Maxim HFRD-34.0 manual Control, Power Management, and Miscellaneous Components, ATMEGA48, MAX7312

Control, Power Management, and Miscellaneous Components

Part Number	Functional Description
	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.
ATMEGA48	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
	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,
MAX7312	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
	The MAX3397E ±15kV ESD-protected, bidirectional level translator provides level shifting for
	data transfer in a multivoltage system. Externally applied voltages, VCC and VL, set the logic
	levels on either side of the device. A logic-low signal present on the VL side of the device
	appears as a logic-low signal on the VCC side of the device, and vice versa. The MAX3397E
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
	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
MAX6348	circuits. The MAX6348 asserts a reset signal whenever the VCC supply voltage declines
	below a preset threshold; the device keeps the signal asserted for at least 100ms after VCC
	has risen above the reset threshold.
	Additional information:
	www.maxim-ic.com/MAX6348
	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
MAX1563	current when operating and only 3￿A in shutdown.
	Additional information:
	www.maxim-ic.com/MAX1563

Reference Design HFRD-34.0 (Rev.3, 05/08)	Maxim Integrated Products
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