Datasheet

4 MPC555 Product Brief

Key Features

1.2.7 Two Time Processor Units (TPU3)

• Each TPU3 module provides these features:

— A dedicated micro-engine operates independently of the RCPU

— 16 independent programmable channels and pins

— Each channel has an event register consisting of a 16-bit capture register, a 16-bit compare

— Nine pre-programmed timer functions are available

— Any channel can perform any time function

— Each timer function can be assigned to more than one channel

— Two timer count registers with programmable prescalers

— Each channel can be synchronized to one or both counters

— Selectable channel priority levels

— 5-V tolerant inputs/outputs

• 6-Kbyte dual port TPU RAM (DPTRAM) is shared by the two TPU3 modules for TPU microcode

1.2.8 18-Channel Modular I/O System (MIOS1)

• Ten double action submodules (DASM)

• Eight dedicated PWM sub-modules (PWMSM)

• Two 16-bit modulus counter submodules (MCSM)

• Two parallel port I/O submodules (PIOSM)

• 5-V tolerant inputs/outputs

1.2.9 Two Queued Analog-to-Digital Converter Modules

(QADC64)

Each QADC provides:

• Up to 16 analog input channels, using internal multiplexing

• Up to 41 total input channels, using internal and external multiplexing

• 10-bit A/D converter with internal sample/hold

• Typical conversion time of 10 µs (100,000 samples per second)

• Two conversion command queues of variable length

• Automated queue modes initiated by:

— External edge trigger/level gate

— Software command

• 64 result registers

• Output data that is right- or left-justified, signed or unsigned

• 5-V reference and range

Freescale Semiconductor, I

Freescale Semiconductor, Inc.

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