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56F8002

Digital Signal Controller

Freescale Semiconductor 

Overview

• One serial peripheral interface (SPI)

— Full-duplex operation

— Master and slave modes

— Programmable length transactions (2 to 16 bits)

— Programmable transmit and receive shift order (MSB as first or last bit transmitted)

— Maximum slave module frequency = module clock frequency/2

• One inter-integrated Circuit (I2C) port

— Operates up to 400 kbps

— Supports master and slave operation

— Supports 10-bit address mode and broadcasting mode

— Supports SMBus, Version 2

• One 16-bit programmable interval timer (PIT)

— 16 bit counter with programmable counter modulo

— Interrupt capability

• One 16-bit programmable delay block (PDB)

— 16 bit counter with programmable counter modulo and delay time

— Counter is initiated by positive transition of internal or external trigger pulse

— Supports two independently controlled delay pulses used to synchronize PGA and ADC conversions with input

trigger event

— Two PDB outputs can be ORed together to schedule two conversions from one input trigger event

— PDB outputs can be can be used to schedule precise edge placement for a pulsed output that generates the control

signal for the CMP windowing comparison

— Supports continuous or single shot mode

— Bypass mode supported

• Computer operating properly (COP)/watchdog timer capable of selecting different clock sources

— Programmable prescaler and timeout period

— Programmable wait, stop, and partial powerdown mode operation

— Causes loss of reference reset 128 cycles after loss of reference clock to the PLL is detected

— Choice of clock sources from four sources in support of EN60730 and IEC61508:

– On-chip relaxation oscillator

– External crystal oscillator/external clock source

– System clock (IPBus up to 32 MHz)

– On-chip low power 1 kHz oscillator

• Real-timer counter (RTC)

— 8-bit up-counter

— Three software selectable clock sources

– External crystal oscillator/external clock source

– On-chip low-power 1 kHz oscillator

– System bus (IPBus up to 32 MHz)

— Can signal the device to exit power down mode

• Phase lock loop (PLL) provides a high-speed clock to the core and peripherals

— Provides 3x system clock to PWM and dual timer and SCI

— Loss of lock interrupt

— Loss of reference clock interrupt

• Clock sources

MC56F8006/MC56F8002 Digital Signal Controller, Rev. 2

Freescale Semiconductor

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