P89CV51RC2FA NXP Semiconductors, P89CV51RC2FA Datasheet - Page 55

• Manufacturer Part Number: P89CV51RC2FA
• Description: MCU 8-Bit 89C 80C51 CISC 32KB Flash 5V 44-Pin PLCC Tube
• Manufacturer: NXP Semiconductors

Specifications of P89CV51RC2FA

• Package: 44PLCC
• Device Core: 80C51
• Family Name: 89C
• Maximum Speed: 40 MHz
• Operating Supply Voltage: 5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 32
• Interface Type: SPI/UART
• Number Of Timers: 3
• Ram Size: 1 KB
• Program Memory Size: 32 KB
• Program Memory Type: Flash
• Operating Temperature: -40 to 85 °C

NXP Semiconductors
P89CV51RB2_RC2_RD2_3
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
Symbol
Bit
7
6
5
4
3
2
1
0
Bit
Symbol
Bit
7
6
5
4
3
2
1
0
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. 03 — 25 August 2009
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. 2009. All rights reserved.
PT0H
PT0
1
1
PX0H
PX0
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0
0