- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄67761 > M34559G6FP 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PQFP52 PDF資料下載
參數(shù)資料
| 型號： | M34559G6FP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PQFP52 |
| 封裝： | 10 X 10 MM, 0.65 MM PITCH, PLASTIC, LQFP-52 |
| 文件頁數(shù)： | 89/93頁 |
| 文件大小： | 1810K |
| 代理商： | M34559G6FP |
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頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁當前第89頁第90頁第91頁第92頁第93頁
CLRC663
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Preliminary data sheet
COMPANY PUBLIC
Rev. 3.1 — 26 September 2011
171131
95 of 126
NXP Semiconductors
CLRC663
Contactless reader IC
14. Timer unit
The external host may use this timer to manage timing relevant tasks. The timer unit may
be used in one of the following configurations:
Time-out counter
Watch-dog counter
Stop watch
Programmable one-shot
Periodical trigger
The timer unit can be used to measure the time interval between two events or to indicate
that a specific event occurred after a specific time. The timer can be triggered by events
which will be explained in the following, but the timer itself does not influence any internal
event (e.g. A time-out during data reception does not influence the reception process
automatically). Furthermore, several timer related bits are set and these bits can be used
to generate an interrupt.
The CLRC663 has 4 identical timers (Timer 0 - Timer 3). Each timer has an input clock of
13.56 MHz (derived from the 27.12 MHz quartz) and has 16 bits. The reload value for the
counter is defined in a range of 0d to 65535d in the register TnReload_Reg. Timer 4 also
can be used as wake up timer. In this case the internal LPO (Low Power Oscillator) can be
used as input clock.
The current value of the timer is indicated by the register TnCounterVal_Reg.
If the counter reaches 0 an interrupt will be generated automatically by the next clock
indicated by setting the TimerIRq bit in the register CommonIRq_Reg. If enabled, this
event can be indicated on the IRQ line. The bit TimerIRq can be set and reset by the host
controller. Depending on the configuration the timer will stop at 0h or restart with the value
from register TReload_Reg.
The status of the timer is indicated by bit TnRunning in register Tcontrol_Reg.
The timer can be manually started by setting TnRunning and TnStartStopNow in register
ControlReg or manually stopped by setting TnStartStopNow and clearing TnRunning in
register TnControl_Reg.
Furthermore the timer can be started automatically by setting the bit TnStart in the register
TnMode_Reg to fulfil dedicated protocol requirements automatically.
14.1 Usage timer unit
14.1.1 Time-Out- and Watch-Dog-Counter
Having started the timer by setting TnReloadValue the timer unit decrements the
TnCounterValue Register beginning with a certain start event. If a certain stop event
occurs e.g. a bit is received from the card, the timer unit stops (no interrupt is generated).
On the other hand, if no stop event occurs, e.g. the card does not answer in the expected
time, the timer unit decrements down to zero and generates a timer interrupt request. This
signals the
-Processor that the expected event has not occurred in the given time T
Timer.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M34571GD-XXXFP | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDSO24 |
| M34571G6-XXXFP | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDSO24 |
| M34571GDFP | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDSO24 |
| M34571G4FP | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDSO24 |
| M34571G6FP | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDSO24 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M34559G6-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M3455AG8FP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M3455AG8-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M3455AGCFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M3455AGC-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。