AT89S8252-24PC Atmel, AT89S8252-24PC Datasheet - Page 20
![MCU W/SPI 8KB FLSH 2K EEP 40-DIP](/photos/6/70/67049/453-40-dip_sml.jpg)
AT89S8252-24PC
Manufacturer Part Number
AT89S8252-24PC
Description
MCU W/SPI 8KB FLSH 2K EEP 40-DIP
Manufacturer
Atmel
Series
89Sr
Datasheet
1.AT89S8252-24AC.pdf
(41 pages)
Specifications of AT89S8252-24PC
Core Processor
8051
Core Size
8-Bit
Speed
24MHz
Connectivity
SPI, UART/USART
Peripherals
POR, WDT
Number Of I /o
32
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Eeprom Size
2K x 8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 6 V
Oscillator Type
Internal
Operating Temperature
0°C ~ 70°C
Package / Case
40-DIP (0.600", 15.24mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Data Converters
-
Other names
AT89S825224PC
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT89S8252-24PC
Manufacturer:
ATM
Quantity:
4 390
Company:
Part Number:
AT89S8252-24PC
Manufacturer:
ATM
Quantity:
4 390
Part Number:
AT89S8252-24PC
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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
ET2
ET1
EX1
ET0
EX0
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
Disables all interrupts. If EA = 0, no interrupt is acknowledged. If EA = 1, each interrupt
source is individually enabled or disabled by setting or clearing its enable bit.
Reserved.
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
0401G–MICRO–3/06