93LC66 Datasheet, PDF (3/20 Pages) Microchip Technology – 1K/2K/4K 2.5V Microwire Serial EEPROM

93LC46/56/66
AC CHARACTERISTICS
AC CHARACTERISTICS
VCC = +2.5V to +5.5V
Industrial (I): TA = -40°C to +85°C
Param.
No.
Sym
Characteristic
Min
Typ Max Units
Conditions
1
FCLK
Clock frequency
2
TCKH
Clock high time
—
—
2
MHz VCC ≥ 4.5V
—
—
1
MHz VCC < 4.5V
250
—
—
ns
3
TCKL
Clock low time
250
—
—
ns
4
TCSS
Chip select setup time
50
—
—
ns Relative to CLK
5
TCSH
Chip select hold time
0
—
—
ns Relative to CLK
6
TCSL
Chip select low time
250
—
—
ns
7
TDIS
Data input setup time
100
—
—
ns Relative to CLK
8
TDIH
Data input hold time
100
—
—
ns Relative to CLK
9
TPD
Data output delay time
—
—
400
ns CL = 100 pF
10
TCZ
Data output disable time
—
—
100
ns CL = 100 pf (Note 2)
11
TSV
Status valid time
—
—
500
ns CL = 100 pF
12
TWC
Program cycle time
—
4
10
ms Erase/Write mode
13
TEC
—
8
15
ms ERAL mode (VCC=5V ±10%)
14
TWL
15
—
Endurance
—
16
30
ms WRAL mode (VCC=5V ±10%)
1M
—
1M cycles 25°C, VCC = 5.0V, Block
mode (Note 3)
Note 1:
2:
3:
This parameter is tested at TA = 25°C and FCLK = 1 MHz.
This parameter is periodically sampled and not 100% tested.
This parameter is not tested but ensured by characterization. For endurance estimates in a specific
application, please consult the Total Endurance^™ Model which can be obtained from Microchip’s web site
at: www.microchip.com.
FIGURE 1-1:
SYNCHRONOUS DATA TIMING
CS ^VIH
VIL
VIH
CLK
VIL
VIH
DI
VIL
DO ^VOH
(Read) _VOL
DO ^VOH
(Write)
VOL
4
2
7
8
9
11
3
9
Status Valid
5
10
10
 2004 Microchip Technology Inc.
DS21712B-page 3