24AA256 Datasheet, PDF (2/12 Pages) Microchip Technology – 256K I 2 C CMOS Serial EEPROM

24AA256/24LC256
1.0 ELECTRICAL
CHARACTERISTICS
1.1 Maximum Ratings*
VCC.................................................................................................7.0V
All inputs and outputs w.r.t. VSS ............................. -0.6V to VCC +1.0V
Storage temperature ...................................................-65°C to +150°C
Ambient temp. with power applied...............................-65°C to +125°C
Soldering temperature of leads (10 seconds) ...........................+300°C
ESD protection on all pins .................................................................≥ 4 kV
*Notice: Stresses above those listed under “Maximum Ratings” may
cause permanent damage to the device. This is a stress rating only and
functional operation of the device at those or any other conditions
above those indicated in the operational listings of this specification is
not implied. Exposure to maximum rating conditions for extended peri-
ods may affect device reliability.
TABLE 1-2 DC CHARACTERISTICS
TABLE 1-1 PIN FUNCTION TABLE
Name
Function
A0, A1, A2 User Configurable Chip Selects
VSS Ground
SDA Serial Data
SCL Serial Clock
WP Write Protect Input
VCC +1.8 to 5.5V (24AA256)
+2.5 to 5.5V (24LC256)
All parameters apply across the
specified operating ranges unless
otherwise noted.
Industrial (I): VCC = +1.8V to 5.5V
Automotive (E): VCC = +4.5V to 5.5V
Tamb = -40°C to +85°C
Tamb = -40°C to 125°C
Parameter
Symbol
Min
Max
Units
Conditions
A0, A1, A2,
SCL, SDA, and WP pins:
High level input voltage
Low level input voltage
Hysteresis of Schmitt Trigger
inputs (SDA, SCL pins)
Low level output voltage
VIH
VIL
VHYS
VOL
0.7 VCC
—
0.05 VCC
—
0.3 VCC
0.2 VCC
—
—
0.40
Input leakage current
ILI
-10
10
Output leakage current
Pin capacitance
(all inputs/outputs)
Operating current
Standby current
ILO
-10
10
CIN, COUT
—
10
ICC Write
—
3
ICC Read
—
400
ICCS
—
1
Note: This parameter is periodically sampled and not 100% tested.
V
V Vcc ≥ 2.5V
V Vcc < 2.5V
V VCC ≥ 2.5V (Note)
V IOL = 3.0 mA @ VCC = 4.5V
IOL = 2.1 mA @ VCC = 2.5V
µA VIN = VSS or VCC, WP = VSS
VIN = VSS or VCC, WP = VCC
µA VOUT = VSS or VCC
pF VCC = 5.0V (Note)
Tamb = 25˚C, f_c= 1 MHz
mA VCC = 5.5V
µA VCC = 5.5V, SCL = 400 kHz
µA SCL = SDA = VCC = 5.5V
A0, A1, A2, WP = VSS
FIGURE 1-1: BUS TIMING DATA
TF
SCL
SDA
IN
TSU:STA
THD:STA
TSP
TLOW
SDA
OUT
THIGH
THD:DAT
TAA
VHYS
TR
TSU:DAT
TSU:STO
TBUF
WP
(protected)
TSU:WP
THD:WP
(unprotected)
DS21203C-page 2
© 1998 Microchip Technology Inc.