參數(shù)資料
型號： 78k
廠商： NEC Corp.
英文描述： Common to 78K/0 Series
中文描述： 共同的78K / 0系列
文件頁數(shù)： 12/129頁
文件大?。?/td> 644K
代理商： 78K
12
User's Manual U12326EJ4V0UM
CHAPTER 1 MEMORY SPACE
1.1 Memory Spaces
The 78K/0 Series product program memory map varies depending on the internal memory capacity. For details
of memory-mapped address area, refer to the user’s manual of each product.
1.2 Internal Program Memory (Internal ROM) Space
Each 78K/0 Series product has internal ROM in the address space. Program and table data, etc. are stored
in the ROM. Normally, this memory space is addressed by the program counter (PC). For details of the internal
ROM space, refer to the user’s manual of each product.
1.3 Vector Table Area
The 64-byte area 0000H to 003FH is reserved as a vector table area. The program start addresses for branch
upon RESET input or interrupt request generation are stored in the vector table area. Of the 16-bit address, the
lower 8 bits are stored at even addresses and the higher 8 bits are stored at odd addresses. For the vector table
area, refer to the user’s manual of each product.
1.4 CALLT Instruction Table Area
The 64-byte area 0040H to 007FH can store the subroutine entry address of a 1-byte call instruction (CALLT).
1.5 CALLF Instruction Entry Area
The 2048-byte area 0800H to 0FFFH can perform a direct subroutine call with a 2-byte call instruction (CALLF).
1.6 Internal Data Memory (Internal RAM) Space
78K/0 Series products incorporate the following RAMs. For details of these RAMs, refer to the user’s manual
of each product.
(1) Internal high-speed RAM
Each 78K/0 Series product incorporates an internal high-speed RAM. In the 32-byte area FEE0H to FEFFH
of these areas, 4 banks of general-purpose registers, each bank consisting of eight 8-bit registers, are
allocated.
The internal high-speed RAM can also be used as a stack memory.
(2) Buffer RAM
There are some products in the 78K/0 Series to which buffer RAM is allocated. This RAM is used to store
the transfer/receive data of serial interface channel 1 (3-wire serial I/O mode with automatic transfer/receive
function). If not used in this mode, the buffer RAM can also be used as an ordinary RAM area.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
78K01 功能描述:SWITCH DIP DPDT 4 CIRCUIT RoHS:否 類別:開關(guān) >> DIP 系列:78 特色產(chǎn)品:RDM Series Rotary DIP Switch 標準包裝:70 系列:RDM 電路:十六進制 位置數(shù):16 觸點額定電壓:0.1A @ 42VDC 觸動器類型:用于工具旋轉(zhuǎn) 觸動器電平:凹槽式 安裝類型:通孔 方向:頂部觸動 可清洗:是 其它名稱:EG4977-5RDMAR16PIT
78K01RAT 功能描述:SWITCH DIP RAISED SLIDE 1POS TH RoHS:是 類別:開關(guān) >> DIP 系列:78 特色產(chǎn)品:RDM Series Rotary DIP Switch 標準包裝:70 系列:RDM 電路:十六進制 位置數(shù):16 觸點額定電壓:0.1A @ 42VDC 觸動器類型:用于工具旋轉(zhuǎn) 觸動器電平:凹槽式 安裝類型:通孔 方向:頂部觸動 可清洗:是 其它名稱:EG4977-5RDMAR16PIT
78K01S 制造商:Grayhill 功能描述:
78K01SRAT 功能描述:SWITCH DIP RAISED SLIDE 1POS TH RoHS:是 類別:開關(guān) >> DIP 系列:78 特色產(chǎn)品:RDM Series Rotary DIP Switch 標準包裝:70 系列:RDM 電路:十六進制 位置數(shù):16 觸點額定電壓:0.1A @ 42VDC 觸動器類型:用于工具旋轉(zhuǎn) 觸動器電平:凹槽式 安裝類型:通孔 方向:頂部觸動 可清洗:是 其它名稱:EG4977-5RDMAR16PIT
78K01ST 功能描述:SWITCH DIP RAISED SLIDE 1POS TH RoHS:是 類別:開關(guān) >> DIP 系列:78 特色產(chǎn)品:RDM Series Rotary DIP Switch 標準包裝:70 系列:RDM 電路:十六進制 位置數(shù):16 觸點額定電壓:0.1A @ 42VDC 觸動器類型:用于工具旋轉(zhuǎn) 觸動器電平:凹槽式 安裝類型:通孔 方向:頂部觸動 可清洗:是 其它名稱:EG4977-5RDMAR16PIT
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