- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄367732 > P83CE598 (NXP Semiconductors N.V.) 8-bit microcontroller with on-chip CAN PDF資料下載
參數(shù)資料
| 型號(hào)： | P83CE598 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 8-bit microcontroller with on-chip CAN |
| 中文描述： | 8位微控制器芯片的CAN |
| 文件頁數(shù)： | 27/108頁 |
| 文件大?。?/td> | 507K |
| 代理商： | P83CE598 |
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頁當(dāng)前第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頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁
1996 Jun 27
27
Philips Semiconductors
Product specification
8-bit microcontroller with on-chip CAN
P8xCE598
11.3
Watchdog Timer (T3)
In addition to Timer T2 and the standard timers (Timer 0
and Timer 1), a Watchdog Timer (WDT) comprising an
11-bit prescaler and an 8-bit timer (T3) is also provided
(see Fig.12).
The timer T3 is incremented every 1.5 ms, derived from
the oscillator frequency of 16 MHz by the following
f
12
2048
×
formula:
When a timer T3 overflow occurs, the microcontroller is
reset and a reset-output-pulse is generated at pin RST.
This short output pulse (3 machine cycles) may be
suppressed if the RST pin is connected to a capacitor.
To prevent a system reset (by an overflow of the WDT), the
user program has to reload T3 within periods that are
shorter than the programmed Watchdog time interval.
If the processor suffers a hardware/software malfunction,
the software will fail to reload the timer. This failure will
produce a reset upon overflow thus preventing the
processor running out of control.
f
timer
-------------------------
=
The Watchdog Timer can only be reloaded if the condition
flag WLE = PCON.4 has been previously set by software.
At the moment the counter is loaded the condition flag is
automatically cleared.
The timer interval between the timer's reloading and the
occurrence of a reset depends on the reloaded value. For
example, this may range from 1.5 ms to 0.375 s when
using an oscillator frequency of 16 MHz.
In the Idle state the Watchdog Timer and reset circuitry
remain active.
The Watchdog Timer (WDT) is controlled by the Enable
Watchdog pin (EW); see Table 28.
Table 28
EW controlling WDT and Power-down mode
PIN EW
WDT
POWER-DOWN MODE
LOW
HIGH
enabled
disabled
disabled
enabled
Fig.12 Functional diagram of T3 Watchdog Timer.
handbook, full pagewidth
MGA157
INTERNAL BUS
1/12 fCLK
write
T3
PRESCALER
11-BIT
TIMER T3 (8-BIT)
LOAD
CLEAR
overflow
internal
reset
LOADEN
EW
LOADEN
PCON.4
PCON.1
CLEAR
WLE
PD
RRST
RST
P
VDD
INTERNAL BUS
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| P8XCE598 | 8-bit microcontroller with on-chip CAN |
| P80CE598 | 8-bit microcontroller with on-chip CAN |
| P83CL781 | Low voltage 8-bit microcontrollers with UART and I2C-bus |
| P83CL781HFH | Low voltage 8-bit microcontrollers with UART and I2C-bus |
| P83CL781HFP | Low voltage 8-bit microcontrollers with UART and I2C-bus |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| P83CE598FFB | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit microcontroller with on-chip CAN |
| P83CE598FHB | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit microcontroller with on-chip CAN |
| P83CE654FBB | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| P83CL410 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low voltage 8-bit microcontrollers with I2C-bus |
| P83CL410HFD | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。