Datasheet

© 2009 Microchip Technology Inc. DS22184A-page 3
24AA32AF/24LC32AF
TABLE 1-2: AC CHARACTERISTICS
AC CHARACTERISTICS
Electrical Characteristics:
Industrial (I): VCC = +1.7V to 5.5V TA = -40°C to +85°C
Automotive (E): V
CC = +2.5V to 5.5V TA = -40°C to 125°C
Param.
No.
Sym. Characteristic Min. Max. Units Conditions
1F
CLK Clock frequency —
—
100
400
kHz 1.7V ≤ VCC < 2.5V
2.5V ≤ V
CC ≤ 5.5V
2THIGH Clock high time 4000
600
—
—
ns 1.7V ≤ VCC < 2.5V
2.5V ≤ V
CC ≤ 5.5V
3TLOW Clock low time 4700
1300
—
—
ns 1.7V ≤ VCC < 2.5V
2.5V ≤ V
CC ≤ 5.5V
4T
R SDA and SCL rise time
(Note 1)
—
—
1000
300
ns 1.7V ≤ VCC < 2.5V
2.5V ≤ V
CC ≤ 5.5V
5TF SDA and SCL fall time
(Note 1)
—300ns
6T
HD:STA Start condition hold time 4000
600
—
—
ns 1.7V ≤ VCC < 2.5V
2.5V ≤ V
CC ≤ 5.5V
7T
SU:STA Start condition setup time 4700
600
—
—
ns 1.7V ≤ VCC < 2.5V
2.5V ≤ V
CC ≤ 5.5V
8THD:DAT Data input hold time 0 — ns (Note 2)
9T
SU:DAT Data input setup time 250
100
—
—
ns 1.7V ≤ VCC < 2.5V
2.5V ≤ V
CC ≤ 5.5V
10 TSU:STO Stop condition setup time 4000
600
—
—
ns 1.7 V ≤ VCC < 2.5V
2.5 V ≤ V
CC ≤ 5.5V
11 TSU:WP WP setup time 4000
600
—
—
ns 1.7V ≤ VCC < 2.5V
2.5V ≤ V
CC ≤ 5.5V
12 T
HD:WP WP hold time 4700
1300
—
—
ns 1.7V ≤ VCC < 2.5V
2.5V ≤ V
CC ≤ 5.5V
13 TAA Output valid from clock
(Note 2)
—
—
3500
900
ns 1.7V ≤ VCC < 2.5V
2.5V ≤ V
CC ≤ 5.5V
14 TBUF Bus free time: Time the bus
must be free before a new
transmission can start
4700
1300
—
—
ns 1.7V ≤ VCC < 2.5V
2.5V ≤ V
CC ≤ 5.5V
15 T
OF Output fall time from VIH
minimum to V
IL maximum
C
B ≤ 100 pF
10 +
0.1C
B
250 ns (Note 1)
16 TSP Input filter spike suppression
(SDA and SCL pins)
—50ns(Notes 1 and 3)
17 T
WC Write cycle time (byte or
page)
—5ms—
18 — Endurance 1,000,000 — cycles 25°C (Note 4)
Note 1: Not 100% tested. C
B = total capacitance of one bus line in pF.
2: As a transmitter, the device must provide an internal minimum delay time to bridge the undefined region
(minimum 300 ns) of the falling edge of SCL to avoid unintended generation of Start or Stop conditions.
3: The combined T
SP and VHYS specifications are due to new Schmitt Trigger inputs, which provide improved
noise spike suppression. This eliminates the need for a T
I specification for standard operation.
4: 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.