- 您现在的位置：买卖IC网 > PDF目录69332 > SAF-C161K-LM3V (INFINEON TECHNOLOGIES AG) 16-BIT, 20 MHz, MICROCONTROLLER, PQFP80 PDF资料下载
参数资料
| 型号： | SAF-C161K-LM3V |
| 厂商： | INFINEON TECHNOLOGIES AG |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 16-BIT, 20 MHz, MICROCONTROLLER, PQFP80 |
| 封装： | 0.65 MM PITCH, METRIC, PLASTIC, QFP-80 |
| 文件页数： | 18/66页 |
| 文件大小： | 1102K |
| 代理商： | SAF-C161K-LM3V |
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
C161K
C161O
Data Sheet
21
V2.0, 2001-01
Watchdog Timer
The Watchdog Timer represents one of the fail-safe mechanisms which have been
implemented to prevent the controller from malfunctioning for longer periods of time.
The Watchdog Timer is always enabled after a reset of the chip, and can only be
disabled in the time interval until the EINIT (end of initialization) instruction has been
executed. Thus, the chip’s start-up procedure is always monitored. The software has to
be designed to service the Watchdog Timer before it overflows. If, due to hardware or
software related failures, the software fails to do so, the Watchdog Timer overflows and
generates an internal hardware reset and pulls the RSTOUT pin low in order to allow
external hardware components to be reset.
The Watchdog Timer is a 16-bit timer, clocked with the system clock divided by 2/128.
The high byte of the Watchdog Timer register can be set to a prespecified reload value
(stored in WDTREL) in order to allow further variation of the monitored time interval.
Each time it is serviced by the application software, the high byte of the Watchdog Timer
is reloaded. Thus, time intervals between 20
s and 336 ms can be monitored
(@ 25 MHz).
The default Watchdog Timer interval after reset is 5.24 ms (@ 25 MHz).
Parallel Ports
The C161K/O provides up to 63 I/O lines which are organized into six input/output ports
and one input port. All port lines are bit-addressable, and all input/output lines are
individually (bit-wise) programmable as inputs or outputs via direction registers. The I/O
ports are true bidirectional ports which are switched to high impedance state when
configured as inputs. The output drivers of three I/O ports can be configured (pin by pin)
for push/pull operation or open-drain operation via control registers. During the internal
reset, all port pins are configured as inputs.
All port lines have programmable alternate input or output functions associated with
them. All port lines that are not used for these alternate functions may be used as general
purpose IO lines.
PORT0 and PORT1 may be used as address and data lines when accessing external
memory, while Port 4 outputs the additional segment address bits A21/19/17 … A16 in
systems where segmentation is enabled to access more than 64 KBytes of memory.
Port 6 provides optional chip select signals.
Port 3 includes alternate functions of timers, serial interfaces, and the optional bus
control signal BHE/WRH.
Port 5 is used for timer control signals.
相关PDF资料 |
PDF描述 |
|---|---|
| SAF-C161O-LM3V | 16-BIT, 20 MHz, MICROCONTROLLER, PQFP80 |
| SAB-C161K-LM3V | 16-BIT, 20 MHz, MICROCONTROLLER, PQFP80 |
| SAF-C164SI-8R16M3V | 16-BIT, MROM, 16 MHz, RISC MICROCONTROLLER, PQFP80 |
| SAK-C164CI-8R16M3V | 16-BIT, MROM, 16 MHz, RISC MICROCONTROLLER, PQFP80 |
| SAK-C164CL-6R16M3V | 16-BIT, MROM, 16 MHz, RISC MICROCONTROLLER, PQFP80 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SAF-C161K-LM3VHA | 制造商:Rochester Electronics LLC 功能描述: 制造商:Infineon Technologies AG 功能描述: |
| SAFC161KLM3VHAXT | 制造商:Infineon Technologies AG 功能描述:MCU 16-Bit C166 CISC/RISC ROMLess 3.3V 80-Pin MQFP |
| SAFC161KLMHAX | 制造商:Infineon Technologies AG 功能描述:MCU 16-Bit C166 CISC/RISC ROMLess 5V 80-Pin MQFP |
| SAFC161O | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:16-Bit Single-Chip Microcontroller |
| SAF-C161O | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:16-Bit Single-Chip Microcontroller |
发布紧急采购，3分钟左右您将得到回复。