AT83C51SND1C_03 ATMEL [ATMEL Corporation], AT83C51SND1C_03 Datasheet - Page 199

• Manufacturer Part Number: AT83C51SND1C_03
• Description: Single-Chip Flash Microcontroller with MP3 Decoder and Human Interface
• Manufacturer: ATMEL [ATMEL Corporation]

Waveforms
External Clock Drive and Logic Level References
Definition of symbols
Timings
Waveforms
4109E–8051–06/03
Figure 155. FLASH Memory - ISP Waveforms
Note:
Figure 156. FLASH Memory - Internal Busy Waveforms
Table 176. External Clock Timing Symbol Definitions
Table 177. External Clock AC Timings
V
Figure 157. External Clock Waveform
C
DD
0.45 V
= 2.7 to 3.3 V, T
Symbol
T
T
T
T
T
T
CHCX
CLCH
CHCL
V
CLCL
CLCX
CR
1. ISP must be driven through a pull-down resistor (see Section “In System Program-
DD
FBUSY bit
ISP
- 0.5
RST
ming”, page 185).
(1)
V
Signals
IL
V
IH1
Clock Period
High Time
Low Time
Rise Time
Fall Time
Cyclic Ratio in X2 mode
Clock
A
= -40 to +85°C
T
CHCL
Parameter
T
SVRL
T
CLCX
T
T
BHBL
T
CLCH
RLSX
H
L
X
AT8xC51SND1C
T
CLCL
Min
50
10
10
40
3
3
Conditions
T
CHCX
Max
High
Low
No Longer Valid
60
Unit
ns
ns
ns
ns
ns
%
199