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P89C662 Datasheet(PDF) 51 Page - NXP Semiconductors

Part # P89C662
Description  80C51 8-bit Flash microcontroller family
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Manufacturer  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

P89C662 Datasheet(HTML) 51 Page - NXP Semiconductors

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Philips Semiconductors
Product data
P89C660/P89C662/P89C664/
P89C668
80C51 8-bit Flash microcontroller family
16KB/32KB/64KB ISP/IAP Flash with 512B/1KB/2KB/8KB RAM
2002 Oct 28
51
PX0
IP (0B8H)
Priority Bit = 1 assigns high priority
Priority Bit = 0 assigns low priority
BIT
SYMBOL
FUNCTION
IP.7
PT2
Timer 2 interrupt priority bit.
IP.6
PPC
PCA interrupt priority bit
IP.5
PS1
Serial I/O1 (I2C) interrupt priority bit.
IP.4
PS0
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.
SU01455
PT0
PX1
PT1
PS0
PS1
PPC
PT2
0
1
2
3
4
5
6
7
Figure 36. IP Registers
PX0H
IPH (B7H)
Priority Bit = 1 assigns higher priority
Priority Bit = 0 assigns lower priority
BIT
SYMBOL
FUNCTION
IPH.7
PT2H
Timer 2 interrupt priority bit high.
IPH.6
PPCH
PCA interrupt priority bit
IPH.5
PS1H
Serial I/O (I2C) interrupt priority bit high.
IPH.4
PS0H
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.
SU01456
PT0H
PX1H
PT1H
PS0H
PS1H
PPCH
PT2H
0
1
2
3
4
5
6
7
Figure 37. IPH Registers
ET2
IEN1 (E8H)
Enable Bit = 1 enables the interrupt
Enable Bit = 0 disables the interrupt
BIT
SYMBOL
FUNCTION
IEN1.7
IEN1.6
IEN1.5
IEN1.4
IEN1.3
IEN1.2
IEN1.1
IEN1.0
ET2
Timer 2 interrupt enable bit.
SU01095
0
1
2
3
4
5
6
7
Figure 38. IEN1 Registers


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