AT80C51SND1C-ROTIL Atmel, AT80C51SND1C-ROTIL Datasheet - Page 202

• 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

23.4.6
23.4.6.1
23.4.6.2
23.4.6.3
202
AT8xC51SND1C
External Clock Drive and Logic Level References
Definition of symbols
Timings
Waveforms
Table 181. External Clock Timing Symbol Definitions
External Clock AC Timings
V
Figure 23-25. External Clock Waveform
Figure 23-26. AC Testing Input/Output Waveforms
Note:
Figure 23-27. Float Waveforms
DD
= 2.7 to 3.3 V, T
1. During AC testing, all inputs are driven at V
2. Timing measurements are made on all outputs at V
C
0.45 V
Symbol
T
T
T
T
T
T
CHCX
V
CLCL
CLCX
CLCH
CHCL
CR
DD
V
LOAD
- 0.5
A
V
DD
V
= -40 to +85°C
Signals
0.45 V
IL
V
- 0.5
V
V
IH1
Clock Period
High Time
Low Time
Rise Time
Fall Time
Cyclic Ratio in X2 mode
LOAD
Clock
LOAD
+ 0.1 V
- 0.1 V
INPUTS
T
CHCL
0.7 V
0.3 V
Parameter
DD
DD
Timing Reference Points
DD
-0.5 V for a logic 1 and 0.45 V for a logic 0.
T
CLCX
IH
T
CLCH
min for a logic 1 and V
H
L
X
T
CLCL
Min
50
10
10
40
3
3
V
V
Conditions
OH
OL
V
V
T
IL
IH
+ 0.1 V
- 0.1 V
CHCX
max
min
OUTPUTS
Max
IL
High
Low
No Longer Valid
60
max for a logic 0.
4109L–8051–02/08
Unit
ns
ns
ns
ns
ns
%