AT89C5130A-M Atmel Corporation, AT89C5130A-M Datasheet - Page 86

• Manufacturer Part Number: AT89C5130A-M
• Manufacturer: Atmel Corporation

Specifications of AT89C5130A-M

• Flash (kbytes): 16 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): 2.7 to 5.5
• Timers: 4
• Isp: UART/USB
• Watchdog: Yes

86
AT89C5130A/31A-M
Table 16-7.
IPH1 - Interrupt Priority High Register (B3h)
Reset Value = X0XX X000b
Not bit addressable
Number
Bit
7
6
5
4
3
2
1
0
7
-
Mnemonic
PUSBH
IPH1 Register
PTWIH
PUSBH
PSPIH
PKBH
Bit
-
-
-
-
6
Description
Reserved
The value read from this bit is indeterminate. Do not set this bit.
USB Interrupt Priority High bit
PUSBH
0
0
1
1
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
SPI Interrupt Priority High bit
PSPIH
0
0
1
1
TWI Interrupt Priority High bit
PTWIH
0
0
1
1
Keyboard Interrupt Priority High bit
PKBH
0
0
1
1
5
-
PUSBL
0
1
0
1
PSPIL
0
1
0
1
PTWIL
0
1
0
1
PKBL
0
1
0
1
4
Priority Level
Lowest
Highest
Priority Level
Lowest
Highest
Priority Level
Lowest
Highest
Priority Level
Lowest
Highest
-
3
-
PSPIH
2
PTWIH
1
4337K–USB–04/08
PKBH
0