at89c5131 ATMEL Corporation, at89c5131 Datasheet - Page 83

• Manufacturer Part Number: at89c5131
• Description: 8-bit Flash Microcontroller With Full Speed Usb Device At89c5131
• Manufacturer: ATMEL Corporation

82
AT89C5131
Table 67. IPH1 Register
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
PUSBH
PTWIH
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 PUSBL Priority Level
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 PSPIL Priority Level
0
0
1
1
TWI Interrupt Priority High bit
PTWIH PTWIL Priority Level
0
0
1
1
Keyboard Interrupt Priority High bit
PKBH PKBL
0
0
1
1
5
-
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Lowest
Highest
Lowest
Highest
Lowest
Highest
Priority Level
Lowest
Highest
4
-
3
-
PSPIH
2
PTWIH
1
4136C–USB–04/05
PKBH
0