- 您現(xiàn)在的位置：買賣IC網 > PDF目錄20614 > USB-EA-CONVZ (Analog Devices Inc)SUPPORT BOARD ADUC8XX PDF資料下載
參數(shù)資料
| 型號： | USB-EA-CONVZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 38/68頁 |
| 文件大?。?/td> | 0K |
| 描述： | SUPPORT BOARD ADUC8XX |
| 標準包裝： | 1 |
| 類型： | 仿真器 |
| 適用于相關產品： | ADuC8xx |
| 所含物品： | 模塊 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁當前第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁
REV. B
ADuC824
–43–
TIME INTERVAL COUNTER (TIC)
A time interval counter is provided on-chip for counting longer
intervals than the standard 8051-compatible timers are capable
of. The TIC is capable of timeout intervals ranging from 1/128th
second to 255 hours. Furthermore, this counter is clocked by
the crystal oscillator rather than the PLL and thus has the
ability to remain active in power-down mode and time long
power-down intervals. This has obvious applications for remote
battery-powered sensors where regular widely spaced readings
are required.
Six SFRs are associated with the time interval counter, TIMECON
being its control register. Depending on the configuration of the
IT0 and IT1 bits in TIMECON, the selected time counter register
overflow will clock the interval counter. When this counter is equal
to the time interval value loaded in the INTVAL SFR, the TII
bit (TIMECON.2) is set and generates an interrupt if enabled
(See IEIP2 SFR description under Interrupt System later in this
data sheet.) If the ADuC824 is in power-down mode, again
with TIC interrupt enabled, the TII bit will wake up the device
and resume code execution by vectoring directly to the TIC
interrupt service vector address at 0053 hex. The TIC-related
SFRs are described in Table XVI. Note also that the timebase
SFRs can be written initially with the current time, the TIC can
then be controlled and accessed by user software. In effect, this
facilitates the implementation of a real-time clock. A block
diagram of the TIC is shown in Figure 32.
8-BIT
PRESCALER
HUNDREDTHS COUNTER
HTHSEC
SECOND COUNTER
SEC
MINUTE COUNTER
MIN
HOUR COUNTER
HOUR
TIEN
INTERVAL TIMEOUT
TIME INTERVAL COUNTER
INTERRUPT
8-BIT
INTERVAL COUNTER
TIME INTERVAL
INTVAL
INTERVAL
TIMEBASE
SELECTION
MUX
TCEN
32.768kHz EXTERNAL CRYSTAL
ITS0, 1
COMPARE
COUNT = INTVAL?
Figure 32. TIC, Simplified Block Diagram
相關PDF資料 |
PDF描述 |
|---|---|
| RGP10KE-E3/54 | DIODE GPP 1A 800V 500NS DO-41 |
| A7NXB-1506G | CABLE D-SUB - AMN15B/AE15G/X |
| C1005C0G1H470J | CAP CER 47PF 50V 5% NP0 0402 |
| SLF6045T-220M1R1-3PF | INDUCTOR POWER 22UH 1.1A SMD |
| GBM12DRTI-S13 | CONN EDGECARD 24POS .156 EXTEND |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| USB-ETH ADAPTER | 制造商:DANAHER - FLUKE 功能描述:USB TO 10/100MBPS ETHERNET ADAPTER |
| USB-ETHERNET-AX88772B | 制造商:Olimex 功能描述:USB ETH ADAPTOR OLINUXINO |
| USB-EVAL | 功能描述:界面開發(fā)工具 USB products evalua- tion board unpopultd RoHS:否 制造商:Bourns 產品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
| USBEX02 | 制造商:Distributed By MCM 功能描述:15' USB 2.0 Active Extension Cable |
| USBEXT-150 | 制造商:DigitHead Inc 功能描述:USB EXTENDER 150' |
發(fā)布緊急采購，3分鐘左右您將得到回復。