S-25C256A Datasheet, PDF (7/31 Pages) Seiko Instruments Inc – Write protect function during the low power supply voltage

Rev.2.2_02_S
SPI SERIAL E²PROM
S-25C256A
CS
SCK
SI
SO
Item
Write time
Table 13
Ta = −40°C to +85°C
Symbol
VCC = 1.7 V to 5.5 V
Min.
Max.
tPR
−
5.0
Unit
ms
tCDS
tCSH.CL
tCSS.CL
tCSH.CH
tCSS.CH
tDS
tDH
MSB IN
tRSK
tFSK
LSB IN
High-Z
Figure 4 Serial Input Timing
CS
SCK
SI
SO
tSKS.HL
tSKH.HL
tOZ.HL
tSKH.HH
tSKS.HH
tOD.HH
HOLD
Figure 5 Hold Timing
7