參數(shù)資料
型號(hào)： CYRF69213
廠商： Cypress Semiconductor Corp.
英文描述： Programmable Radio on Chip Low Power
中文描述： 可編程片上無(wú)線電低功耗
文件頁(yè)數(shù)： 41/85頁(yè)
文件大?。?/td> 731K
代理商： CYRF69213
CYRF69213
Document #: 001-07552 Rev. *B
Page 41 of 85
Timer Registers
All timer functions of the CYRF69213 are provided by a single
timer block. The timer block is asynchronous from the CPU
clock.
Registers
Free-Running Counter
The 16-bit free-running counter is clocked by a 4/6-MHz
source. It can be read in software for use as a general-purpose
time base. When the low order byte is read, the high order byte
is registered. Reading the high order byte reads this register
allowing the CPU to read the 16-bit value atomically (loads all
bits at one time). The free-running timer generates an interrupt
at a 1024-
μ
s rate. It can also generate an interrupt when the
free-running counter overflow occurs—every 16.384 ms. This
allows extending the length of the timer in software.
Figure 16. 16-Bit Free-Running Counter Block Diagram
Table 58.SPI SCLK Frequency
SCLK
Select
00
01
10
11
CPUCLK
Divisor
6
12
48
96
SCLK Frequency when CPUCLK =
12 MHz
2 MHz
4 MHz
1 MHz
2 MHz
250 KHz
500 KHz
125 KHz
250 KHz
24 MHz
Timer Capture
Clock
16-bit Free
Running Counter
Overflow
Interrupt
1024-
μ
s
Timer
Interrupt
Table 59.Free-Running Timer Low-Order Byte (FRTMRL) [0x20] [R/W]
Bit #
Field
Read/Write
Default
Bits 7:0
This register holds the low-order byte of the 16-bit free-running timer. Reading this register causes the high-order byte to be moved into a holding
register allowing an automatic read of all 16 bits simultaneously.
For reads, the actual read occurs in the cycle when the low order is read. For writes, the actual time the write occurs is the cycle when the high
order is written
When reading the free-running timer, the low-order byte should be read first and the high-order second. When writing, the low-order byte should
be written first then the high-order byte
7
6
5
4
3
2
1
0
Free-running Timer [7:0]
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
Free-running Timer [7:0]
Table 60.Free-Running Timer High-Order Byte (FRTMRH) [0x21] [R/W]
Bit #
Field
Read/Write
Default
Bits 7:0
When reading the free-running timer, the low-order byte should be read first and the high-order second. When writing, the low-order byte should
be written first then the high-order byte
7
6
5
4
3
2
1
0
Free-running Timer [15:8]
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
Free-running Timer [15:8]
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參數(shù)描述
CYRF69213_08 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Programmable Radio on Chip Low Power
CYRF69213_13 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Programmable Radio on Chip Low Power
CYRF69213-40LFXC 功能描述:射頻接收器 PRoC LP COM RoHS:否 制造商:Skyworks Solutions, Inc. 類型:GPS Receiver 封裝 / 箱體:QFN-24 工作頻率:4.092 MHz 工作電源電壓:3.3 V 封裝:Reel
CYRF69213-40LTXC 功能描述:8位微控制器 -MCU Programmable Radio on Chip Low Power RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
CYRF69213A-40LFXC 功能描述:8位微控制器 -MCU Programmable Radio on Chip Low Power RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
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