MAX3108 Datasheet, PDF (1/56 Pages) Maxim Integrated Products – SPI/I2C UART with 128-Word FIFOs in WLP

19-5723; Rev 1; 2/11
SPI/I²C UART with 128-Word FIFOs in WLP
General Description
The MAX3108 small form factor universal asynchronous
receiver-transmitter (UART) with 128 words each of
receive and transmit FIFOs is controlled through a serial
I²C or SPI™ controller interface. Auto-sleep and shut-
down modes help reduce power consumption during
periods of inactivity. A low 500FA (max) supply current
and tiny 25-bump WLP (2.1mm x 2.1mm) package make
the MAX3108 ideal for low-power portable devices. The
MAX3108 operates from a supply voltage of 1.71V to 3.6V.
Baud rates up to 24Mbps make the MAX3108 suitable for
today’s high data rate applications. A phase-locked loop
(PLL), predivider, and fractional baud-rate generator allow
high-resolution baud-rate programming and minimize the
dependency of baud rate on reference clock frequency.
Four GPIOs can be used as inputs, outputs, or interrupt inputs.
When configured as outputs, they can be programmed to be
open-drain outputs and sink up to 20mA of current.
The MAX3108 is ideal for portable and handheld devic-
es, is available in a 25-bump (2.1mm x 2.1mm) 0.4mm
pitch WLP package, and is specified over the -40NC to
+85NC extended temperature range.
Applications
Portable Communication Devices
Mobile Internet Devices
Low-Power Handheld Devices
Medical Systems
Point-of-Sale Systems
SPI is a trademark of Motorola, Inc.
IrDA is a service mark of Infrared Data Association Corporation.
Features
S 24Mbps (max) Baud Rate
S Integrated PLL and Divider
S 1.71V to 3.6V Supply Range
S High-Resolution Programmable Baud Rate
S SPI Up to 26MHz Clock Rate
S Fast Mode Plus I²C Up to 1MHz
S Automatic RTS and CTS Hardware Flow Control
S Automatic XON/XOFF Software Flow Control
S Special Character Detection
S 9-Bit Multidrop Mode Data Filtering
S SIR- and MIR-Compliant IrDA^SM Encoder/Decoder
S Flexible Logic Levels on the Controller and
Transceiver Interfaces
S Four Flexible GPIOs
S Line Noise Indication
S Shutdown and Auto-Sleep Modes
S Low 35µA (max) VCC Shutdown Current
S Register Compatible with the MAX3107
S Tiny, 25-Bump WLP Package (2.1mm x 2.1mm)
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX3108EWA+
-40NC to +85NC
25 WLP
+Denotes a lead(Pb)-free/RoHS-compliant package.
Functional Diagram
VL
LDOEN
VCC
V18
LDO
MAX3108
VEXT
SPI/I2C
MOSI/A1
MISO/SDA
CS/A0
SCLK/SCL
RST
IRQ
XIN
XOUT
LOGIC-LEVEL
TRANSLATION
CRYSTAL
OSCILLATOR
SPI/I²C
REGISTERS
AND
CONTROL
DIVIDER
PLL
FRACTIONAL
BAUD-RATE
GENERATOR
Tx AND FIFO
FLOW
CONTROL
Rx AND FIFO
GPIO
LOGIC-LEVEL
TRANSLATION
TX
CTS
RTS
RX
GPIO0
GPIO1
GPIO2
GPIO3
AGND
DGND
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