AT80C51SND1C-ROTUL Atmel, AT80C51SND1C-ROTUL Datasheet - Page 133

• Manufacturer Part Number: AT80C51SND1C-ROTUL
• Description: IC MCU FLASH MP3 DECODER 80-TQFP
• Manufacturer: Atmel
• Series: 80Cr

Specifications of AT80C51SND1C-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 Type: ROMless
• Ram Size: 2.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.3 V
• Data Converters: A/D 2x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-TQFP, 80-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

17.2
4109L–8051–02/08
Registers
Table 122. External Data Memory Interface Signals
Table 123. DAT16H Register
DAT16H (S:F9h) – Data 16 High Order Byte
Reset Value =XXXX XXXXb
Signal
Name
AD7:0
A15:8
Number
ALE
WR
RD
7 - 0
D15
Bit
7
Type
I/O
I/O
O
O
O
Mnemonic Description
D15:8
D14
Bit
6
Description
Address Lines
Upper address lines for the external bus.
Multiplexed higher address and data lines for the IDE interface.
Address/Data Lines
Multiplexed lower address and data lines for the IDE interface.
Address Latch Enable
ALE signals indicates that valid address information is available on lines
AD7:0.
Read
Read signal output to external data memory.
Write
Write signal output to external memory.
Data 16 High Order Byte
When EXT16 bit is set, DAT16H is set by software with the high order data Byte
prior any MOVX write instruction.
When EXT16 bit is set, DAT16H contains the high order data Byte after any
MOVX read instruction.
D13
5
D12
4
D11
3
AT8xC51SND1C
D10
2
D9
1
Alternate
Function
P2.7:0
P0.7:0
P3.7
P3.6
D8
0
-
133