P89V51RD2FN NXP Semiconductors, P89V51RD2FN Datasheet - Page 57

• Manufacturer Part Number: P89V51RD2FN
• Description: MCU 8-Bit 89V 80C51 CISC 64KB Flash 5V 40-Pin PDIP Tube
• Manufacturer: NXP Semiconductors

Specifications of P89V51RD2FN

• Package: 40PDIP
• Device Core: 80C51
• Family Name: 89V
• Maximum Speed: 40 MHz
• Ram Size: 1 KB
• Program Memory Size: 64 KB
• Operating Supply Voltage: 5 V
• Data Bus Width: 8 Bit
• Program Memory Type: Flash
• Number Of Programmable I/os: 32
• Interface Type: SPI/UART
• Operating Temperature: -40 to 85 °C
• Number Of Timers: 3

NXP Semiconductors
P89V51RB2_RC2_RD2_5
Product data sheet
Table 45.
Table 46.
Bit addressable; Reset value: 00H
Table 47.
Table 48.
Bit addressable; Reset value: 00H
Table 49.
Table 50.
Not bit addressable; Reset value: 00H
Bit
7
6
5
4
3
2
1
0
Bit
7 to 4
3
2 to 0
Bit
7
6
5
4
3
2
1
0
Bit
Symbol
Bit
Symbol
Bit
Symbol
IEN0 - Interrupt enable register 0 (address A8H) bit description
IEN1 - Interrupt enable register 1 (address E8H) bit allocation
IEN1 - Interrupt enable register 1 (address E8H) bit description
IP0 - Interrupt priority 0 low register (address B8H) bit allocation
IP0 - Interrupt priority 0 low register (address B8H) bit description
IP0H - Interrupt priority 0 high register (address B7H) bit allocation
Symbol
EA
EC
ET2
ES
ET1
EX1
ET0
EX0
Symbol
-
EBO
-
Symbol
-
PPC
PT2
PS
PT1
PX1
PT0
PX0
7
7
7
-
-
-
Rev. 05 — 12 November 2009
PPCH
PPC
6
6
6
-
Description
Interrupt Enable Bit: EA = 1 interrupt(s) can be serviced, EA = 0
interrupt servicing disabled.
PCA Interrupt Enable bit.
Timer 2 Interrupt Enable.
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.
Brownout Interrupt Enable. 1 = enable, 0 = disable.
Reserved for future use. Should be set to ‘0’ by user programs.
Description
Reserved for future use. Should be set to ‘0’ by user programs.
PCA interrupt priority LOW bit.
Timer 2 interrupt priority LOW bit.
Serial Port interrupt priority LOW bit.
Timer 1 interrupt priority LOW bit.
External interrupt 1 priority LOW bit.
Timer 0 interrupt priority LOW bit.
External interrupt 0 priority LOW bit.
PT2H
PT2
5
5
5
-
PSH
PS
4
4
4
-
P89V51RB2/RC2/RD2
8-bit microcontrollers with 80C51 core
PT1H
EBO
PT1
3
3
3
PX1H
PX1
2
2
2
-
© NXP B.V. 2009. All rights reserved.
PT0H
PT0
1
1
1
-
PX0H
PX0
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0
0
0
-