S-93C46B_1 Datasheet, PDF (9/50 Pages) Seiko Instruments Inc – 3-WIRE SERIAL E2PROM

Rev.7.0_00
„ AC Electrical Characteristics
3-WIRE SERIAL E²PROM
S-93C46B/56B/66B
Table 18 Measurement Conditions
Input pulse voltage
Output reference voltage
Output load
0.1 × V_CC to 0.9 × V_CC
0.5 × V_CC
100 pF
Table 19
(Ta = −40 to +85°C unless otherwise specified)
Item
Symbol
V_CC = 4.5 to 5.5 V V_CC = 2.5 to 4.5 V V_CC = 1.8 to 2.5 V _Unit
Min. Max. Min. Max. Min. Max.
CS setup time
t_CSS
0.2
⎯
0.4
⎯
1.0
⎯
μs
CS hold time
t_CSH
0
⎯
0
⎯
0
⎯
μs
CS deselect time
t_CDS
0.2
⎯
0.2
⎯
0.4
⎯
μs
Data setup time
t_DS
0.1
⎯
0.2
⎯
0.4
⎯
μs
Data hold time
t_DH
0.1
⎯
0.2
⎯
0.4
⎯
μs
Output delay time
t_PD
⎯
0.4
⎯
0.8
⎯
2.0
μs
Clock frequency^*1
f_SK
0
2.0
0
0.5
0
0.25 MHz
SK clock time “L” ^*1
t_SKL
0.1
⎯
0.5
⎯
1.0
⎯
μs
SK clock time “H” ^*1
t_SKH
0.1
⎯
0.5
⎯
1.0
⎯
μs
Output disable time
t_HZ1, t_HZ2
0
0.15
0
0.5
0
1.0
μs
Output enable time
t_SV
0
0.15
0
0.5
0
1.0
μs
*1. The clock cycle of the SK clock (frequency: f_SK) is 1/f_SK μs. This clock cycle is determined by a
combination of several AC characteristics, so be aware that even if the SK clock cycle time is minimized,
the clock cycle (1/f_SK) cannot be made equal to t_SKL(Min.) + t_SKH(Min.).
Item
Write time
Table 20
Symbol
Min.
t_PR
⎯
(Ta = −40 to +85°C unless otherwise specified)
V_CC = 2.7 to 5.5 V
Unit
Typ.
Max.
4.0
8.0
ms
Seiko Instruments Inc.
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