AT93C46E 데이터 시트보기 (PDF) - Atmel Corporation
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AT93C46E Datasheet PDF : 15 Pages
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Table 2-4. AC Characteristics
Applicable over recommended operating range from TA = −40°C to + 85°C, VCC = +2.7V to + 5.5V,
CL = 1 TTL Gate and 100 pF (unless otherwise noted)
Symbol
Parameter
Test Condition
Min
Typ
Max
4.5V ≤ VCC ≤ 5.5V
fSK
SK Clock Frequency
2.7V ≤ VCC ≤ 5.5V
1.8V ≤ VCC ≤ 5.5V
0
2
0
1
0
0.25
tSKH
SK High Time
4.5V ≤ VCC ≤ 5.5V
2.7V ≤ VCC ≤ 5.5V
1.8V ≤ VCC ≤ 5.5V
250
250
1000
tSKL
SK Low Time
4.5V ≤ VCC ≤ 5.5V
2.7V ≤ VCC ≤ 5.5V
1.8V ≤ VCC ≤ 5.5V
250
250
1000
4.5V ≤ VCC ≤ 5.5V
tCS
Minimum CS Low Time
2.7V ≤ VCC ≤ 5.5V
1.8V ≤ VCC ≤ 5.5V
250
250
1000
tCSS
CS Setup Time
4.5V ≤ VCC ≤ 5.5V
50
Relative to SK
2.7V ≤ VCC ≤ 5.5V
50
1.8V ≤ VCC ≤ 5.5V
200
tDIS
DI Setup Time
4.5V ≤ VCC ≤ 5.5V
100
Relative to SK
2.7V ≤ VCC ≤ 5.5V
100
1.8V ≤ VCC ≤ 5.5V
400
tCSH
CS Hold Time
Relative to SK
0
tDIH
DI Hold Time
4.5V ≤ VCC ≤ 5.5V
100
Relative to SK
2.7V ≤ VCC ≤ 5.5V
100
1.8V ≤ VCC ≤ 5.5V
400
4.5V ≤ VCC ≤ 5.5V
tPD1
Output Delay to “1”
AC Test
2.7V ≤ VCC ≤ 5.5V
1.8V ≤ VCC ≤ 5.5V
250
250
1000
4.5V ≤ VCC ≤ 5.5V
tPD0
Output Delay to “0”
AC Test
2.7V ≤ VCC ≤ 5.5V
1.8V ≤ VCC ≤ 5.5V
250
250
1000
4.5V ≤ VCC ≤ 5.5V
tSV
CS to Status Valid
AC Test
2.7V ≤ VCC ≤ 5.5V
1.8V ≤ VCC ≤ 5.5V
250
250
1000
tDF
CS to DO in High
Impedance
AC Test
CS = VIL
4.5V ≤ VCC ≤ 5.5V
2.7V ≤ VCC ≤ 5.5V
1.8V ≤ VCC ≤ 5.5V
100
150
400
tWP
Endurance(1)
Write Cycle Time
5.0V, 25°C
0.1
3
5
1M
Note: 1. This parameter is ensured by characterization.
Units
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ms
Write Cycle
3. Functional Description
The AT93C46E is accessed via a simple and versatile three-wire serial communication inter-
face. Device operation is controlled by seven instructions issued by the host processor. A valid
instruction starts with a rising edge of CS and consists of a start bit (logic “1”) followed by the
appropriate op code and the desired memory address location.
4 AT93C46E
5207D–SEEPR–1/08
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