Reference Design HFRD-34.0 (Rev.3, 05/08)
Maxim Integrated Products
Page 10 of
18
Control, Power Management, and Miscellaneous Components
Part Number
Functional Description
ATMEGA48
The ATMega48 is a low-power CMOS 8-bit microcontroller based on the AVR enhanced
RISC architecture. By executing instructions in a single clock cycle, the ATMega48 achieves
throughputs approaching 1 MIPS per MHz, allowing the system designer to optimize power
consumption versus processing speed.
The ATMega48 features a multiple-input 10-bit ADC, an 8-bit and a 16-bit timer with two
PWM outputs each, an internal 8MHz oscillator, a 2-wire compatible interface, and a POR
and brown-out circuit. The ATMega48 provides 4k flash, 256B of EEPROM, and 512B of
SRAM.
Additional information:
www.atmel.com
MAX7312
The MAX7312 2-wire-interfaced expander provides 16-bit parallel input/output (I/O) port
expansion in SMBus and I2C applications. The MAX7312 consists of input port registers,
output port registers, polarity inversion registers, configuration registers, a bus timeout
register, and an I2C-compatible serial interface logic, compatible with SMBus.
Additional information:
www.maxim-ic.com/MAX7312
MAX3397E
The MAX3397E ±15kV ESD-protected, bidirectional level translator provides level shifting for
data transfer in a multivoltage system. Externally applied voltages, V
CC
and V
L
, set the logic
levels on either side of the device. A logic-low signal present on the V
L
side of the device
appears as a logic-low signal on the V
CC
side of the device, and vice versa. The MAX3397E
utilizes a transmission and gate-based design to allow data translation in either direction on
any single data line.
Additional information:
www.maxim-ic.com/MAX3397E
MAX6348
The MAX6348 microprocessor ( P) supervisory circuit monitors the power supplies in P and
digital systems. This device provides excellent circuit reliability and low cost by eliminating
external components and adjustments when it is used with 2.5, 3, 3.3, and 5V powered
circuits. The MAX6348 asserts a reset signal whenever the V
CC
supply voltage declines
below a preset threshold; the device keeps the signal asserted for at least 100ms after V
CC
has risen above the reset threshold.
Additional information:
www.maxim-ic.com/MAX6348
MAX1563
The MAX1563 single, current-limited switch provides up to 4A to power up to eight USB
ports. It operates from a 4V to 5.5V input supply, and consumes only 40 A of quiescent
current when operating and only 3 A in shutdown.
Additional information:
www.maxim-ic.com/MAX1563