S7760A Datasheet, PDF (9/54 Pages) Seiko Instruments Inc – PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)

PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E²PROM CIRCUIT)
Rev.2.0_01
S-7760A
 AC Electrical Characteristics
Table 9 Measurement Conditions
Input pulse voltage
Rising/falling time of input pulse
Output reference voltage
Output load
VIL = 0.1 × VCCH, VIH = 0.9 × VCCH
20 ns
0.5 × VCCH
100 pF+ Pull-up resistor 1.0 kΩ
SDA
V_CCH
R=1.0 kΩ
C=100 pF
SCL
SDA IN
SDA OUT
Figure 10 Output Load Circuit
Table 10 AC Electrical Characteristics
Item
Symbol
VCCH = 2.3 to 4.5 V
Min.
Typ.
Max.
Unit
SCL clock frequency ^*1
fSCL
0
−
400
kHz
SCL clock time “L” ^*1
tLOW
1.3
−
−
μs
SCL clock time “H” ^*1
tHIGH
0.6
−
−
μs
SDA output delay time ^*1
tAA
−
−
0.9
μs
SDA output hold time ^*1
tDH
50
−
−
ns
Start condition setup time ^*1
tSU.STA
0.6
−
−
μs
Start condition hold time ^*1
tHD.STA
0.6
−
−
μs
Data input setup time ^*1
tSU.DAT
100
−
−
ns
Data input hold time ^*1
tHD.DAT
0
−
−
ns
Stop condition setup time ^*1
tSU.STO
0.6
−
−
μs
SCL, SDA rise time ^*1
tR
−
−
0.3
μs
SCL, SDA fall time ^*1
tF
−
−
0.3
μs
Bus release time ^*1
tBUF
1.3
−
−
μs
Noise suppression time ^*1
tI
−
−
50
ns
Frequency for external
oscillation input ^*2
fTEX
−
−
400
kHz
*1. The timing is defined by 10% and 90% of the waveform.
*2. When selecting the option for external oscillation input.
t_F
t_HIGH
t_LOW
t_R
t_SU.STA
t_HD.STA
t_HD.DAT
t_SU.DAT
t_AA
t_DH
Figure 11 Bus Timing
t_SU.STO
t_BUF
9