AT89C5132 Atmel Corporation, AT89C5132 Datasheet - Page 38

• Manufacturer Part Number: AT89C5132
• Manufacturer: Atmel Corporation

Specifications of AT89C5132

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 20 MHz
• Cpu: 8051-12C
• Max I/o Pins: 44
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 1
• Uart: 1
• Adc Channels: 2
• Adc Resolution (bits): 10
• Adc Speed (ksps): 22.7
• Sram (kbytes): 2.25
• Self Program Memory: API
• Operating Voltage (vcc): 2.7 to 3.6
• Timers: 2
• Isp: UART/USB
• Watchdog: Yes

10.3
38
Registers
AT89C5132
Table 35. IEN0 Register
IEN0 (S:A8h) – Interrupt Enable Register 0
Reset Value = 0000 0000b
Table 36. IEN1 Register
IEN1 (S:B1h) – Interrupt Enable Register 1
Bit Number
EA
7
7
6
5
4
3
2
1
0
7
-
Mnemonic
EAUD
EAUD
EUSB
ET1
EX1
ET0
EX0
Bit
EA
ES
6
–
6
Description
Enable All Interrupt Bit
Set to enable all interrupts.
Clear to disable all interrupts.
If EA = 1, each interrupt source is individually enabled or disabled by setting or clearing
its interrupt enable bit.
Audio Interface Interrupt Enable Bit
Set to enable audio interface interrupt.
Clear to disable audio interface interrupt.
Reserved
The values read from this bit is always 0. Do not set this bit.
Serial Port Interrupt Enable Bit
Set to enable serial port interrupt.
Clear to disable serial port interrupt.
Timer 1 Overflow Interrupt Enable Bit
Set to enable Timer 1 overflow interrupt.
Clear to disable Timer 1 overflow interrupt.
External Interrupt 1 Enable bit
Set to enable external interrupt 1.
Clear to disable external interrupt 1.
Timer 0 Overflow Interrupt Enable Bit
Set to enable timer 0 overflow interrupt.
Clear to disable timer 0 overflow interrupt.
External Interrupt 0 Enable Bit
Set to enable external interrupt 0.
Clear to disable external interrupt 0.
5
–
5
–
EKB
ES
4
4
EADC
ET1
3
3
ESPI
EX1
2
2
EI2C
ET0
1
1
4173E–USB–09/07
EMMC
EX0
0
0