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CC1110FX 参数 Datasheet PDF下载

CC1110FX图片预览
型号: CC1110FX
PDF下载: 下载PDF文件 查看货源
内容描述: 低功耗低于1 GHz的射频系统级芯片(SoC )与MCU,存储器,收发器和USB控制器 [Low-power sub-1 GHz RF System-on-Chip (SoC) with MCU, memory, transceiver, and USB controller]
分类和应用: 存储射频控制器
文件页数/大小: 240 页 / 2823 K
品牌: TAOS [ TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS ]
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CC1110Fx / CC1111Fx  
13.1.6 Timer Tick Generation  
The XDATA memory locations 0xFDA2-  
0xFEFF (350 bytes) will lose all data when  
PM2 or PM3 is entered. These locations will  
contain undefined data when active mode is  
re-entered.  
The power management controller generates  
a tick or enable signal for the peripheral  
timers, thus acting as a prescaler for the  
timers. This is a global clock division for Timer  
1, Timer 2, Timer 3, and Timer 4. The tick  
speed is programmed from 0.203 to 26 MHz  
for CC1110Fx assuming a 26 MHz crystal or  
from 0.1875 to 24 MHz for CC1111Fx by setting  
the CLKCON.TICKSPDregister appropriately.  
The registers which retain their contents are  
the CPU registers, peripheral registers and RF  
registers, unless otherwise specified for a  
given register bit field. Switching to power  
modes PM2 and PM3 appears transparent to  
software with the following exception:  
Note: CLKCON.TICKSPD cannot be set  
higher than CLKCON.CLKSPD.  
Watchdog timer 15-bit counter is reset  
to 0x0000 when entering PM2 or PM3  
13.1.8 I/O and Radio  
13.1.7 Data Retention  
I/O port pins P1_0 and P1_1 do not have  
internal pull-up/pull-down resistors. These pins  
should therefore be set as outputs or pulled  
high/low externally to avoid leakage current.  
In PM2 and PM3, power is removed from most  
of the internal circuitry. However, parts of  
SRAM will retain its contents. The content of  
internal registers is also retained in PM2 and  
PM3, with some exceptions (see Table 31,  
Table 32, and Table 33).  
To save power, the radio should be turned off  
when it is not used.  
The XDATA memory locations 0xF000-  
0xFFFF (4096 bytes) retain data in PM2 and  
PM3. Please note the following exception:  
13.2 Reset  
regulated 1.8 V digital power supply only, The  
BOD will protect the memory contents during  
supply voltage variations which cause the  
regulated 1.8 V power to drop below the  
minimum level required by flash memory and  
SRAM.  
The CC1110Fx/CC1111Fx has four reset sources.  
The following events generate a reset:  
Forcing RESET_N input pin low  
A power-on reset condition  
A brown-out reset condition  
Watchdog timer reset condition  
When power is initially applied to the  
CC1110Fx/CC1111Fx the Power On Reset (POR)  
and Brown Out Detector (BOD) will hold the  
device in reset state until the supply voltage  
reaches above the Power On Reset and  
Brown Out voltages.  
The initial conditions after a reset are as  
follows:  
I/O pins are configured as inputs with  
pull-up, except P1_0 and P1_1.  
CPU program counter is loaded with  
0x0000 and program execution starts at  
this address  
All peripheral registers are initialized to  
their reset values (refer to register  
descriptions)  
Figure 18 shows the POR/BOD operation with  
the 1.8V (typical) regulated supply voltage  
together with the active low reset signals  
BOD_RESET and POR_RESET shown in the  
bottom of the figure (note that these signals  
are not available but are included on the figure  
for illustration purposes).  
Watchdog timer is disabled  
13.2.1 Power On Reset and Brown Out  
Detector  
The cause of the last reset can read from the  
register bits SLEEP.RST. It should be noted  
that a BOD reset will be read as a POR reset.  
The CC1110Fx/CC1111Fx includes a Power On  
Reset (POR) providing correct initialization  
during device power-on. Also included is a  
Brown Out Detector (BOD) operating on the  
SWRS033E  
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