AT89C51SND1C-7HTUL Atmel, AT89C51SND1C-7HTUL Datasheet - Page 45

• Manufacturer Part Number: AT89C51SND1C-7HTUL
• Description: IC MCU 64KB FLASH MEM 81-CBGA
• Manufacturer: Atmel
• Series: 89Cr

Specifications of AT89C51SND1C-7HTUL

• 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: 81-CBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

4109L–8051–02/08
Reset Value = X000 0000b
Table 55. IPH1 Register
IPH1 (S:B3h) – Interrupt Priority High Register 1
Reset Value = 0000 0000b
Number
Number
Bit
Bit
7
6
5
4
3
2
1
0
7
7
6
5
4
3
2
1
0
-
Mnemonic Description
Mnemonic Description
IPHMMC
IPHAUD
IPHUSB
IPHADC
IPHMP3
IPHUSB
IPHSPI
IPHI2C
IPHX1
IPHX0
IPHKB
IPHT1
IPHT0
IPHS
Bit
Bit
6
-
-
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Audio Interface Interrupt Priority Level MSB
Refer to Table 50 for priority level description.
MP3 Decoder Interrupt Priority Level MSB
Refer to Table 50 for priority level description.
Serial Port Interrupt Priority Level MSB
Refer to Table 50 for priority level description.
Timer 1 Interrupt Priority Level MSB
Refer to Table 50 for priority level description.
External Interrupt 1 Priority Level MSB
Refer to Table 50 for priority level description.
Timer 0 Interrupt Priority Level MSB
Refer to Table 50 for priority level description.
External Interrupt 0 Priority Level MSB
Refer to Table 50 for priority level description.
Reserved
The value read from this bit is always 0. Do not set this bit.
USB Interrupt Priority Level MSB
Refer to Table 50 for priority level description.
Reserved
The value read from this bit is always 0. Do not set this bit.
Keyboard Interrupt Priority Level MSB
Refer to Table 50 for priority level description.
A to D Converter Interrupt Priority Level MSB
Refer to Table 50 for priority level description.
SPI Interrupt Priority Level MSB
Refer to Table 50 for priority level description.
Two Wire Controller Interrupt Priority Level MSB
Refer to Table 50 for priority level description.
MMC Interrupt Priority Level MSB
Refer to Table 50 for priority level description.
5
-
IPHKB
4
IPHADC
3
AT8xC51SND1C
IPHSPI
2
IPHI2C
1
IPHMMC
0
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