X76F640 Datasheet, PDF (12/17 Pages) Xicor Inc. – Secure SerialFlash

X76F640
RESET AC SPECIFICATIONS
Power Up Timing
Symbol
Parameter
Min.
Typ⁽²⁾
Max.
Units
t_PUR ⁽¹⁾
Time from Power Up to Read
1
mS
t_PUW ⁽¹⁾
Time from Power Up to Write
5
mS
7025 FM T11
Notes:1.
2.
Delays are measured from the time VCC is stable until the specified operation can be initiated. These parameters are periodically sampled and not
100% tested.
Typical values are for TA = 25˚C and VCC = 5.0V
Nonvolatile Write Cycle Timing
Symbol
Parameter
Min.
Typ.(1)
Max.
Units
t_WC ⁽¹⁾
Write Cycle Time
5
10
mS
7025 FM T12
Notes:1. _{tWC is the time from a valid stop condition at the end of a write sequence to the end of the self-timed internal nonvolatile write cycle. It is the}
minimum cycle time to be allowed for any nonvolatile write by the user, unless Acknowledge Polling is used.
TIMING DIAGRAMS
Bus Timing
t_R
t_F
t_HIGH
t_LOW
SCL
tSU:STA
SDA IN
SDA OUT
tHD:STA
tSU:DAT
tHD:DAT
t_AA t_DH
tSU:STO
t_BUF
7025 FM 18
Write Cycle Timing
SCL
SDA
8th bit of last byte
ACK
t_WC
Stop
Condition
Start
Condition
7025 FM 19
12