AT89C51SND1C-7HTUL Atmel, AT89C51SND1C-7HTUL Datasheet - Page 8

• 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: -

8
AT8xC51SND1C
Table 4. Audio Interface Signal Description
Table 5. USB Controller Signal Description
Table 6. MutiMediaCard Interface Signal Description
MCMD
Signal
Signal
Signal
Signal
DOUT
MCLK
Name
Name
DCLK
Name
Name
MDAT
DSEL
SCLK
D+
T0
T1
D-
Type
Type
Type
Type
I/O
I/O
I/O
I/O
O
O
O
O
O
I
I
Description
Timer 0 External Clock Input
When timer 0 operates as a counter, a falling edge on the T0 pin
increments the count.
Timer 1 External Clock Input
When timer 1 operates as a counter, a falling edge on the T1 pin
increments the count.
Description
DAC Data Bit Clock
DAC Audio Data
DAC Channel Select Signal
DSEL is the sample rate clock output.
DAC System Clock
SCLK is the oversampling clock synchronized to the digital audio data
(DOUT) and the channel selection signal (DSEL).
Description
USB Positive Data Upstream Port
This pin requires an external 1.5 KΩ pull-up to V
operation.
USB Negative Data Upstream Port
Description
MMC Clock output
Data or command clock transfer.
MMC Command line
Bidirectional command channel used for card initialization and data
transfer commands. To avoid any parasitic current consumption,
unused MCMD input must be polarized to V
MMC Data line
Bidirectional data channel. To avoid any parasitic current consumption,
unused MDAT input must be polarized to V
DD
DD
or V
or V
DD
SS
SS
for full speed
.
.
4109L–8051–02/08
Alternate
Alternate
Alternate
Alternate
Function
Function
Function
Function
P3.4
P3.5
-
-
-
-
-
-
-
-
-