- 您現在的位置：買賣IC網 > PDF目錄375853 > FM8P51EP (Electronic Theatre Controls, Inc.) EPROM/ROM-Based 8-Bit Microcontroller PDF資料下載
參數資料
| 型號： | FM8P51EP |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | EPROM/ROM-Based 8-Bit Microcontroller |
| 中文描述： | 存儲器/基于ROM的8位微控制器 |
| 文件頁數： | 11/60頁 |
| 文件大小： | 369K |
| 代理商： | FM8P51EP |
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頁當前第11頁第12頁第13頁第14頁第15頁第16頁第17頁第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
FM8P51
Rev1.2 Mar 15, 2005
P.11/FM8P51
FEELING
TECHNOLOGY
2.1.4 STATUS (Status Register)
Address
03h (r/w)
STATUS
This register contains the arithmetic status of the ALU, the RESET status.
If the STATUS Register is the destination for an instruction that affects the Z, DC or C bits, then the write to these
three bits is disabled. These bits are set or cleared according to the device logic. Furthermore, the TOand
PD
bits
are not writable. Therefore, the result of an instruction with the STATUS Register as destination may be different
than intended. For example, CLRR STATUS will clear the upper three bits and set the Z bit. This leaves the
STATUS Register as 000u u1uu (where u = unchanged).
C
: Carry/borrow bit.
ADDAR, ADDIA
= 1, a carry occurred.
= 0, a carry did not occur.
SUBAR, SUBIA
= 1, a borrow did not occur.
= 0, a borrow occurred.
Note : A subtraction is executed by adding the two’s complement of the second operand. For rotate (RRR, RLR)
instructions, this bit is loaded with either the high or low order bit of the source register.
DC
: Half carry/half borrow bit.
ADDAR, ADDIA
= 1, a carry from the 4th low order bit of the result occurred.
= 0, a carry from the 4th low order bit of the result did not occur.
SUBAR, SUBIA
= 1, a borrow from the 4th low order bit of the result did not occur.
= 0, a borrow from the 4th low order bit of the result occurred.
Z
:
Zero bit.
= 1, the result of a logic operation is zero.
= 0, the result of a logic operation is not zero.
PD
: Power down flag bit.
= 1, after power-up or by the CLRWDT instruction.
= 0, by the SLEEP instruction.
TO
: Time overflow flag bit.
= 1, after power-up or by the CLRWDT or SLEEP instruction.
= 0, a watch-dog time overflow occurred.
PG1:PG0
: Program memory page select bits. Used for GOTO, CALL, or any instruction with PCL as destination.
PG1
PG0
Program Memory Page [Address]
0
0
Page 0 [000h~3FFh]
0
1
Page 1 [400h~7FFh]
1
0
Page 2 [800h~BFFh]
1
1
Page 3 [C00h~FFFh]
GP
: General purpose read/write bit.
Name
B7
GP
B6
PG1
B5
PG0
B4
TO
B3
PD
B2
Z
B1
DC
B0
C
相關PDF資料 |
PDF描述 |
|---|---|
| FM8P51F | EPROM/ROM-Based 8-Bit Microcontroller |
| FM8P51P | EPROM/ROM-Based 8-Bit Microcontroller |
| FM8P51E | EPROM/ROM-Based 8-Bit Microcontroller |
| FM8P54 | EPROM/ROM-Based 8-Bit Microcontroller Series |
| FM8P54E | EPROM/ROM-Based 8-Bit Microcontroller Series |
相關代理商/技術參數 |
參數描述 |
|---|---|
| FM8P51F | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EPROM/ROM-Based 8-Bit Microcontroller |
| FM8P51P | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EPROM/ROM-Based 8-Bit Microcontroller |
| FM8P54 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EPROM/ROM-Based 8-Bit Microcontroller Series |
| FM8P54E | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EPROM/ROM-Based 8-Bit Microcontroller Series |
| FM8P56 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EPROM/ROM-Based 8-Bit Microcontroller Series |
發布緊急采購，3分鐘左右您將得到回復。