AK6420A-1 Datasheet, PDF (11/15 Pages) Asahi Kasei Microsystems – 2K / 4K / 8Kbit Serial CMOS EEPROM

ASAHI KASEI
[AK6420A/40A/80A]
(2) A.C. ELECTRICAL CHARACTERISTICS
( 1.8V≤Vcc≤5.5V, -40°C≤Ta≤85°C, unless otherwise specified )
Parameter
Symbol
Condition
SK Cycle Time
tSKP1 2.5V≤VCC≤5.5V
tSKP2 1.8V≤VCC<2.5V
SK Pulse Width
tSKW1 2.5V≤VCC≤5.5V
tSKW2 1.8V≤VCC<2.5V
SK High Pulse Width tSKH1 4.5V≤VCC≤5.5V
tSKH2 2.5V≤VCC<4.5V
*3 _{tSKH3 1.8V≤VCC<2.5V}
CS Setup Time
tCSS
CS Hold Time
tCSH
SK Setup Time
tSKSH
/tSKSL
RESET Setup Time
tRESS
RESET Hold Time
tRESH
Data Setup Time
tDIS1 4.5V≤VCC≤5.5V
tDIS2 1.8V≤VCC<4.5V
Data Hold Time
tDIH1 4.5V≤VCC≤5.5V
tDIH2 1.8V≤VCC<4.5V
DO pin
tPD1 4.5V≤VCC≤5.5V, *4
Output delay
tPD2
tPD3
2.5V≤VCC<4.5V, *4
1.8V≤VCC<2.5V. *4
RDY/BUSY pin
tPD
CL=100pF
Min.
Max.
Unit
500
ns
1.5
us
250
ns
750
ns
250
ns
500
ns
750
ns
100
ns
100
ns
100
ns
0
ns
0
ns
100
ns
200
ns
100
ns
200
ns
150
ns
300
ns
500
ns
1
us
Output delay
Selftimed Programming tE/W
10
ms
Time
Write Recovery Time tRC
Min CS High Time
tCS
100
ns
250
ns
DO High-Z Time
tOZ
500
ns
*3: tSKH 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, tSKH are applied to the high
pulse width of 32nd and 48th (multiple of 16) SK pulse in READ operation.
*4: CL=100pF
DAS01E-00
- 11 -
1999/05