TM4C1230E6PM Datasheet, PDF (48/1103 Pages) Texas Instruments – Tiva™ TM4C1230E6PM Microcontroller

Architectural Overview
1.3.4.2
– Peripheral bus segmentation
■ Data sizes of 8, 16, and 32 bits
■ Transfer size is programmable in binary steps from 1 to 1024
■ Source and destination address increment size of byte, half-word, word, or no increment
■ Maskable peripheral requests
■ Interrupt on transfer completion, with a separate interrupt per channel
System Control and Clocks (see page 198)
System control determines the overall operation of the device. It provides information about the
device, controls power-saving features, controls the clocking of the device and individual peripherals,
and handles reset detection and reporting.
■ Device identification information: version, part number, SRAM size, Flash memory size, and so
on
■ Power control
– On-chip fixed Low Drop-Out (LDO) voltage regulator
– Low-power options for microcontroller: Sleep and Deep-Sleep modes with clock gating
– Low-power options for on-chip modules: software controls shutdown of individual peripherals
and memory
– 3.3-V supply brown-out detection and reporting via interrupt or reset
■ Multiple clock sources for microcontroller system clock. The following clock sources are provided
to the TM4C1230E6PM microcontroller:
– Precision Internal Oscillator (PIOSC) providing a 16-MHz frequency
• 16 MHz ±3% across temperature and voltage
• Can be recalibrated with 7-bit trim resolution to achieve better accuracy (16 MHz ±1%)
• Software power down control for low power modes
– Main Oscillator (MOSC): A frequency-accurate clock source by one of two means: an external
single-ended clock source is connected to the OSC0 input pin, or an external crystal is
connected across the OSC0 input and OSC1 output pins.
– Low Frequency Internal Oscillator (LFIOSC): On-chip resource used during power-saving
modes
■ Flexible reset sources
– Power-on reset (POR)
– Reset pin assertion
– Brown-out reset (BOR) detector alerts to system power drops
– Software reset
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June 12, 2014
Texas Instruments-Production Data