參數(shù)資料
型號： R5F21183DD
元件分類： 微控制器/微處理器
英文描述： 16-BIT, FLASH, 20 MHz, MICROCONTROLLER, PDIP20
封裝： 6.30 X 19 MM, 1.78 MM PITCH, PLASTIC, SDIP-20
文件頁數(shù)： 9/43頁
文件大?。?/td> 685K
代理商： R5F21183DD
REJ03B0234-0030 Rev.0.30 Feb 14, 2008
Page 17 of 92
Under development
Preliminary Specification
Specifications in this preliminary version are subject to change.
R32C/157 Group
2. Central Processing Unit (CPU)
2.1.8.5
Register Bank Select Flag (B flag)
This flag selects a register bank. It indicates 0 when the register bank 0 is selected, and 1 when the reg-
ister bank 1 is selected.
2.1.8.6
Overflow Flag (O flag)
This flag becomes 1 if an operation results in an overflow; otherwise, it indicates 0.
2.1.8.7
Interrupt Enable Flag (I flag)
This flag enables a maskable interrupt. It indicates 0 when an interrupt is disabled, and 1 when an inter-
rupt is enabled. Once an interrupt is accepted, the flag is set to 0.
2.1.8.8
Stack Pointer Select Flag (U flag)
This flag indicates 0 when the interrupt stack pointer (ISP) is selected, and 1 when the user stack
pointer (USP) is selected.
It is set to 0 when a hardware interrupt is accepted or the INT instruction whose software interrupt
number is 0 to 127 is executed.
2.1.8.9
Floating-point Underflow Flag (FU flag)
This flag becomes 1 if a floating point operation results in an underflow; otherwise it indicates 0. It also
becomes 1 when the operand has invalid numbers (subnormal numbers).
2.1.8.10
Floating-point Overflow Flag (FO flag)
This flag becomes 1 if a floating point operation results in an overflow; otherwise it indicates 0. It also
becomes 1 when the operand has invalid numbers (subnormal numbers).
2.1.8.11
Processor Interrupt Priority Level (IPL)
The 3-bit processor interrupt priority level (IPL) specifies eight processor interrupt priority levels from 0
to 7. If a requested interrupt's priority level is higher than the processor interrupt priority level (IPL), this
interrupt is enabled.
If the processor interrupt priority level (IPL) is set to 111b (level 7), any interrupt is disabled.
2.1.8.12
Fixed-point Designation Bit (DP bit)
This bit designates a fixed point. It also designates which part of the multiplication result should be
taken. It is used for MULX instruction.
2.1.8.13
Floating-point Rounding Mode (RND)
The 2-bit floating point rounding mode designates a rounding mode for the operation result.
2.1.8.14
Reserved
The fields are written with 0. The read value is undefined.
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相關代理商/技術參數(shù)
參數(shù)描述
R5F21183DD#U0 制造商:Renesas Electronics Corporation 功能描述:MCU 16BIT M16C CISC 12KB FLASH 3.3V/5V 20PIN SDIP - Rail/Tube
R5F21183DD#V0 功能描述:IC R8C MCU FLASH 20SDIP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:R8C/1x/18 標準包裝:250 系列:80C 核心處理器:8051 芯體尺寸:8-位 速度:16MHz 連通性:EBI/EMI，I²C，UART/USART 外圍設備:POR，PWM，WDT 輸入/輸出數(shù):40 程序存儲器容量:- 程序存儲器類型:ROMless EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4.5 V ~ 5.5 V 數(shù)據轉換器:A/D 8x10b 振蕩器型:內部 工作溫度:-40°C ~ 85°C 封裝/外殼:68-LCC（J 形引線） 包裝:帶卷 (TR)
R5F21183DDD#U0 制造商:Renesas Electronics Corporation 功能描述:MCU 16BIT M16C CISC 12KB FLASH 3.3V/5V 20PIN SDIP - Rail/Tube
R5F21183DSP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:RENESAS 16-BIT SINGLE-CHIP MCU R8C FAMILY / R8C/1x SERIES
R5F21183DSP#U0 制造商:Renesas Electronics Corporation 功能描述:MCU 16BIT M16C CISC 12KB FLASH 3.3V/5V 20PIN LSSOP - Rail/Tube 制造商:Renesas Electronics Corporation 功能描述:IC MCU 16BIT 12KB FLASH 20SSOP
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