CC2531 Datasheet, PDF (2/32 Pages) Texas Instruments – A USB Enabled System-On-Chip Solution for 2.4-GHz IEEE 802.15.4 and ZigBee Applications

CC2531
SWRS086 – SEPTEMBER 2009 ........................................................................................................................................................................................ www.ti.com
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
DESCRIPTION
The CC2531 is a USB enabled true system-on-chip (SoC) solution for IEEE 802.15.4, Zigbee and RF4CE
applications. It enables USB dongles or USB upgradable network nodes to be built with low total bill-of-material
costs. The CC2531 combines the performance of a leading RF transceiver with an industry-standard enhanced
8051 MCU, in-system programmable flash memory, 8-KB RAM, and many other powerful features. The CC2531
has various operating modes, making it suited for systems where ultralow power consumption is required. Short
transition times between operating modes further ensure low energy consumption. Source code for USB HID and
CDC libraries and examples are downloadable from the CC2531 product page on www.ti.com.
Combined with the industry-leading and golden-unit-status ZigBee protocol stack (Z-Stack™) from Texas
Instruments, the CC2531 provides a robust and complete ZigBee USB dongle or firmware upgradable network
node.
Combined with the golden-unit-status RemoTI™ stack from Texas Instruments, the CC2531 provides a robust
ZigBee RF4CE remote-control target for USB dongle or TV/STB implementations.
DIGITAL
ANALOG
MIXED
RESET
32-MHz
CRYSTAL OSC
WATCHDOG
TIMER
HIGH-SPEED
RC-OSC
ON-CHIP VOLTAGE
REGULATOR
POWER ON RESET
BROWN OUT
VDD (2 V–3.6 V)
DCOUPL
RESET_N
XOSC_Q2
XOSC_Q1
P2_4
P2_3
P2_2
P2_1
P2_0
P1_7
P1_6
P1_5
P1_4
P1_3
P1_2
P1_1
P1_0
P0_7
P0_6
P0_5
P0_4
P0_3
P0_2
P0_1
P0_0
32.768-kHz
CRYSTAL OSC
32-kHz
RC-OSC
SLEEP TIMER
DEBUG
INTERFACE
CLOCK MUX and
CALIBRATION
SLEEP MODE CONTROLLER
1-KB USB FIFO
USB
DP
USB PHY
DM
DMA
8051 CPU
CORE
MEMORY
ARBITRATOR
256-KB FLASH
8-KB SRAM
ADC
AUDIO/DC
8 CHANNELS
AES
ENCRYPTION
AND
DECRYPTION
USART 1
IRQ CTRL
FLASH WRITE
RADIO REGISTERS
CSMA/CA STROBE
PROCESSOR
RADIO DATA INTERFACE
USART 2
TIMER 1 (16-Bit)
DEMODULATOR AGC MODULATOR
TIMER 2
(IEEE 802.15.4 MAC TIMER)
TIMER 3 (8-Bit)
RECEIVE
CHAIN
TRANSMIT
CHAIN
TIMER 4 (8-Bit)
RF_P RF_N
B0300-02
2
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