AT80C51SND1C-ROTIL Atmel, AT80C51SND1C-ROTIL Datasheet - Page 132

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

Specifications of AT80C51SND1C-ROTIL

• 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: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Other names: AT80C51SND1CROTIL

17.1.1
132
AT8xC51SND1C
IDE Device Connection
Figure 17-2. IDE Write Waveforms
Notes:
Figure 17-3 and Figure 17-4 show 2 examples on how to interface up to 2 IDE devices to the
AT8xC51SND1C. In both examples P0 carries IDE low order data bits D7:0, P2 carries IDE high
order data bits D15:8, while RD and WR signals are respectively connected to the IDE nIOR and
nIOW signals. Other IDE control signals are generated by the external address latch outputs in
the first example while they are generated by some port I/Os in the second one. Using an exter-
nal latch will achieve higher transfer rate.
Figure 17-3. IDE Device Connection Example 1
Figure 17-4. IDE Device Connection Example 2
1.
2. When executing MOVX @Ri instruction, P2 outputs SFR content.
3. When executing MOVX @DPTR instruction, if DPHDIS is set (Page Access Mode), P2 out-
CPU Clock
WR
puts SFR content instead of DPH.
AT8xC51SND1C
AT8xC51SND1C
WR
ALE
signal may be stretched using M0 bit in AUXR register.
P0
P2
(1)
P0/AD7:0
P2/A15:8
P4.2:0
P4.4:3
P4.5
Px.y
ALE
WR
WR
RD
RD
P2
P0
P2
DPH or P2
DPL or Ri
Latch
(2),(3)
D15-8
D7:0
A2:0
nCS1:0
nRESET
nIOR
nIOW
D15-8
D7:0
A2:0
nCS1:0
nRESET
nIOR
nIOW
IDE Device 0
IDE Device 0
D15:8
D7:0
D15-8
D7:0
A2:0
nCS1:0
nRESET
nIOR
nIOW
D15-8
D7:0
A2:0
nCS1:0
nRESET
nIOR
nIOW
IDE Device 1
IDE Device 1
4109L–8051–02/08
P2