- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄379503 > UPD7554AA (NEC Corp.) 4-BIT SINGLE-CHIP MICROCOMPUTER PDF資料下載
參數(shù)資料
| 型號： | UPD7554AA |
| 廠商： | NEC Corp. |
| 英文描述： | 4-BIT SINGLE-CHIP MICROCOMPUTER |
| 中文描述： | 4位單片機(jī) |
| 文件頁數(shù)： | 18/64頁 |
| 文件大?。?/td> | 991K |
| 代理商： | UPD7554AA |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁當(dāng)前第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁
18
μ
PD7554A, 7554A(A)
2.5
DATA MEMORY (RAM): 64
×
4 BITS
The data memory is a static RAM of 64 word
×
4 bits configuration. It is used as the area to store or stack processed
data. The data memory may be processed in 8-bit units when paired with the accumulator.
Fig. 2-6 Data Memory Map
( 0 ) 00H
(63) 3FH
64 Words
×
4 Bits
The data memory is addressed in the following three ways:
Direct: Direct addressing based on immediate data of an instruction
Register indirect: Indirect addressing according to the contents of the pair register HL (including automatic
incrementation and decrementation)
Stack: Indirect addressing according to the contents of the stack pointer (SP)
An arbitrary space of the data memory is available as stack memory. The boundary of the stack area is specified
when the TAMSP instruction initializes the SP. After that, the stack area is accessed automatically by the call or return
instruction.
After the call instruction is executed, the content of the PC and PSW is stored in the order shown in the following
diagram:
0
0
PC9
PC8
3
0
PSW
Note
PC3 – PC0
PC7 – PC4
SP – 4
SP – 3
SP – 2
SP – 1
Stack Area
Note
Bit 1 is fixed at 0.
When the return instruction is executed, the content of the PSW is not restored while those of the PC are restored.
Data in the data memory is retained at a low supply voltage in the STOP mode.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UPD7554ACS | 4-BIT SINGLE-CHIP MICROCOMPUTER |
| UPD7554AG | 4-BIT SINGLE-CHIP MICROCOMPUTER |
| UPD75CG08E | 4 BIT SINGLE CHIP CMOS MICROCOMPUTERS |
| UPD7508 | 4 BIT SINGLE CHIP CMOS MICROCOMPUTERS |
| UPD7508C | 4 BIT SINGLE CHIP CMOS MICROCOMPUTERS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UPD7554AG-597-E2 | 制造商:Renesas Electronics Corporation 功能描述: |
| UPD7554AG-597-E2-A | 制造商:Renesas Electronics Corporation 功能描述: |
| UPD7554AG-603-E2 | 制造商:Renesas Electronics Corporation 功能描述: |
| UPD7554AG-603-E2-A | 制造商:Renesas Electronics Corporation 功能描述: |
| UPD7554AG-611-E2 | 制造商:Renesas Electronics Corporation 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。