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參數(shù)資料

型號(hào)：	HD407A4669
廠商：	Hitachi,Ltd.
英文描述：	Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit(帶雙音多頻電路的低電壓微計(jì)算機(jī))
中文描述：	低電壓如同在微機(jī)芯片的DTMF產(chǎn)生電路（帶雙音多頻電路的低電壓微計(jì)算機(jī)）
文件頁數(shù)：	11/142頁
文件大小：	894K
代理商：	HD407A4669

HD404669 Series

RAM Memory Map

The MCU contains a RAM area consisting of a memory register area, a data area, and a stack area. In

addition, an interrupt control bits area, special function register area, and register flag area are mapped onto

the same RAM memory space. The RAM memory map is shown in figure 2 and described below.

RAM-Mapped Register Area ($000–$03F):

Interrupt Control Bits Area ($000–$003)

This area is used for interrupt control bits (figure 3). These bits can be accessed only by RAM bit

manipulation instructions (SEM/SEMD, REM/REMD, and TM/TMD). However, note that not all the

instructions can be used for each bit. Limitations on using the instructions are shown in figure 4.

Special Function Register Area ($004–$01F, $024–$03F)

This area is used as mode registers and data registers for external interrupts, serial interface, timers,

DTMF, comparator, and as data control registers for I/O ports. The structure is shown in figures 2 and

5. These registers can be classified into three types: write-only (W), read-only (R), and read/write

(R/W). RAM bit manipulation instructions cannot be used for these registers.

This area is used for the DTON, WDON, and other register flags and interrupt control bits (figure 3).

These bits can be accessed only by RAM bit manipulation instructions (SEM/SEMD, REM/REMD, and

TM/TMD). However, note that not all the instructions can be used for each bit. Limitations on using

the instructions are shown in figure 4.

相關(guān)代理商/技術(shù)參數(shù)	參數(shù)描述
HD407A4669H	制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit
HD407C4374	制造商:未知廠家制造商全稱:未知廠家功能描述:HMCS43XXFamily User＇s Manual/Device
HD407C4374FT	制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Low-Voltage AS Microcomputers with On-Chip A/D Converter
HD407C4384FT	制造商:未知廠家制造商全稱:未知廠家功能描述:4-Bit Microcontroller
HD407C4384S	制造商:未知廠家制造商全稱:未知廠家功能描述:4-Bit Microcontroller

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