p89cv51rb2 NXP Semiconductors, p89cv51rb2 Datasheet - Page 51

• 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
Fig 25. Interrupt structure
CCFn
SPIF
CF
ECCFn
SPIE
INT0#
INT1#
ECF
TF1
TF0
EXF2
TF2
RI
TI
0
1
0
1
Table 42.
Bit addressable; reset value: 00H.
Table 43.
Bit
7
6
5
Bit
Symbol
IT0
IT1
individual
enables
IE - Interrupt enable register 0 (address A8H) bit allocation
IE - Interrupt enable register 0 (address A8H) bit description
IE0
IE1
Symbol
EA
EC
ET2
EA
7
IE and IEA
registers
Rev. 01 — 5 October 2007
EC
6
Description
Interrupt Enable. EA = 1: interrupt(s) can be serviced;
EA = 0: interrupt servicing disabled.
PCA interrupt Enable.
Timer 2 interrupt Enable.
global
disable
ET2
5
IP/IPH/IPA/IPAH
registers
P89CV51RB2/RC2/RD2
ES
4
ET1
3
80C51 with 1 kB RAM, SPI
EX1
2
© NXP B.V. 2007. All rights reserved.
ET0
highest
priority
interrupt
1
002aac965
interrupt
polling
sequence
lowest
priority
interrupt
EX0
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