ATMEGA8515L8AU

Manufacturer Part NumberATMEGA8515L8AU
DescriptionTQFP44
ManufacturerATMEL Corporation
ATMEGA8515L8AU datasheet
 

Specifications of ATMEGA8515L8AU

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Table 102. External Data Memory Characteristics, 2.7 - 5.5 Volts, No Wait-state (Continued)
Symbol
Parameter
12
t
RD Pulse Width
RLRH
13
t
Data Setup to WR Low
DVWL
14
t
Data Hold After WR High
WHDX
15
t
Data Valid to WR High
DVWH
16
t
WR Pulse Width
WLWH
Notes:
1. This assumes 50% clock duty cycle. The half period is actually the high time of the external clock, XTAL1.
2. This assumes 50% clock duty cycle. The half period is actually the low time of the external clock, XTAL1.
Table 103. External Data Memory Characteristics, 2.7 - 5.5 Volts, SRWn1 = 0, SRWn0 = 1
Symbol
Parameter
0
1/t
Oscillator Frequency
CLCL
10
t
Read Low to Data Valid
RLDV
12
t
RD Pulse Width
RLRH
15
t
Data Valid to WR High
DVWH
16
t
WR Pulse Width
WLWH
Table 104. External Data Memory Characteristics, 2.7 - 5.5 Volts, SRWn1 = 1, SRWn0 = 0
Symbol
Parameter
0
1/t
Oscillator Frequency
CLCL
10
t
Read Low to Data Valid
RLDV
12
t
RD Pulse Width
RLRH
15
t
Data Valid to WR High
DVWH
16
t
WR Pulse Width
WLWH
Table 105. External Data Memory Characteristics, 2.7 - 5.5 Volts, SRWn1 = 1, SRWn0 = 1
Symbol
Parameter
0
1/t
Oscillator Frequency
CLCL
10
t
Read Low to Data Valid
RLDV
12
t
RD Pulse Width
RLRH
14
t
Data Hold After WR High
WHDX
15
t
Data Valid to WR High
DVWH
16
t
WR Pulse Width
WLWH
ATmega8515(L)
204
4 MHz Oscillator
Min
Max
Min
235
1.0t
CLCL
105
0.5t
CLCL
235
1.0t
CLCL
250
1.0t
235
1.0t
CLCL
4 MHz Oscillator
Min
Max
Min
0.0
440
485
2.0t
CLCL
500
2.0t
485
2.0t
CLCL
4 MHz Oscillator
Min
Max
Min
0.0
690
735
3.0t
CLCL
750
3.0t
735
3.0t
CLCL
4 MHz Oscillator
Min
Max
Min
0.0
690
735
3.0t
CLCL
485
2.0t
CLCL
750
3.0t
735
3.0t
CLCL
Variable Oscillator
Max
Unit
-15
ns
(1)
-20
ns
-15
ns
ns
CLCL
-15
ns
Variable Oscillator
Max
Unit
8
MHz
2.0t
-60
ns
CLCL
-15
ns
ns
CLCL
-15
ns
Variable Oscillator
Max
Unit
8
MHz
3.0t
-60
ns
CLCL
-15
ns
ns
CLCL
-15
ns
Variable Oscillator
Max
Unit
8
MHz
3.0t
-60
ns
CLCL
-15
ns
-15
ns
ns
CLCL
-15
ns
2512J–AVR–10/06