AT89C51SND1C-ROTUL Atmel, AT89C51SND1C-ROTUL Datasheet - Page 46

• Manufacturer Part Number: AT89C51SND1C-ROTUL
• Description: IC 8051 MCU FLASH 64K MP3 80TQFP
• Manufacturer: Atmel
• Series: 89Cr

Specifications of AT89C51SND1C-ROTUL

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, IDE/ATAPI, MMC, SPI, UART/USART, USB
• Peripherals: Audio, I²S, MP3, PCM, POR, WDT
• Number Of I /o: 44
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 2.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.3 V
• Data Converters: A/D 2x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-TQFP, 80-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

9.3.0.3
46
AT8xC51SND1C
Table 56. IPL0 Register
IPL0 (S:B8h) - Interrupt Priority Low Register 0
Reset Value = X000 0000b
Table 57. IPL1 Register
IPL1 (S:B2h) – Interrupt Priority Low Register 1
Number
Bit
7
7
6
5
4
3
2
1
0
7
-
-
Mnemonic Description
IPLAUD
IPLUSB
IPLAUD
IPLMP3
IPLX1
IPLX0
IPLT1
IPLT0
IPLS
Bit
6
6
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Audio Interface Interrupt Priority Level LSB
Refer to Table 50 for priority level description.
MP3 Decoder Interrupt Priority Level LSB
Refer to Table 50 for priority level description.
Serial Port Interrupt Priority Level LSB
Refer to Table 50 for priority level description.
Timer 1 Interrupt Priority Level LSB
Refer to Table 50 for priority level description.
External Interrupt 1 Priority Level LSB
Refer to Table 50 for priority level description.
Timer 0 Interrupt Priority Level LSB
Refer to Table 50 for priority level description.
External Interrupt 0 Priority Level LSB
Refer to Table 50 for priority level description.
IPLMP3
5
5
-
IPLKB
IPLS
4
4
IPLADC
IPLT1
3
3
IPLSPI
IPLX1
2
2
IPLI2C
IPLT0
1
1
4109L–8051–02/08
IPLMMC
IPLX0
0
0