p89cv51rb2 NXP Semiconductors, p89cv51rb2 Datasheet - Page 52

• Manufacturer Part Number: p89cv51rb2
• Description: P89cv51rb2/rc2/rd2 8-bit 80c51 5 V Low Power 64 Kb Flash Microcontroller With 1 Kb Ram, Spi, 6-clock Cpu With 6/12-clock Peripherals
• Manufacturer: NXP Semiconductors

NXP Semiconductors
P89CV51RB2_RC2_RD2_1
Product data sheet
Table 43.
Table 44.
Bit addressable; reset value: 00H.
Table 45.
Table 46.
Not bit addressable; reset value: 00H.
Table 47.
Bit
4
3
2
1
0
Bit
7
6
5
4
3
2
1
0
Bit
7
6
5
4
3
2
1
0
Bit
Symbol
Bit
Symbol
IE - Interrupt enable register 0 (address A8H) bit description
IP - Interrupt priority low register (address B8H) bit allocation
IP - Interrupt priority low register (address B8H) bit description
IPH - Interrupt priority high register (address B7H) bit allocation
IPH - Interrupt priority high register (address B7H) bit description
Symbol
ES
ET1
EX1
ET0
EX0
Symbol
-
PPC
PT2
PS
PT1
PX1
PT0
PX0
Symbol
-
PPCH
PT2H
PSH
PT1H
PX1H
PT0H
PX0H
7
7
-
-
PPCH
PPC
Rev. 01 — 5 October 2007
6
6
Description
Serial port interrupt Enable.
Timer 1 overflow interrupt Enable.
External interrupt 1 Enable.
Timer 0 overflow interrupt Enable.
External interrupt 0 Enable.
Description
Reserved for future use. Should be set to 0 by user programs.
PCA interrupt Priority Low.
Timer 2 interrupt Priority Low.
Serial Port interrupt Priority Low.
Timer 1 interrupt Priority Low.
External interrupt 1 Priority Low.
Timer 0 interrupt Priority Low.
External interrupt 0 Priority Low.
Description
Reserved for future use. Should be set to 0 by user programs.
PCA interrupt Priority High.
Timer 2 interrupt Priority High.
Serial Port interrupt Priority High.
Timer 1 interrupt Priority High.
External interrupt 1 Priority High.
Timer 0 interrupt Priority High.
External interrupt 0 Priority High.
PT2H
PT2
5
5
P89CV51RB2/RC2/RD2
PSH
PS
4
4
PT1H
PT1
3
3
80C51 with 1 kB RAM, SPI
PX1H
PX1
2
2
…continued
© NXP B.V. 2007. All rights reserved.
PT0H
PT0
1
1
PX0H
PX0
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0
0