MA100 Datasheet, PDF (2/9 Pages) Extech Instruments Corporation. – 200A AC Mini Clamp Meter/Voltage Detector

General Description
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
TX
O
RX
I
BS0~2
I
LBRS
I
USB_LED
O
TX_LED
O
RX_LED
O
P0
O
-RST
I
TO0~1
I
EE_A0
O
EE_A1
O
EE_SCL
O
EE_SDA
I/O
XTAL1
I
XTAL2
I
D+
I/O
D-
I/O
V_CC
I
V_SS
I
V3.3
O
Description
UART Transmit with an open-drain
UART Receive with an open drain
Test pin
Low baud rate select pin
LED for USB indication
LED for transmit indication
LED for receive indication
Output pin
Reset pin, low active
Time-out between RX and USB
External EEPROM A0 address pin
External EEPROM A1 address pin
External EEPROM serial clock input pin
External EEPROM serial data pin
6MHz crystal or resonator in
6MHz crystal or resonator out
USB data +
USB data -
Voltage supply
Ground
3.3V regulated output, a capacitor should be added on
this pin
2
MA100 Data Sheet
MEGAWIN