AT89C51SND1C-ROTUL Atmel, AT89C51SND1C-ROTUL Datasheet - Page 188

• Manufacturer Part Number: AT89C51SND1C-ROTUL
• Description: IC 8051 MCU FLASH 64K MP3 80TQFP
• Manufacturer: Atmel
• Series: 89Cr

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: -

23.3.1.3
23.3.2
23.3.2.1
23.3.2.2
188
AT8xC51SND1C
External Data 8-bit Bus Cycles
Waveforms
Definition of Symbols
Timings
Figure 23-9. External Program Bus Cycle - Read Waveforms
Table 164. External Data 8-bit Bus Cycles Timing Symbol Definitions
Test conditions: capacitive load on all pins= 50 pF.
Table 165. External Data 8-bit Bus Cycle - Read AC Timings
V
DD
= 2.7 to 3.3 V, T
A
D
L
Q
R
W
Symbol
T
T
T
T
T
CLCL
AVLL
LLAX
LHLL
LLRL
PSEN
Clock Period
ALE Pulse Width
Address Valid to ALE Low
Address hold after ALE Low
ALE Low to RD Low
ALE
P0
P2
A
= -40 to +85°C
Signals
Parameter
D7:0
Address
Data In
ALE
Data Out
RD
WR
T
T
LLPL
LHLL
T
AVLL
A7:0
T
LLAX
T
T
PLAZ
2·T
3·T
PLIV
T
T
A15:8
CLCL
CLCL
Min
CLCL
CLCL
50
Standard Mode
T
Variable Clock
PLPH
T
-20
-20
Instruction In
-15
-30
PXIX
D7:0
T
T
PXIZ
PXAV
Max
H
L
V
X
Z
A7:0
0.5·T
0.5·T
1.5·T
T
CLCL
Min
50
CLCL
CLCL
CLCL
Variable Clock
A15:8
-15
Conditions
X2 Mode
-20
-20
-30
Instruction In
High
Low
Valid
No Longer Valid
Floating
D7:0
4109L–8051–02/08
Max
Unit
ns
ns
ns
ns
ns