AT89C5131A-L Atmel Corporation, AT89C5131A-L Datasheet - Page 81

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AT89C5131A-L

Manufacturer Part Number
AT89C5131A-L
Description
Manufacturer
Atmel Corporation
Datasheets

Specifications of AT89C5131A-L

Flash (kbytes)
32 Kbytes
Max. Operating Frequency
48 MHz
Cpu
8051-12C
Max I/o Pins
34
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
1
Twi (i2c)
1
Uart
1
Sram (kbytes)
1.25
Eeprom (bytes)
1024
Self Program Memory
API
Operating Voltage (vcc)
3.0 to 3.6
Timers
4
Isp
UART/USB
Watchdog
Yes
4338F–USB–08/07
Table 64. IEN1 Register
IEN1 - Interrupt Enable Register (B1h)
Reset Value = X0XX X000b
Not bit addressable
Number
Bit
7
6
5
4
3
2
1
0
7
-
Mnemonic
EUSB
EUSB
ETWI
ESPI
EKB
Bit
6
-
-
-
-
Description
Reserved
USB Interrupt Enable bit
Cleared to disable USB interrupt.
Set to enable USB interrupt.
Reserved
Reserved
Reserved
SPI interrupt Enable bit
Cleared to disable SPI interrupt.
Set to enable SPI interrupt.
TWI interrupt Enable bit
Cleared to disable TWI interrupt.
Set to enable TWI interrupt.
Keyboard interrupt Enable bit
Cleared to disable keyboard interrupt.
Set to enable keyboard interrupt.
5
-
4
-
3
-
ESPI
2
ETWI
1
EKB
0
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