S-24C128C Datasheet, PDF (6/35 Pages) Seiko Instruments Inc – Write protect function during the low power supply voltage

2-WIRE SERIAL E²PROM
S-24C128C
Rev.4.0_02_H
 AC Electrical Characteristics
Table 11 Measurement Conditions
Input pulse voltage
Input pulse rising / falling time
Output reference voltage
Output load
0.2 × VCC to 0.8 × VCC
20 ns or less
0.3 × VCC to 0.7 × VCC
100 pF
Item
SCL clock frequency
SCL clock time “L”
SCL clock time “H”
SDA output delay time
SDA output hold time
Start condition setup time
Start condition hold time
Data input setup time
Data input hold time
Stop condition setup time
SCL, SDA rising time
SCL, SDA falling time
WP setup time
WP hold time
WP release setup time
WP release hold time
Bus release time
Noise suppression time
Table 12
Symbol
fSCL
tLOW
tHIGH
tAA
tDH
tSU.STA
tHD.STA
tSU.DAT
tHD.DAT
tSU.STO
tR
tF
tWS1
tWH1
tWS2
tWH2
tBUF
tI
Input pulse voltage
0.8 × V_CC
Output reference voltage
0.7 × V_CC
0.2 × V_CC
0.3 × V_CC
Figure 4 I/O Waveform during AC Measurement
Ta = −40°C to +85°C
VCC = 1.6 V to 5.5 V
Unit
Min.
Max.
0
400
kHz
1.3
−
μs
0.6
−
μs
0.1
0.9
μs
50
−
ns
0.6
−
μs
0.6
−
μs
100
−
ns
0
−
ns
0.6
−
μs
−
0.3
μs
−
0.3
μs
0
−
μs
0
−
μs
0
−
μs
0
−
μs
1.3
−
μs
−
50
ns
t_F
t_HIGH
t_LOW
t_R
SCL
t_SU.STA
t_HD.STA
t_HD.DAT
t_SU.DAT
t_SU.STO
SDA
(input)
t_AA
t_DH
t_BUF
SDA
(output)
Figure 5 Bus Timing
6