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參數(shù)資料
| 型號： | P80C52X2BN |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 33 MHz, MICROCONTROLLER, PDIP40 |
| 封裝： | 0.600 INCH, PLASTIC, MO-015, SOT-129-1, DIP-40 |
| 文件頁數(shù)： | 28/62頁 |
| 文件大小： | 404K |
| 代理商： | P80C52X2BN |
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Philips Semiconductors
Product data
P80C3xX2; P80C5xX2;
P87C5xX2
80C51 8-bit microcontroller family
4K/8K/16K/32K ROM/OTP, low voltage (2.7 to 5.5 V),
low power, high speed (30/33 MHz)
2002 Jan 24
34
EX0
Enable Bit = 1 enables the interrupt.
Enable Bit = 0 disables it.
BIT
SYMBOL
FUNCTION
IE.7
EA
Global disable bit. If EA = 0, all interrupts are disabled. If EA = 1, each interrupt can be individually
enabled or disabled by setting or clearing its enable bit.
IE.6
—
Not implemented. Reserved for future use.
IE.5
ET2
Timer 2 interrupt enable bit.
IE.4
ES
Serial Port interrupt enable bit.
IE.3
ET1
Timer 1 interrupt enable bit.
IE.2
EX1
External interrupt 1 enable bit.
IE.1
ET0
Timer 0 interrupt enable bit.
IE.0
EX0
External interrupt 0 enable bit.
SU01522
ET0
EX1
ET1
ES
ET2
—
EA
0
1
2
3
4
5
6
7
IE
Address = 0A8H
Bit Addressable
Reset Value = 0X000000B
Figure 22. Interrupt Enable (IE) Register
PX0
Priority Bit = 1 assigns higher priority
Priority Bit = 0 assigns lower priority
BIT
SYMBOL
FUNCTION
IP.7
—
Not implemented, reserved for future use.
IP.6
—
Not implemented, reserved for future use.
IP.5
PT2
Timer 2 interrupt priority bit.
IP.4
PS
Serial Port interrupt priority bit.
IP.3
PT1
Timer 1 interrupt priority bit.
IP.2
PX1
External interrupt 1 priority bit.
IP.1
PT0
Timer 0 interrupt priority bit.
IP.0
PX0
External interrupt 0 priority bit.
SU01523
PT0
PX1
PT1
PS
PT2
—
0
1
2
3
4
5
6
7
IP
Address = 0B8H
Bit Addressable
Reset Value = xx000000B
Figure 23. Interrupt Priority (IP) Register
PX0H
Priority Bit = 1 assigns higher priority
Priority Bit = 0 assigns lower priority
BIT
SYMBOL
FUNCTION
IPH.7
—
Not implemented, reserved for future use.
IPH.6
—
Not implemented, reserved for future use.
IPH.5
PT2H
Timer 2 interrupt priority bit high.
IPH.4
PSH
Serial Port interrupt priority bit high.
IPH.3
PT1H
Timer 1 interrupt priority bit high.
IPH.2
PX1H
External interrupt 1 priority bit high.
IPH.1
PT0H
Timer 0 interrupt priority bit high.
IPH.0
PX0H
External interrupt 0 priority bit high.
SU01524
PT0H
PX1H
PT1H
PSH
PT2H
—
0
1
2
3
4
5
6
7
IPH
Address = B7H
Bit Addressable
Reset Value = xx000000B
Figure 24. Interrupt Priority HIGH (IPH) Register
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