AT89C51SND1C-ROTUL Atmel, AT89C51SND1C-ROTUL Datasheet - Page 40
AT89C51SND1C-ROTUL
Manufacturer Part Number
AT89C51SND1C-ROTUL
Description
IC 8051 MCU FLASH 64K MP3 80TQFP
Manufacturer
Atmel
Series
89Cr
Datasheet
1.AT80C51SND1C-ROTIL.pdf
(213 pages)
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
-
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AT8xC51SND1C
Table 50. Priority Levels
A low-priority interrupt is always interrupted by a higher priority interrupt but not by another inter-
rupt of lower or equal priority. Higher priority interrupts are serviced before lower priority
interrupts. The response to simultaneous occurrence of equal priority interrupts is determined by
an internal hardware polling sequence detailed in Table 51. Thus, within each priority level there
is a second priority structure determined by the polling sequence. The interrupt control system is
shown in Figure 9-1.
Table 51. Priority within Same Level
Interrupt Name
INT0
Timer 0
INT1
Timer 1
Serial Port
MP3 Decoder
Audio Interface
MMC Interface
Two Wire Controller
SPI Controller
A to D Converter
Keyboard
Reserved
USB
Reserved
IPHxx
0
0
1
1
14 (Lowest Priority)
0 (Highest Priority)
Priority Number
10
11
12
13
IPLxx
1
2
3
4
5
6
7
8
9
0
1
0
1
Priority Level
0 Lowest
1
2
3 Highest
Interrupt Address
C:000Bh
C:001Bh
C:002Bh
C:003Bh
C:004Bh
C:005Bh
C:006Bh
C:0003h
C:0013h
C:0023h
C:0033h
C:0043h
C:0053h
C:0063h
C:0073h
Vectors
Interrupt Request Flag
(H) or by Software (S)
Cleared by Hardware
H if edge, S if level
H if edge, S if level
4109L–8051–02/08
H
H
S
S
S
S
S
S
S
S
S
-
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