AT89C5122D-RDRIM Atmel, AT89C5122D-RDRIM Datasheet - Page 160

• Manufacturer Part Number: AT89C5122D-RDRIM
• Description: IC MCU 80C51 W/SMART CARD 64VQFP
• Manufacturer: Atmel
• Series: 89Cr

Specifications of AT89C5122D-RDRIM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 48MHz
• Connectivity: SmartCard, SPI, UART/USART, USB
• Peripherals: LED, POR, WDT
• Number Of I /o: 46
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TQFP, 64-VQFP
• For Use With: AT89STK-10 - KIT EVAL APPL MASS STORAGEAT89STK-03 - KIT STARTER FOR MCU AT8XC5122/23
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -
• Other names: AT89C5122DRDRIMTR

Registers
160
AT83R5122, AT8xC5122/23
Table 98. Interrupt Enable Register 0 - IEN0 (A8h)
Reset Value = 0000 0000b (Bit addressable)
Number
6 - 5
Bit
EA
7
7
4
3
2
1
0
Mnemonic Description
ET1
EX1
ET0
EX0
Bit
EA
ES
6
-
-
Enable All interrupt bit
Cleared to disable all interrupts.
Set to enable all interrupts.
Reserved
The value read from this bit is indeterminate. Do not change these bits.
Serial port Enable bit
Cleared to disable serial port interrupt.
Set to enable serial port interrupt.
Timer 1 overflow interrupt Enable bit
Cleared to disable timer 1 overflow interrupt.
Set to enable timer 1 overflow interrupt.
External interrupt 1 Enable bit
Cleared to disable external interrupt 1.
Set to enable external interrupt 1.
Timer 0 overflow interrupt Enable bit
Cleared to disable timer 0 overflow interrupt.
Set to enable timer 0 overflow interrupt.
External interrupt 0 Enable bit
Cleared to disable external interrupt 0.
Set to enable external interrupt 0.
5
-
ES
4
ET1
3
EX1
2
ET0
1
4202F–SCR–07/2008
EX0
0