AK9844 Datasheet, PDF (13/17 Pages) Asahi Kasei Microsystems – 4Kbit EEPROM with 4ch 8bit D/A Converter

ASAHI KASEI
[AK9844]
„ AC Characteristics
1)EEPROM section
(VCC=+2.2V∼5.5V, GND=0V, Ta=-20∼70°C unless otherwise specified)
Parameter
Symbol Condition
min
typ
max Unit
SK cycle1
tSKP1
(Note4)
1.0
us
SK pulse width1
"L" tSWL1
400
ns
"H" tSWH1 (Note4)
400
ns
SK cycle2
tSKP2
(Note5)
4.0
us
SK pulse width2
"L" tSWL2
1
us
"H" tSWH2 (Note5)
1
us
CS Setup Time
tCSS
100
ns
CS Hold Time
tCSH
(Note6)
100
ns
SK Setup time
tSKS
100
ns
Data Setup Time
tDIS
200
ns
Data Hold Time
tDIH
200
ns
Data Output Delay
tPD
CL=100pF
300
ns
Selftimed Program Time
tE/W
15
ms
Write Recovery Time
tRC
100
ns
Min CS High Time
tCS
1.0
us
Do High-Z Time
tOZ
500
ns
Note4. 4.5V≤VCC≤5.5V
Note5. 2.2V≤VCC<4.5V
Note6. In case that the data of the DAC section is not changed and the output of the DAC is changed,
tCSH is min.1us.
DAD02E-00
- 13 -
1999/05