ASAHI KASEI
[AK6420B/40B/80B]
(2) A.C. ELECTRICAL CHARACTERISTICS
( 1.8V≤Vcc≤5.5V, -40°C≤Ta≤85°C, unless otherwise specified )
Parameter
SK Cycle Time
Symbol
Condition
Min.
Max.
Unit
500
ns
tSKP1 2.5V
≤
VCC
≤
5.5V
tSKP2 1.8V
≤
VCC<2.5V
1.5
us
SK Pulse Width
tSKW1 2.5V
≤
VCC
≤
5.5V
250
ns
tSKW2 1.8V
≤
VCC<2.5V
750
ns
SK High Pulse Width
tSKH1 4.5V
≤
VCC
≤
5.5V
250
ns
500
ns
tSKH2 2.5V
≤
VCC<4.5V
*3 tSKH3 1.8V
≤
VCC<2.5V
750
ns
CS Setup Time
tCSS
100
ns
CS Hold Time
tCSH
100
ns
SK Setup Time
tSKSH
100
ns
/tSKSL
RESET Setup Time
tRESS
0
ns
4.5V
≤
VCC
≤
5.5V
100
ns
Data Setup Time
tDIS1
1.8V
≤
VCC<4.5V
tDIS2
200
ns
4.5V
≤
VCC
≤
5.5V
Data Hold Time
tDIH1
100
ns
1.8V
≤
VCC<4.5V
tDIH2
200
ns
4.5V
≤
VCC
≤
5.5V, *4
DO pin
tPD1
150
ns
Output delay
2.5V
≤
VCC<4.5V, *4
300
ns
tPD2
1.8V
≤
VCC<2.5V. *4
tPD3
500
ns
Selftimed Programming tE/W
10
ms
Time
Min CS High Time
tCS
250
ns
DO High-Z Time
tOZ
500
ns
*3: t
SKH
is the high pulse width of 16th
SK
pulse in READ operation. When the data in the
next address are read sequentially by continuing to provide clock, t
SKH
are applied to
the high pulse width of 32nd and 48th (multiple of 16)
SK
pulse in READ operation.
*4: CL=100pF
DAS03E-00
- 11 -
1999/05
AKM [ ASAHI KASEI MICROSYSTEMS ]
