Revision 1.27 - August 22, 2007
PPC405EZ – PowerPC 405EZ Embedded Processor
Analog-to-Digital Converter (ADC)
Preliminary Data Sheet
The ADC is a mixed-signal core. It uses the successive approximation (binary search) conversion technique to
achieve minimal conversion time. The analog input range is 0.0V to Vref.
Features include:
• Internal 10-bit resolution SAR ADC
• Sample and hold
• Support for multiple conversion times such as
– 3.25 μs with 4-MHz input clock
– 52 μs with 250-kHz input clock
• Comparator
• Digital controller
• 8-channel analog input (3.3V) with 8:1 analog multiplexer
• 10-bit parallel digital outputs
• Input trigger from Chameleon Timer supported
• OPB interface with optional DMA support
Digital-to-Analog Converter (DAC)
The DAC is a 1-channel converter, optimized for low power applications. It provides unbuffered single-ended
analog current output. The single analog current output can be tied directly to an output resistor to provide twos-
complementary, single-ended voltage outputs.
Features include:
• 10-bit resolution at 30M samples/sec
• Segmented DAC
• Single-ended current outputs (6mA maximum swing at 3.3V)
• Monotonicity ensured
• Straight binary input
• Internal bandgap voltage reference
• Power management by means of Sleep Mode
• Integrated functional test logic
• Input trigger from Chameleon Timer supported
• OPB interface with optional DMA support
JTAG
Features include:
• IEEE 1149.1 test access port
• JTAG Boundary Scan Description Language (BSDL)
Refer to http://www.amcc.com/Embedded/Partners for a list of AMCC partners supplying probes for use with the
JTAG interface.
AMCC Proprietary
15
AMCC [ APPLIED MICRO CIRCUITS CORPORATION ]
