25
9140CINDCO02/10
ATA8741
12.4.1
SREG AVR Status Register
" Bit 7 I: Global Interrupt Enable
The Global Interrupt Enable bit must be set for the interrupts to be enabled. The individual inter-
rupt enable control is then performed in separate control registers. If the Global Interrupt Enable
Register is cleared, none of the interrupts are enabled independent of the individual interrupt
enable settings. The I-bit is cleared by hardware after an interrupt has occurred, and is set by
the RETI instruction to enable subsequent interrupts. The I-bit can also be set and cleared by
the application with the SEI and CLI instructions, as described in the instruction set reference.
" Bit 6 T: Bit Copy Storage
The Bit Copy instructions BLD (Bit LoaD) and BST (Bit STore) use the T-bit as source or desti-
nation for the operated bit. A bit from a register in the Register File can be copied into T by the
BST instruction, and a bit in T can be copied into a bit in a register in the Register File by the
BLD instruction.
" Bit 5 H: Half Carry Flag
The Half Carry Flag H indicates a Half Carry in some arithmetic operations. Half Carry is useful
in BCD arithmetic. See the Instruction Set Description for detailed information.
" Bit 4 S: Sign Bit, S = N ?/SPAN> V
The S-bit is always an exclusive or between the Negative Flag N and the Twos Complement
Overflow Flag V. See the Instruction Set Description for detailed information.
" Bit 3 V: Twos Complement Overflow Flag
The Twos Complement Overflow Flag V supports twos complement arithmetics. See the
Instruction Set Description for detailed information.
" Bit 2 N: Negative Flag
The Negative Flag N indicates a negative result in an arithmetic or logic operation. See the
Instruction Set Description for detailed information.
" Bit 1 Z: Zero Flag
The Zero Flag Z indicates a zero result in an arithmetic or logic operation. See the Instruction
Set Description for detailed information.
" Bit 0 C: Carry Flag
The Carry Flag C indicates a carry in an arithmetic or logic operation. See the Instruction Set
Description for detailed information.
Bit
7
6
5
4
3
2
1
0
0x3F (0x5F)
I
T
H
S
V
N
Z
C
SREG
Read/Write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial Value
0
0
0
0
0
0
0
0
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
ATA8742-PXQW
MCU W/TRANSMITTER ASK/FSK 24QFN
ATA8743-PXQW
MCU W/TRANSMITTER ASK/FSK 24QFN
ATAVRRZ200
KIT DEMO AT86RF230
AV101-12LF
ATTENUATOR HIP3 0.70-1GHZ 8-SOIC
AV102-12LF
ATTENUATOR HIP3 1.7-2GHZ 8SOIC
AV113-12LF
ATTENUATOR HIP3 2.1-2.3GHZ 8SOIC
AXUV100G
SENSOR ELECTRON DETECTION
B0205F50200AHF
XFRMR BALUN RF 200-500MHZ 1608
相关代理商/技术参数
ATA8742
制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Microcontroller with UHF ASK/FSK Transmitter
ATA8742C- PXQW
制造商:Atmel Corporation 功能描述:Embedded C incl RF Tx for 433 MHz
ATA8742C-PXQW
功能描述:8位微控制器 -MCU RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
ATA8742C-PXQW-1
功能描述:EMBEDDED INCL RF TX FOR 433 MHZ 制造商:microchip technology 系列:- 包装:剪切带（CT） 零件状态:在售 频率:429MHz ~ 439MHz 应用:通用 调制或协议:UHF 数据速率（最大值）:32kbps 功率 - 输出:7.5dBm 电流 - 传输:9.8mA 数据接口:SPI 天线连接器:PCB，表面贴装 存储容量:4kB 闪存，256B EEPROM，256B SRAM 特性:- 电压 - 电源:2 V ~ 4 V 工作温度:-40°C ~ 85°C 封装/外壳:24-VQFN 裸露焊盘 标准包装:1
ATA8742-PXQW
功能描述:8位微控制器 -MCU Embedded uC incl RF Tx for 433 MHz
RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
ATA8743
制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Microcontroller with UHF ASK/FSK Transmitter
ATA8743C- PXQW
功能描述:8位微控制器 -MCU Embedded uC incl RF Tx for 315 MHz
RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
ATA8743C-PXQW
制造商:Atmel Corporation 功能描述:EMBEDDED ?C INCL RF TX FOR 868 MHZ - Trays 制造商:Atmel Corporation 功能描述:EMBEDDED C INCL 868MHZ TX