P89V51RD2FN NXP Semiconductors, P89V51RD2FN Datasheet - Page 56

• 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
Fig 27. Interrupt structure
CCFn
SPIF
CF
brownout
ECCFn
SPIE
INT0#
INT1#
ECF
TF1
TF0
EXF2
TF2
RI
TI
0
1
0
1
Table 44.
Bit addressable; Reset value: 00H
Bit
Symbol
IT0
IT1
individual
enables
IEN0 - Interrupt enable register 0 (address A8H) bit allocation
IE0
IE1
EA
7
IE and IEA
registers
Rev. 05 — 12 November 2009
EC
6
global
disable
ET2
5
IP/IPH/IPA/IPAH
registers
ES
4
P89V51RB2/RC2/RD2
8-bit microcontrollers with 80C51 core
ET1
3
EX1
2
© NXP B.V. 2009. All rights reserved.
ET0
highest
priority
interrupt
1
002aaa544
interrupt
polling
sequence
lowest
priority
interrupt
EX0
56 of 80
0