- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄67723 > IS89C51-40PQ (INTEGRATED SILICON SOLUTION INC) 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQFP44 PDF資料下載
參數(shù)資料
| 型號： | IS89C51-40PQ |
| 廠商： | INTEGRATED SILICON SOLUTION INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQFP44 |
| 封裝： | PLASTIC, QFP-44 |
| 文件頁數(shù)： | 3/48頁 |
| 文件大?。?/td> | 371K |
| 代理商： | IS89C51-40PQ |
第1頁第2頁當(dāng)前第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
IS89C51
Integrated Silicon Solution, Inc. — 1-800-379-4774
11
MC016-1C
11/21/98
ISSI
The detail description of each bit is as follows:
PSW:
Program Status Word. Bit Addressable.
7
6
54321
0
CY
AC
F0
RS1
RS0
OV
—
P
Register Description:
CY
PSW.7
Carry flag.
AC
PSW.6
Auxiliary carry flag.
F0
PSW.5
Flag 0 available to the user for general
purpose.
RS1
PSW.4
Register bank selector bit 1.(1)
RS0
PSW.3
Register bank selector bit 0.(1)
OV
PSW.2
Overflow flag.
—
PSW.1
Usable as a general purpose flag
P
PSW.0
Parity flag. Set/Clear by hardware each
instruction cycle to indicate an odd/even
number of “1” bits in the accumulator.
Note:
1. The value presented by RS0 and RS1 selects the corre-
sponding register bank.
RS1
RS0
Register Bank
Address
0
00H-07H
0
1
08H-0FH
1
0
2
10H-17H
1
3
18H-1FH
PCON:
Power Control Register. Not Bit Addressable.
7
6
54321
0
SMOD
—
GF1
GF0
PD
IDL
Register Description:
SMOD
Double baud rate bit. If Timer 1 is used to generate
baud rate and SMOD=1, the baud rate is doubled
when the serial port is used in modes 1, 2, or 3.
—
Not implemented, reserve for future use.(1)
—
Not implemented, reserve for future use.(1)
—
Not implemented, reserve for future use.(1)
GF1
General purpose flag bit.
GF0
General purpose flag bit.
PD
Power-down bit. Setting this bit activates power-
down mode.
IDL
Idle mode bit. Setting this bit activates idle mode.
If 1s are written to PD and IDL at the same time,
PD takes precedence.
Note:
1. User software should not write 1s to reserved bits. These
bits may be used in future products to invoke new features.
IE:
Interrupt Enable Register. Bit Addressable.
7
6
54321
0
EA
—
ES
ET1
EX1
ET0 EX0
Register Description:
EA
IE.7
Disable all interrupts. If EA=0, no
interrupt will be acknowledged. If EA=1,
each interrupt source is individually
enabled or disabled by setting or
clearing its enable bit.
—
IE.6
Not implemented, reserve for future
use.(5)
—
IE.5
Not implemented, reserve for future
use.(5)
ES
IE.4
Enable or disable the serial port
interrupt.
ET1
IE.3
Enable or disable the Timer 1 overflow
interrupt.
EX1
IE.2
Enable or disable External Interrupt 1.
ET0
IE.1
Enable or disable the Timer 0 overflow
interrupt.
EX0
IE.0
Enable or disable External Interrupt 0.
Note: To use any of the interrupts in the 80C51 Family, the
following three steps must be taken:
1. Set the EA (enable all) bit in the IE register to 1.
2. Set the coresponding individual interrupt enable bit in
the IE register to 1.
3. Begin the interrupt service routine at the corresponding
Vector Address of that interrupt (see below).
Interrupt Source
Vector Address
IE0
0003H
TF0
000BH
IE1
0013H
TF1
001BH
RI & TI
0023H
4. In addition, for external interrupts, pins
INT0 and INT1
(P3.2 and P3.3) must be set to 1, and depending on
whether the interrupt is to be level or transition acti-
vated, bits IT0 or IT1 in the TCON register may need to
be set to 0 or 1.
ITX = 0 level activated (X = 0, 1)
ITX = 1 transition activated
5. User software should not write 1s to reserved bits. These
bits may be used in future products to invoke new
features.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| IS89LV51-12PQ | 8-BIT, FLASH, 12 MHz, MICROCONTROLLER, PQFP44 |
| IS89LV51-24WI | 8-BIT, FLASH, 24 MHz, MICROCONTROLLER, PDIP40 |
| IS89LV51-40W | 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PDIP40 |
| IS89LV52-12W | 8-BIT, FLASH, 12 MHz, MICROCONTROLLER, PDIP40 |
| IS89LV52-40PQI | 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQFP44 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IS89C51-40PQI | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| IS89C51-40W | 制造商:ISSI 制造商全稱:Integrated Silicon Solution, Inc 功能描述:CMOS SINGLE CHIP 8-BIT MICROCONTROLLER with 4-Kbytes of FLASH |
| IS89C51-40WI | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| IS89C52 | 制造商:ISSI 制造商全稱:Integrated Silicon Solution, Inc 功能描述:CMOS SINGLE CHIP 8-BIT MICROCONTROLLER with 8-Kbytes of FLASH |
| IS89C52-12PL | 制造商:ISSI 制造商全稱:Integrated Silicon Solution, Inc 功能描述:CMOS SINGLE CHIP 8-BIT MICROCONTROLLER with 8-Kbytes of FLASH |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。