- 您现在的位置：买卖IC网 > PDF目录367733 > P83CL782 (NXP Semiconductors N.V.) Low voltage 8-bit microcontrollers with UART and I2C-bus PDF资料下载
参数资料
| 型号： | P83CL782 |
| 厂商： | NXP Semiconductors N.V. |
| 英文描述： | Low voltage 8-bit microcontrollers with UART and I2C-bus |
| 中文描述： | 低电压8 - UART及位微控制器的I2C总线 |
| 文件页数： | 18/76页 |
| 文件大小： | 342K |
| 代理商： | P83CL782 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页当前第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页
1997 Mar 14
18
Philips Semiconductors
Product specification
Low voltage 8-bit microcontrollers with
UART and I
2
C-bus
P83CL781; P83CL782
11 TIMER/EVENT COUNTERS
The P83CL78x contains three 16-bit timer/event counter
registers; Timer 0, Timer 1 and Timer 2 which can perform
the following functions:
Measure time intervals and pulse durations
Count events
Generate interrupt requests.
In the ‘Timer’ operating mode the register is incremented
every machine cycle. Since a machine cycle consists of
12 oscillator periods, the count rate is
1
12
×
f
osc
.
In the ‘Counter’ operating mode, the register is
incremented in response to a HIGH-to-LOW transition.
Since it takes 2 machine cycles (24 oscillator periods) to
recognize a HIGH-to-LOW transition, the maximum count
rate is
1
24
×
f
osc
. To ensure a given level is sampled, it
should be held for at least one complete machine cycle.
11.1
Timer 0 and Timer 1
Timer 0 and Timer 1 can be programmed independently to
operate in four modes:
Mode 0 8-bit timer or 8-bit counter each with divide-by-32
prescaler.
Mode 1 16-bit time-interval or event counter.
Mode 2 8-bit time-interval or event counter with automatic
reload upon overflow.
Mode 3 Timer 0 establishes TL0 and TH0 as two
separate counters.
11.2
Timer T2
Timer T2 is a 16-bit timer/counter that can operate (like
Timer 0 and 1) either as a timer or as an event counter.
These functions are selected by the state of the C/T2 bit in
the T2CON register; see Tables 1 and 2.
Three operating modes are available Capture, Auto-reload
and Baud Rate Generator, which also are selected via the
T2CON register; see Table 3.
11.2.1
C
APTURE MODE
Figure 10 shows the Capture mode. Two options in this
mode, may be selected by the EXEN2 bit in T2CON:
If EXEN2 = 0, then Timer 2 is a 16-bit timer or counter
which upon overflowing sets the Timer 2 overflow bit
TF2, this may then be used to generate an interrupt.
If EXEN2 = 1, Timer 2 operates as described above but
with the additional feature that a HIGH-to-LOW
transition at external input T2EX causes the current
value in TL2 and TH2 to be captured into registers
RCAP2L and RCAP2H respectively. In addition, the
transition at T2EX causes the EXF2 bit in T2CON to be
set; this may also be used to generate an interrupt.
11.2.2
A
UTO
-
RELOAD MODE
Figure 11 shows the Auto-reload mode. Also two options
in this mode are selected by the EXEN2 bit in T2CON:
If EXEN2 = 0, then when Timer 2 rolls over, it sets the
TF2 bit but also causes the Timer 2 registers to be
reloaded with the 16-bit value held in registers RCAP2L
and RCAP2H. The 16-bit value held in these registers is
preset by software.
If EXEN2 = 1, Timer 2 operates as described above but
with the additional feature that a HIGH-to-LOW
transition at external input T2EX will also trigger the
16-bit reload and set the EXF2 bit.
11.2.3
B
AUD
R
ATE
G
ENERATOR MODE
The Baud Rate Generator mode is selected when
RTCLK = 1. It will be described in conjunction with the
serial port (UART); see Section 14.3.2.
相关PDF资料 |
PDF描述 |
|---|---|
| P83CL782HDH | Low voltage 8-bit microcontrollers with UART and I2C-bus |
| P83CL782HDP | Low voltage 8-bit microcontrollers with UART and I2C-bus |
| P83CL781HDH | Low voltage 8-bit microcontrollers with UART and I2C-bus |
| P83CL882 | 80C51 Ultra Low Power ULP telephony controller |
| P83CL883T | TELX microcontrollers for CT0 handset/basestation applications |
相关代理商/技术参数 |
参数描述 |
|---|---|
| P83CL782HDB | 制造商:未知厂家 制造商全称:未知厂家 功能描述:8-Bit Microcontroller |
| P83CL782HDH | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Low voltage 8-bit microcontrollers with UART and I2C-bus |
| P83CL782HDN | 制造商:未知厂家 制造商全称:未知厂家 功能描述:8-Bit Microcontroller |
| P83CL782HDP | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Low voltage 8-bit microcontrollers with UART and I2C-bus |
| P83CL882 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:80C51 Ultra Low Power ULP telephony controller |
发布紧急采购，3分钟左右您将得到回复。