參數(shù)資料
型號(hào)： 78078Y
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)： 27/129頁
文件大?。?/td> 644K
代理商： 78078Y
27
CHAPTER 3 ADDRESSING
User's Manual U12326EJ4V0UM
15
0
Short direct memory
Effective
address
1
1
1
1
1
1
1
8
7
0
7
OP code
saddr-offset
α
When 8-bit immediate data is 20H to FFH,
α
= 0.
When 8-bit immediate data is 00H to 1FH,
α
= 1.
3.2.4 Short direct addressing
[Function]
The memory to be manipulated in the fixed space is directly addressed with 8-bit data in an instruction word.
This addressing is applied to the 256-byte fixed space FE20H to FF1FH. An internal high-speed RAM and
special function registers (SFRs) are mapped at FE20H to FEFFH and FF00H to FF1FH, respectively.
The SFR area (FF00H to FF1FH) where short direct addressing is applied is a part of the entire SFR area.
Ports that are frequently accessed in a program, a compare register of the timer/event counter and a capture
register of the timer/event counter are mapped in the area FF00H through FF1FH, and these SFRs can be
manipulated with a small number of bytes and clocks.
When 8-bit immediate data is at 20H to FFH, bit 8 of an effective address is set to 0. When it is at 00H to
1FH, bit 8 is set to 1. See
[Illustration]
below.
[Operand format]
Identifier
Description
saddr
Label or FE20H to FF1FH immediate data
saddrp
Label or FE20H to FF1FH immediate data (even address only)
[Description example]
MOV FE30H, #50H; When setting saddr to FE30H and the immediate data to 50H
[Illustration]
Instruction code
0
0
0
1
0
0
0
1
OP code
0
0
1
1
0
0
0
0
30H (saddr-offset)
0
1
0
1
0
0
0
0
50H (immediate data)
相關(guān)PDF資料
PDF描述
78083 Common to 78K/0 Series
780924 Common to 78K/0 Series
780964 Common to 78K/0 Series
78098 Common to 78K/0 Series
78098B Common to 78K/0 Series
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
780790001 制造商:Molex 功能描述:1mm pit DDR3 DIMM PCB Skt Blk
78079-0001 功能描述:DDR3 / DDR2 / DDR 連接器 1.0MM DDR3 DIMM SKT 240P V TH 2.67TL AU RoHS:否 制造商:Molex 產(chǎn)品類型:DIMM 系列:78588 節(jié)距:1 mm 位置/觸點(diǎn)數(shù)量:240 安裝風(fēng)格:Through Hole 安裝角:Vertical 外殼材料:Thermoplastic 觸點(diǎn)材料:Copper Alloy 觸點(diǎn)電鍍:Gold 電壓額定值:29 V 電流額定值:1 A 長(zhǎng)度:
780790002 制造商:Molex 功能描述:
78079-0002 功能描述:DDR3 / DDR2 / DDR 連接器 1mm DDR3 DIMM VtTH O O/Lub .38AuLF 240Ckt RoHS:否 制造商:Molex 產(chǎn)品類型:DIMM 系列:78588 節(jié)距:1 mm 位置/觸點(diǎn)數(shù)量:240 安裝風(fēng)格:Through Hole 安裝角:Vertical 外殼材料:Thermoplastic 觸點(diǎn)材料:Copper Alloy 觸點(diǎn)電鍍:Gold 電壓額定值:29 V 電流額定值:1 A 長(zhǎng)度:
78079-0011 功能描述:DDR3 / DDR2 / DDR 連接器 1mm DDR3 DIMM VtTH / /Lub .76AuLF 240Ckt RoHS:否 制造商:Molex 產(chǎn)品類型:DIMM 系列:78588 節(jié)距:1 mm 位置/觸點(diǎn)數(shù)量:240 安裝風(fēng)格:Through Hole 安裝角:Vertical 外殼材料:Thermoplastic 觸點(diǎn)材料:Copper Alloy 觸點(diǎn)電鍍:Gold 電壓額定值:29 V 電流額定值:1 A 長(zhǎng)度:
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