AT89C5131-S3SIL Atmel, AT89C5131-S3SIL Datasheet - Page 80

• Manufacturer Part Number: AT89C5131-S3SIL
• Description: IC 8051 MCU FLASH 32K USB 52PLCC
• Manufacturer: Atmel
• Series: AT89C513xr

Specifications of AT89C5131-S3SIL

• Core Processor: C52X2
• Core Size: 8-Bit
• Speed: 48MHz
• Connectivity: I²C, SPI, UART/USART, USB
• Peripherals: LED, POR, PWM, WDT
• Number Of I /o: 34
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 4K x 8
• Ram Size: 1.25K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 52-PLCC
• For Use With: AT89STK-10 - KIT EVAL APPL MASS STORAGEAT89STK-05 - KIT STARTER FOR AT89C5131
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Data Converters: -

80
AT89C5131
Table 65. IEN1 Register
IEN1 - Interrupt Enable Register (B1h)
Reset Value = XXXX X000b
Bit addressable
Number
Bit
7
6
5
4
3
2
1
0
7
-
Mnemonic
EUSB
EUSB
ESPI
EKB
Bit
6
-
-
-
-
-
Description
Reserved
USB Interrupt Enable bit
Reserved
Reserved
Reserved
SPI interrupt Enable bit
Cleared to disable SPI interrupt.
Set to enable SPI interrupt.
Reserved
Keyboard interrupt Enable bit
Cleared to disable keyboard interrupt.
Set to enable keyboard interrupt.
5
-
4
-
3
-
ESPI
2
1
-
4136B–USB–09/03
EKB
0