参数资料
型号: PIC17LC756A-08/L
厂商: Microchip Technology
文件页数: 10/159页
文件大小: 0K
描述: IC MCU OTP 16KX16 A/D 68PLCC
产品培训模块: Asynchronous Stimulus
标准包装: 19
系列: PIC® 17C
核心处理器: PIC
芯体尺寸: 8-位
速度: 8MHz
连通性: I²C,SPI,UART/USART
外围设备: 欠压检测/复位,POR,PWM,WDT
输入/输出数: 50
程序存储器容量: 32KB(16K x 16)
程序存储器类型: OTP
RAM 容量: 902 x 8
电压 - 电源 (Vcc/Vdd): 3 V ~ 5.5 V
数据转换器: A/D 12x10b
振荡器型: 外部
工作温度: 0°C ~ 70°C
封装/外壳: 68-LCC(J 形引线)
包装: 管件
Section 3 Floating-Point Unit (FPU)
R01UH0025EJ0300 Rev. 3.00
Page 75 of 1336
Sep 24, 2010
SH7261 Group
3.5
FPU Exceptions
3.5.1
FPU Exception Sources
FPU exceptions may occur on floating-point operation instruction and the exception sources are as
follows:
FPU error (E): When FPSCR.DN = 0 and a denormalized number is input (No chance to occur
in the SH2A-FPU)
Invalid operation (V): In case of an invalid operation, such as NaN input
Division by zero (Z): Division with a zero divisor
Overflow (O): When the operation result overflows
Underflow (U): When the operation result underflows
Inexact exception (I): When overflow, underflow, or rounding occurs
The FPU exception cause field in FPSCR contains bits corresponding to all of above sources E, V,
Z, O, U, and I, and the FPU exception flag and enable fields in FPSCR contain bits corresponding
to sources V, Z, O, U, and I, but not E. Thus, FPU errors cannot be disabled.
When an FPU exception occurs, the corresponding bit in the FPU exception cause field is set to 1,
and 1 is added to the corresponding bit in the FPU exception flag field. When an FPU exception
does not occur, the corresponding bit in the FPU exception cause field is cleared to 0, but the
corresponding bit in the FPU exception flag field remains unchanged.
3.5.2
FPU Exception Handling
FPU exception handling is initiated in the following cases:
FPU error (E): FPSCR.DN = 0 and a denormalized number is input (No chance to occur in the
SH2A-FPU)
Invalid operation (V): FPSCR.Enable.V = 1 and invalid operation
Division by zero (Z): FPSCR.Enable.Z = 1 and division with a zero divisor
Overflow (O): FPSCR.Enable.O = 1 and instruction with possibility of operation result
overflow
Underflow (U): FPSCR.Enable.U = 1 and instruction with possibility of operation result
underflow
Inexact exception (I): FPSCR.Enable.I = 1 and instruction with possibility of inexact operation
result
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PIC17LC756AT-08/L 功能描述:8位微控制器 -MCU 32KB 902 RAM 50 I/O 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
PIC17LC756AT-08/PT 功能描述:8位微控制器 -MCU 32KB 902 RAM 50 I/O 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
PIC17LC756AT-08I/L 功能描述:8位微控制器 -MCU 32KB 902 RAM 50 I/O 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
PIC17LC756AT-08I/PT 功能描述:8位微控制器 -MCU 32KB 902 RAM 50 I/O 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
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