Receiver data jitter tolerance To next transition tDJR1 -75 - 75 Ns For paired transition tDJR2 CL=350Pf measured at crossover point -45 - 45 Ns Source EOP width tEOPT Measured at crossover point 1.25 - 1.50 Us Differential to EOP transition skew tDEOP Measured at crossover point -40 - 100 Ns Receiver EOP width Must reject as EOP tEOPR1 333 - - Ns Must accept tEOPR2 Measured at crossover point 667 - - Ns UART function Duration from End-bit to Next Start-bit on Transmission tTD 10 - - Us Duration from End-bit to Next Start-bit on Receiving tRD 0 - - Us

6 MA100 Data Sheet MEGAWIN

MEGAWIN MA100 Data Sheet 7

(0,0) 2N.C. 1XTAL2 3N.C. 4N.C. 5N.C. 6TX 7RX 8N.C. 9N.C. 10N.C. 11N.C. LBRS 13P0 14N. C. 15EE_A0 16EE_A1 17EE_SCL 18EE_SDA 19N. C. 20N. C. 21TO0 22TO1 /RST BS2 N.C. N.C. BS1 N.C. N.C. N.C. BS0 N.C.

37 VCC

36 N. C.

35 USB_LED

34 RX_LED

33 TX_LED

38 VCC

40 V3. 3 41 D-

44 XTAL1

43 VSS

42 VSS

8 MA100 Data Sheet MEGAWIN

Revision History

Version Date Page Description A1 2006/05 Initial document A2 2008/06 Update document A3 2008/12 Formatting MEGAWIN MA100 Data Sheet 9