LTP5901-IPR datasheet(22/34 Pages) LINER

22 / 34 page

LTP5901-IPR/LTP5902-IPR

59012iprfa

For more information www.linear.com/LTP5901-IPR or www.linear.com/LTP5902-IPR

operaTion

TheLTP5901/LTP5902istheworld’smostenergy-efficient

IEEE 802.15.4 compliant platform, enabling battery and

energyharvestedapplications.Withapowerful32-bitARM

Cortex-M3, best-in-class radio, flash, RAM and purpose-

built peripherals, Eterna provides a flexible, scalable and

robust networking solution for applications demanding

minimal energy consumption and data reliability in even

the most challenging RF environments.

Shown in Figure 10, Eterna integrates purpose-built pe-

ripheralsthatexcelinbothlowoperating-energyconsump-

tion and the ability to rapidly and precisely cycle between

operating and low power states. Items in the gray shaded

region labeled analog core correspond to the analog/RF

components.

Figure 10. Eterna Block Diagram

4-BIT

DAC

VGA

BPF

PPF

AGC

LPF

ADC

DAC

10-BIT

ADC

PLL

RSSI

LNA

20MHz

32kHz

32kHz, 20MHz

PTAT

59012IPR F10

BAT

LOAD

LIMITER

VOLTAGE REFERENCE

ANALOG CORE

DIGITAL CORE

CORE REGULATOR

CLOCK REGULATOR

ANALOG REGULATOR

DC/DC

CONVERTER

PRIMARY

DC/DC

CONVERTER

RELAXATION

OSCILLATOR

PoR

TIMERS

SCHED

SRAM

72kB

FLASH

512kB

FLASH

CONTROLLER

CODE

AES

AUTO

MAC

802.15.4

MOD

802.15.4

FRAMING

DMA

IPCS

SPI

SLAVE

CLI

UART

(2 PIN)

API

UART

(6 PIN)

ADC

CTRL

802.15.4

DEMOD

SYSTEM

PMU/

CLOCK

CONTROL

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