cp3cn23 National Semiconductor Corporation, cp3cn23 Datasheet - Page 169
![no-image](/images/no-image-200.jpg)
cp3cn23
Manufacturer Part Number
cp3cn23
Description
Cp3cn23 Reprogrammable Connectivity Processor With Dual Can Interfaces
Manufacturer
National Semiconductor Corporation
Datasheet
1.CP3CN23.pdf
(246 pages)
- Current page: 169 of 246
- Download datasheet (3Mb)
24.0 Multi-Function Timer
The Multi-Function Timer module contains a pair of 16-bit
timer/counters. Each timer/counter unit offers a choice of
clock sources for operation and can be configured to oper-
ate in any of the following modes:
T Processor-Independent Pulse Width Modulation (PWM)
T Dual-Input Capture mode, which measures the elapsed
T Dual Independent Timer mode, which generates system
24.1.1
The Timer/Counter block contains the following functional
blocks:
T Two 16-bit counters, Timer/Counter 1 (TCNT1) and Tim-
T Two 16-bit reload/capture registers, TCRA and TCRB
T Control logic necessary to configure the timer to operate
T Interrupt control and I/O control logic
mode, which generates pulses of a specified width and
duty cycle, and which also provides a general-purpose
timer/counter.
time between occurrences of external events, and which
also provides a general-purpose timer/counter.
timing signals or counts occurrences of external events.
er/Counter 2 (TCNT2)
in any of the four operating modes
System
Timer/Counter Block
Reset
Clock
TB
Prescaler Register
Prescaler Counter
Synchr.
System
Clock
TPRSC
5-Bit
Clock Source
Figure 79. Multi-Function Timer Block Diagram
Figure 80. Multi-Function Timer Clock Source
External Event
No Clock
Prescaled Clock
Pulse Accumulator
External Event
Reload/Capture A
Reload/Capture B
Timer/Counter 1
Timer/Counter 2
Timer/Counter
PWM/Capture/Counter
Mode Select + Control
TCNT1
TCNT2
TCRA
TCRB
169
T Single-Input Capture and Single Timer mode, which pro-
The timer unit uses two I/O pins, called TA and TB. The tim-
er I/O pins are alternate functions of the PG7 and PE4 port
pins, respectively.
24.1
Figure 79 is a block diagram showing the internal structure
of the MFT. There are two main functional blocks: a Timer/
Counter and Action block and a Clock Source block. The
Timer/Counter and Action block contains two separate tim-
er/counter units, called Timer/Counter 1 and Timer/Counter
2.
In a power-saving mode that uses the low-frequency
(32.768 kHz) clock as the System Clock, the synchroniza-
tion circuit requires that the Slow Clock operate at no more
than one-fourth the speed of the 32.768 kHz System Clock.
24.1.2
The Clock Source block generates the signals used to clock
the two timer/counter registers. The internal structure of the
Clock Source block is shown in Figure 80.
vides one external event counter and one system timer.
Action
TIMER STRUCTURE
Clock Source Block
Interrupt A
Interrupt B
Counter 1
Counter 2
Select
Select
DS081
Clock
Clock
TA
TB
www.national.com
Counter 1
Clock
Counter 2
Clock
DS082
Related parts for cp3cn23
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![mma1270keg](/images/no-image3.png)
Part Number:
Description:
Freescale Semiconductor Technical Data
Manufacturer:
National Semiconductor Corporation
Datasheet:
![ADC12034](/images/no-image3.png)
Part Number:
Description:
Self-calibrating 12-bit Plus Sign Serial I/o A/d Converters With Mux And Sample/hold
Manufacturer:
National Semiconductor Corporation
Datasheet:
![LMX2350](/images/no-image3.png)
Part Number:
Description:
Pllatinum Tm Fractional N Rf / Integer N If Dual Low Power Frequency Synthesizer
Manufacturer:
National Semiconductor Corporation
Datasheet:
![LMX2324](/images/no-image3.png)
Part Number:
Description:
Pllatinum? 2.0 Ghz Frequency Synthesizer For Rf Personal Communications
Manufacturer:
National Semiconductor Corporation
Datasheet:
![LMX2301](/images/no-image3.png)
Part Number:
Description:
Pllatinumtm 160 Mhz Frequency Synthesizer For Rf Personal Communications
Manufacturer:
National Semiconductor Corporation
Datasheet:
![NDS8963](/images/no-image3.png)
Part Number:
Description:
Dual N-channel Enhancement Mode Field Effect Transistor
Manufacturer:
National Semiconductor Corporation
Datasheet:
![LM1201](/images/no-image3.png)
Part Number:
Description:
Video Amplifier System (obsolete)
Manufacturer:
National Semiconductor Corporation
Datasheet:
![LM3501TL-16](/images/no-image3.png)
Part Number:
Description:
Synchronous Step-up DC/DC Converter For White Led Applications
Manufacturer:
National Semiconductor Corporation
Datasheet:
![AD9621](/images/no-image3.png)
Part Number:
Description:
CLC420 - High Speed, Voltage Feedback op Amp, Package: Lcc, Pin Nb=20
Manufacturer:
National Semiconductor Corporation
Datasheet:
![LM2403](/images/no-image3.png)
Part Number:
Description:
Monolithic Triple 4.5 CRT Driver
Manufacturer:
National Semiconductor Corporation
Datasheet:
![LM592M](/images/no-image3.png)
Part Number:
Description:
Differential Video Amplifier
Manufacturer:
National Semiconductor Corporation
Datasheet:
![ADC10061](/images/no-image3.png)
Part Number:
Description:
ADC10061 - 10-Bit 600 NS A/D Converter With Input Multiplexer And Sample/Hold, Package: Soic Wide, Pin Nb=20
Manufacturer:
National Semiconductor Corporation
Datasheet:
![DS36277TMX](/images/no-image3.png)
Part Number:
Description:
DS36277 - Dominant Mode Multipoint Transceiver, Package: Soic Narrow, Pin Nb=8
Manufacturer:
National Semiconductor Corporation
Datasheet:
![DS3654](/images/no-image3.png)
Part Number:
Description:
Printer Solenoid Driver
Manufacturer:
National Semiconductor Corporation
Datasheet:
![DS3662](/images/no-image3.png)
Part Number:
Description:
Quad High Speed Trapezoidal Bus Transceiver
Manufacturer:
National Semiconductor Corporation
Datasheet: