- 您现在的位置：买卖IC网 > PDF目录69305 > R5F21276SDXXXFP 16-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP32 PDF资料下载
参数资料
| 型号： | R5F21276SDXXXFP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 16-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP32 |
| 封装： | 7 X 7 MM, 0.80 MM PITCH, PLASTIC, LQFP-32 |
| 文件页数： | 25/52页 |
| 文件大小： | 620K |
| 代理商： | R5F21276SDXXXFP |
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页第18页第19页第20页第21页第22页第23页第24页当前第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
49
ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET]
8285E–AVR–02/2013
11.5
Register description
11.5.1
MCUSR – MCU Status Register
The MCU Status Register provides information on which reset source caused an MCU reset.
Bit 4 – JTRF: JTAG Reset Flag
This bit is set if a reset is being caused by a logic one in the JTAG Reset Register selected by the JTAG instruction
AVR_RESET. This bit is reset by a Power-on Reset, or by writing a logic zero to the flag.
Bit 3 – WDRF: Watchdog Reset Flag
This bit is set if a Watchdog Reset occurs. The bit is reset by a Power-on Reset, or by writing a logic zero to the
flag.
Bit 2 – BORF: Brown-out Reset Flag
This bit is set if a Brown-out Reset occurs. The bit is reset by a Power-on Reset, or by writing a logic zero to the
flag.
Bit 1 – EXTRF: External Reset Flag
This bit is set if an External Reset occurs. The bit is reset by a Power-on Reset, or by writing a logic zero to the flag.
Bit 0 – PORF: Power-on Reset Flag
This bit is set if a Power-on Reset occurs. The bit is reset only by writing a logic zero to the flag.
To make use of the Reset Flags to identify a reset condition, the user should read and then Reset the MCUSR as
early as possible in the program. If the register is cleared before another reset occurs, the source of the reset can
be found by examining the Reset Flags.
11.5.2
WDTCR – Watchdog Timer Control Register
Bits 7:5 – Reserved
These bits are reserved and will always read as zero.
Bit 4 – WDCE: Watchdog Change Enable
This bit must be set when the WDE bit is written to logic zero. Otherwise, the Watchdog will not be disabled. Once
written to one, hardware will clear this bit after four clock cycles. Refer to the description of the WDE bit for a
Watchdog disable procedure. This bit must also be set when changing the prescaler bits. See ”Timed Sequences
Bit 3 – WDE: Watchdog Enable
When the WDE is written to logic one, the Watchdog Timer is enabled, and if the WDE is written to logic zero, the
Watchdog Timer function is disabled. WDE can only be cleared if the WDCE bit has logic level one. To disable an
enabled Watchdog Timer, the following procedure must be followed:
Bit
765
43210
0x35 (0x55)
–
JTRF
WDRF
BORF
EXTRF
PORF
MCUSR
Read/Write
RRR
R/W
Initial Value
0
See Bit Description
Bit
765
432
10
(0x60)
–
WDCE
WDE
WDP2
WDP1
WDP0
WDTCR
Read/Write
R
R/W
Initial Value
000
00
相关PDF资料 |
PDF描述 |
|---|---|
| R5F21276KFP | 16-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP32 |
| R5F21274SDFP | 16-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP32 |
| R5F21274SNFP | 16-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP32 |
| R5F21274KXXXFP | 16-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP32 |
| R5F21262SDXXXFP | 16-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP32 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| R5F21276SNFP | 制造商:Renesas Electronics 功能描述:16 R8C/2x 20MHz 32LQFP 32KB Tray 制造商:Renesas Electronics Corporation 功能描述:Microcontroller,R8C/27,ROM34K |
| R5F21276SNFP#U0 | 制造商:Renesas Electronics Corporation 功能描述:MCU 16-Bit R8C CISC 32KB Flash 3.3V/5V 32-Pin LQFP Tray 制造商:Renesas Electronics Corporation 功能描述:MCU 16BIT R8C CISC 32KB FLASH 3.3V/5V 32LQFP - Trays 制造商:Renesas Electronics 功能描述:16 R8C / Tiny 20MHz 32LQFP Bulk 制造商:Renesas Electronics Corporation 功能描述:IC R8C/27 MCU FLASH 32LQFP 制造商:Renesas Electronics Corporation 功能描述:IC MCU 16BIT R8C/27 32LQFP 制造商:Renesas Electronics Corporation 功能描述:IC, MCU, 16BIT, R8C/27, 32LQFP 制造商:Renesas Electronics Corporation 功能描述:R8C Series 16 bit 1.5 kB RAM 32 kB Flash Single Chip Microcontroller SMT-LQFP-32 制造商:Renesas Electronics Corporation 功能描述:IC 16BIT MCU M16C/R8C/TINY 20MHZ LQFP-32; Controller Family/Series:R8C/2x; Core Size:16bit; No. of I/O's:25; Supply Voltage Min:3V; Supply Voltage Max:5.5V; Digital IC Case Style:LQFP; No. of Pins:32; Program Memory Size:32KB ;RoHS Compliant: Yes 制造商:Renesas 功能描述:MCU 16-Bit R8C CISC 32KB Flash 3.3V/5V 32-Pin LQFP Tray |
| R5F21276SNFP#V2 | 功能描述:IC R8C/27 MCU FLASH 32LQFP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:R8C/2x/27 标准包装:250 系列:80C 核心处理器:8051 芯体尺寸:8-位 速度:16MHz 连通性:EBI/EMI，I²C，UART/USART 外围设备:POR，PWM，WDT 输入/输出数:40 程序存储器容量:- 程序存储器类型:ROMless EEPROM 大小:- RAM 容量:256 x 8 电压 - 电源 (Vcc/Vdd):4.5 V ~ 5.5 V 数据转换器:A/D 8x10b 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:68-LCC（J 形引线） 包装:带卷 (TR) |
| R5F21276SNFP#W4 | 功能描述:MCU 32KB ROM 1.5KB RAM 32-LQFP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:R8C/2x/27 标准包装:300 系列:78K0R/Ix3 核心处理器:78K/0R 芯体尺寸:16-位 速度:40MHz 连通性:3 线 SIO，I²C，LIN，UART/USART 外围设备:DMA，LVD，POR，PWM，WDT 输入/输出数:27 程序存储器容量:16KB（16K x 8） 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:1K x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 5.5 V 数据转换器:A/D 8x10b 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:38-SSOP 包装:托盘 |
| R5F21276SNFP#W6 | 制造商:Renesas Electronics Corporation 功能描述: |
发布紧急采购，3分钟左右您将得到回复。