AT89S8252-16JA ATMEL [ATMEL Corporation], AT89S8252-16JA Datasheet - Page 20

• Manufacturer Part Number: AT89S8252-16JA
• Description: 8-Bit Microcontroller with 8K Bytes Flash
• Manufacturer: ATMEL [ATMEL Corporation]

Table 10. Interrupt Enable (IE) Register
Figure 10. Interrupt Sources
20
(MSB)(LSB)
User software should never write 1s to unimplemented bits, because they may be used in future AT89 products.
Symbol
EX1
EX0
ET2
ET1
ET0
EA
ES
Enable Bit = 1 enables the interrupt.
Enable Bit = 0 disables the interrupt.
–
AT89S8252
EA
–
Position
IE.7
IE.6
IE.5
IE.4
IE.3
IE.2
IE.1
IE.0
ET2
Function
source is individually enabled or disabled by setting or clearing its enable bit.
Reserved.
Disables all interrupts. If EA = 0, no interrupt is acknowledged. If EA = 1, each interrupt
Timer 2 interrupt enable bit.
SPI and UART interrupt enable bit.
Timer 1 interrupt enable bit.
External interrupt 1 enable bit.
Timer 0 interrupt enable bit.
External interrupt 0 enable bit.
ES
ET1
EX1
ET0
EX0
0401F–MICRO–11/03